/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 19:11:40,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 19:11:40,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 19:11:40,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 19:11:40,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 19:11:40,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 19:11:40,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 19:11:40,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 19:11:40,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 19:11:40,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 19:11:40,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 19:11:40,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 19:11:40,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 19:11:40,839 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 19:11:40,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 19:11:40,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 19:11:40,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 19:11:40,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 19:11:40,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 19:11:40,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 19:11:40,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:11:40,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 19:11:40,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 19:11:40,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 19:11:40,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 19:11:41,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 19:11:41,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 19:11:41,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 19:11:41,047 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 19:11:41,049 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 19:11:41,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl [2022-03-03 19:11:41,050 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl' [2022-03-03 19:11:41,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 19:11:41,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 19:11:41,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 19:11:41,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 19:11:41,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 19:11:41,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,099 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 19:11:41,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 19:11:41,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 19:11:41,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 19:11:41,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 19:11:41,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 19:11:41,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 19:11:41,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 19:11:41,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 19:11:41,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/1) ... [2022-03-03 19:11:41,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:11:41,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:11:41,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 19:11:41,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 19:11:41,174 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 19:11:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 19:11:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 19:11:41,175 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 19:11:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 19:11:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 19:11:41,175 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 19:11:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 19:11:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 19:11:41,175 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-03 19:11:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 19:11:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 19:11:41,176 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 19:11:41,215 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 19:11:41,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 19:11:41,318 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 19:11:41,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 19:11:41,360 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 19:11:41,361 INFO L202 PluginConnector]: Adding new model word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:11:41 BoogieIcfgContainer [2022-03-03 19:11:41,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 19:11:41,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 19:11:41,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 19:11:41,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 19:11:41,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:41" (1/2) ... [2022-03-03 19:11:41,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bbd8b8 and model type word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:11:41, skipping insertion in model container [2022-03-03 19:11:41,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:11:41" (2/2) ... [2022-03-03 19:11:41,367 INFO L111 eAbstractionObserver]: Analyzing ICFG word-subst.wvr.bpl [2022-03-03 19:11:41,370 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 19:11:41,370 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 19:11:41,370 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 19:11:41,370 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 19:11:41,407 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-03 19:11:41,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 19:11:41,471 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 19:11:41,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-03 19:11:41,479 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2022-03-03 19:11:41,519 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:41,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:41,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:41,535 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash -175708281, now seen corresponding path program 1 times [2022-03-03 19:11:41,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:41,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412099628] [2022-03-03 19:11:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:41,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:41,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412099628] [2022-03-03 19:11:41,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412099628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:41,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:41,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:41,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024026993] [2022-03-03 19:11:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:41,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:41,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:41,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:41,804 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:41,930 INFO L93 Difference]: Finished difference Result 171 states and 561 transitions. [2022-03-03 19:11:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 19:11:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-03 19:11:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:41,939 INFO L225 Difference]: With dead ends: 171 [2022-03-03 19:11:41,939 INFO L226 Difference]: Without dead ends: 108 [2022-03-03 19:11:41,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:41,942 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:41,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-03 19:11:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-03 19:11:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 3.2990654205607477) internal successors, (353), 107 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 353 transitions. [2022-03-03 19:11:41,974 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 353 transitions. Word has length 14 [2022-03-03 19:11:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:41,974 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 353 transitions. [2022-03-03 19:11:41,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 353 transitions. [2022-03-03 19:11:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:41,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:41,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:41,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 19:11:41,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 352207545, now seen corresponding path program 1 times [2022-03-03 19:11:41,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:41,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495143124] [2022-03-03 19:11:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:42,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:42,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495143124] [2022-03-03 19:11:42,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495143124] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:42,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:42,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:42,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418563790] [2022-03-03 19:11:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:42,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:42,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:42,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:42,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:42,061 INFO L87 Difference]: Start difference. First operand 108 states and 353 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:42,168 INFO L93 Difference]: Finished difference Result 172 states and 504 transitions. [2022-03-03 19:11:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:42,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:11:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:42,170 INFO L225 Difference]: With dead ends: 172 [2022-03-03 19:11:42,170 INFO L226 Difference]: Without dead ends: 153 [2022-03-03 19:11:42,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:11:42,171 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:42,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-03-03 19:11:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2022-03-03 19:11:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 3.19672131147541) internal successors, (390), 122 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 390 transitions. [2022-03-03 19:11:42,183 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 390 transitions. Word has length 15 [2022-03-03 19:11:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:42,184 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 390 transitions. [2022-03-03 19:11:42,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 390 transitions. [2022-03-03 19:11:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:42,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:42,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:42,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 19:11:42,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash 129707517, now seen corresponding path program 2 times [2022-03-03 19:11:42,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:42,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671644306] [2022-03-03 19:11:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:42,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:42,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671644306] [2022-03-03 19:11:42,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671644306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:42,284 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:42,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:42,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873464006] [2022-03-03 19:11:42,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:42,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:42,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:42,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:42,286 INFO L87 Difference]: Start difference. First operand 123 states and 390 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:42,407 INFO L93 Difference]: Finished difference Result 179 states and 520 transitions. [2022-03-03 19:11:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:42,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:11:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:42,409 INFO L225 Difference]: With dead ends: 179 [2022-03-03 19:11:42,409 INFO L226 Difference]: Without dead ends: 160 [2022-03-03 19:11:42,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:11:42,411 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:42,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 26 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-03-03 19:11:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2022-03-03 19:11:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 3.1538461538461537) internal successors, (410), 130 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 410 transitions. [2022-03-03 19:11:42,419 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 410 transitions. Word has length 15 [2022-03-03 19:11:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:42,420 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 410 transitions. [2022-03-03 19:11:42,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 410 transitions. [2022-03-03 19:11:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:42,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:42,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:42,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 19:11:42,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1336190699, now seen corresponding path program 3 times [2022-03-03 19:11:42,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:42,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027832315] [2022-03-03 19:11:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:42,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:42,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027832315] [2022-03-03 19:11:42,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027832315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:42,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:42,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:42,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347448542] [2022-03-03 19:11:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:42,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:42,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:42,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:42,517 INFO L87 Difference]: Start difference. First operand 131 states and 410 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:42,647 INFO L93 Difference]: Finished difference Result 235 states and 657 transitions. [2022-03-03 19:11:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:42,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:11:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:42,650 INFO L225 Difference]: With dead ends: 235 [2022-03-03 19:11:42,650 INFO L226 Difference]: Without dead ends: 216 [2022-03-03 19:11:42,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:11:42,658 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:42,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-03-03 19:11:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 135. [2022-03-03 19:11:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 3.1492537313432836) internal successors, (422), 134 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 422 transitions. [2022-03-03 19:11:42,674 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 422 transitions. Word has length 15 [2022-03-03 19:11:42,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:42,674 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 422 transitions. [2022-03-03 19:11:42,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 422 transitions. [2022-03-03 19:11:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:42,675 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:42,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:42,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 19:11:42,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1816909085, now seen corresponding path program 4 times [2022-03-03 19:11:42,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:42,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033167126] [2022-03-03 19:11:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:42,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:42,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:42,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033167126] [2022-03-03 19:11:42,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033167126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:42,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:42,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:42,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718111214] [2022-03-03 19:11:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:42,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:42,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:42,782 INFO L87 Difference]: Start difference. First operand 135 states and 422 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:42,873 INFO L93 Difference]: Finished difference Result 194 states and 550 transitions. [2022-03-03 19:11:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:42,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:11:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:42,874 INFO L225 Difference]: With dead ends: 194 [2022-03-03 19:11:42,874 INFO L226 Difference]: Without dead ends: 171 [2022-03-03 19:11:42,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:11:42,875 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:42,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 27 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-03-03 19:11:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 135. [2022-03-03 19:11:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 3.1343283582089554) internal successors, (420), 134 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 420 transitions. [2022-03-03 19:11:42,881 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 420 transitions. Word has length 15 [2022-03-03 19:11:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:42,881 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 420 transitions. [2022-03-03 19:11:42,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 420 transitions. [2022-03-03 19:11:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:42,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:42,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:42,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 19:11:42,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -99509597, now seen corresponding path program 5 times [2022-03-03 19:11:42,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:42,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915925922] [2022-03-03 19:11:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:42,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:42,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915925922] [2022-03-03 19:11:42,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915925922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:42,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:42,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:42,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422302178] [2022-03-03 19:11:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:42,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:42,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:42,952 INFO L87 Difference]: Start difference. First operand 135 states and 420 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,054 INFO L93 Difference]: Finished difference Result 228 states and 638 transitions. [2022-03-03 19:11:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:43,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:11:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,055 INFO L225 Difference]: With dead ends: 228 [2022-03-03 19:11:43,055 INFO L226 Difference]: Without dead ends: 209 [2022-03-03 19:11:43,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:11:43,056 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-03-03 19:11:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 137. [2022-03-03 19:11:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 3.139705882352941) internal successors, (427), 136 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 427 transitions. [2022-03-03 19:11:43,062 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 427 transitions. Word has length 15 [2022-03-03 19:11:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,062 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 427 transitions. [2022-03-03 19:11:43,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 427 transitions. [2022-03-03 19:11:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:43,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 19:11:43,063 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash 952554009, now seen corresponding path program 6 times [2022-03-03 19:11:43,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120138708] [2022-03-03 19:11:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120138708] [2022-03-03 19:11:43,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120138708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:43,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039125646] [2022-03-03 19:11:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:43,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:43,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,155 INFO L87 Difference]: Start difference. First operand 137 states and 427 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,219 INFO L93 Difference]: Finished difference Result 195 states and 552 transitions. [2022-03-03 19:11:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 19:11:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,221 INFO L225 Difference]: With dead ends: 195 [2022-03-03 19:11:43,221 INFO L226 Difference]: Without dead ends: 172 [2022-03-03 19:11:43,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:11:43,221 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-03-03 19:11:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2022-03-03 19:11:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 3.125) internal successors, (425), 136 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 425 transitions. [2022-03-03 19:11:43,226 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 425 transitions. Word has length 15 [2022-03-03 19:11:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,226 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 425 transitions. [2022-03-03 19:11:43,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 425 transitions. [2022-03-03 19:11:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 19:11:43,227 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1936277242, now seen corresponding path program 1 times [2022-03-03 19:11:43,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496327318] [2022-03-03 19:11:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496327318] [2022-03-03 19:11:43,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496327318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326284350] [2022-03-03 19:11:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,262 INFO L87 Difference]: Start difference. First operand 137 states and 425 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,301 INFO L93 Difference]: Finished difference Result 196 states and 557 transitions. [2022-03-03 19:11:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:43,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,302 INFO L225 Difference]: With dead ends: 196 [2022-03-03 19:11:43,302 INFO L226 Difference]: Without dead ends: 173 [2022-03-03 19:11:43,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,303 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-03-03 19:11:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 129. [2022-03-03 19:11:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 3.0625) internal successors, (392), 128 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 392 transitions. [2022-03-03 19:11:43,307 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 392 transitions. Word has length 16 [2022-03-03 19:11:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,307 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 392 transitions. [2022-03-03 19:11:43,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 392 transitions. [2022-03-03 19:11:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 19:11:43,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2117348120, now seen corresponding path program 1 times [2022-03-03 19:11:43,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381739898] [2022-03-03 19:11:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381739898] [2022-03-03 19:11:43,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381739898] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994889708] [2022-03-03 19:11:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,334 INFO L87 Difference]: Start difference. First operand 129 states and 392 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,377 INFO L93 Difference]: Finished difference Result 195 states and 553 transitions. [2022-03-03 19:11:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:43,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,378 INFO L225 Difference]: With dead ends: 195 [2022-03-03 19:11:43,379 INFO L226 Difference]: Without dead ends: 195 [2022-03-03 19:11:43,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,379 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-03-03 19:11:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 136. [2022-03-03 19:11:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.022222222222222) internal successors, (408), 135 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 408 transitions. [2022-03-03 19:11:43,383 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 408 transitions. Word has length 16 [2022-03-03 19:11:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,383 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 408 transitions. [2022-03-03 19:11:43,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 408 transitions. [2022-03-03 19:11:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,384 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 19:11:43,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1557952042, now seen corresponding path program 2 times [2022-03-03 19:11:43,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682101673] [2022-03-03 19:11:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682101673] [2022-03-03 19:11:43,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682101673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62168788] [2022-03-03 19:11:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,414 INFO L87 Difference]: Start difference. First operand 136 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,454 INFO L93 Difference]: Finished difference Result 230 states and 629 transitions. [2022-03-03 19:11:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,455 INFO L225 Difference]: With dead ends: 230 [2022-03-03 19:11:43,455 INFO L226 Difference]: Without dead ends: 215 [2022-03-03 19:11:43,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,456 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-03-03 19:11:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 136. [2022-03-03 19:11:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.9925925925925925) internal successors, (404), 135 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 404 transitions. [2022-03-03 19:11:43,461 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 404 transitions. Word has length 16 [2022-03-03 19:11:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,461 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 404 transitions. [2022-03-03 19:11:43,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 404 transitions. [2022-03-03 19:11:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,462 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 19:11:43,463 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash 65237616, now seen corresponding path program 3 times [2022-03-03 19:11:43,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609381623] [2022-03-03 19:11:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609381623] [2022-03-03 19:11:43,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609381623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,494 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071589072] [2022-03-03 19:11:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,495 INFO L87 Difference]: Start difference. First operand 136 states and 404 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,528 INFO L93 Difference]: Finished difference Result 178 states and 497 transitions. [2022-03-03 19:11:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:11:43,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,529 INFO L225 Difference]: With dead ends: 178 [2022-03-03 19:11:43,529 INFO L226 Difference]: Without dead ends: 168 [2022-03-03 19:11:43,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,530 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 24 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-03-03 19:11:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 132. [2022-03-03 19:11:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.0229007633587788) internal successors, (396), 131 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 396 transitions. [2022-03-03 19:11:43,533 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 396 transitions. Word has length 16 [2022-03-03 19:11:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,534 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 396 transitions. [2022-03-03 19:11:43,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 396 transitions. [2022-03-03 19:11:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 19:11:43,535 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1404034676, now seen corresponding path program 2 times [2022-03-03 19:11:43,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810157510] [2022-03-03 19:11:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810157510] [2022-03-03 19:11:43,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810157510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,572 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028640487] [2022-03-03 19:11:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,573 INFO L87 Difference]: Start difference. First operand 132 states and 396 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,610 INFO L93 Difference]: Finished difference Result 156 states and 449 transitions. [2022-03-03 19:11:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,611 INFO L225 Difference]: With dead ends: 156 [2022-03-03 19:11:43,611 INFO L226 Difference]: Without dead ends: 156 [2022-03-03 19:11:43,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,611 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-03 19:11:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 110. [2022-03-03 19:11:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.9174311926605503) internal successors, (318), 109 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 318 transitions. [2022-03-03 19:11:43,615 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 318 transitions. Word has length 16 [2022-03-03 19:11:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,615 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 318 transitions. [2022-03-03 19:11:43,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 318 transitions. [2022-03-03 19:11:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 19:11:43,616 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -715157808, now seen corresponding path program 3 times [2022-03-03 19:11:43,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819853623] [2022-03-03 19:11:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819853623] [2022-03-03 19:11:43,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819853623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922077920] [2022-03-03 19:11:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,641 INFO L87 Difference]: Start difference. First operand 110 states and 318 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,671 INFO L93 Difference]: Finished difference Result 152 states and 411 transitions. [2022-03-03 19:11:43,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:11:43,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,672 INFO L225 Difference]: With dead ends: 152 [2022-03-03 19:11:43,672 INFO L226 Difference]: Without dead ends: 146 [2022-03-03 19:11:43,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,674 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-03-03 19:11:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2022-03-03 19:11:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.889908256880734) internal successors, (315), 109 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 315 transitions. [2022-03-03 19:11:43,677 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 315 transitions. Word has length 16 [2022-03-03 19:11:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,678 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 315 transitions. [2022-03-03 19:11:43,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 315 transitions. [2022-03-03 19:11:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 19:11:43,678 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1977207948, now seen corresponding path program 4 times [2022-03-03 19:11:43,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2869853] [2022-03-03 19:11:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2869853] [2022-03-03 19:11:43,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2869853] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569003976] [2022-03-03 19:11:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,697 INFO L87 Difference]: Start difference. First operand 110 states and 315 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,719 INFO L93 Difference]: Finished difference Result 116 states and 324 transitions. [2022-03-03 19:11:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:11:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,720 INFO L225 Difference]: With dead ends: 116 [2022-03-03 19:11:43,720 INFO L226 Difference]: Without dead ends: 108 [2022-03-03 19:11:43,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,721 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-03 19:11:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-03 19:11:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9065420560747666) internal successors, (311), 107 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 311 transitions. [2022-03-03 19:11:43,724 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 311 transitions. Word has length 16 [2022-03-03 19:11:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,725 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 311 transitions. [2022-03-03 19:11:43,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,725 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 311 transitions. [2022-03-03 19:11:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:43,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-03 19:11:43,725 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash 716372970, now seen corresponding path program 4 times [2022-03-03 19:11:43,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151190930] [2022-03-03 19:11:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151190930] [2022-03-03 19:11:43,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151190930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:43,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470512222] [2022-03-03 19:11:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:43,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:43,742 INFO L87 Difference]: Start difference. First operand 108 states and 311 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:43,768 INFO L93 Difference]: Finished difference Result 114 states and 320 transitions. [2022-03-03 19:11:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:11:43,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:11:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:43,769 INFO L225 Difference]: With dead ends: 114 [2022-03-03 19:11:43,769 INFO L226 Difference]: Without dead ends: 108 [2022-03-03 19:11:43,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:43,772 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:43,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 17 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-03 19:11:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-03 19:11:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.878504672897196) internal successors, (308), 107 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2022-03-03 19:11:43,774 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2022-03-03 19:11:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:43,774 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2022-03-03 19:11:43,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2022-03-03 19:11:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:43,775 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:43,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:43,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-03 19:11:43,776 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:43,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1183091529, now seen corresponding path program 1 times [2022-03-03 19:11:43,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:43,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857992432] [2022-03-03 19:11:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:43,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:43,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:43,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857992432] [2022-03-03 19:11:43,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857992432] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:43,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:43,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:43,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281064268] [2022-03-03 19:11:43,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:43,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:43,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:43,869 INFO L87 Difference]: Start difference. First operand 108 states and 308 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:44,045 INFO L93 Difference]: Finished difference Result 265 states and 721 transitions. [2022-03-03 19:11:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:44,046 INFO L225 Difference]: With dead ends: 265 [2022-03-03 19:11:44,047 INFO L226 Difference]: Without dead ends: 250 [2022-03-03 19:11:44,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:44,047 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:44,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 63 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-03-03 19:11:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 141. [2022-03-03 19:11:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.7928571428571427) internal successors, (391), 140 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 391 transitions. [2022-03-03 19:11:44,053 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 391 transitions. Word has length 17 [2022-03-03 19:11:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:44,053 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 391 transitions. [2022-03-03 19:11:44,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 391 transitions. [2022-03-03 19:11:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:44,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:44,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:44,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-03 19:11:44,055 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 922093723, now seen corresponding path program 2 times [2022-03-03 19:11:44,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:44,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610635417] [2022-03-03 19:11:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:44,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:44,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610635417] [2022-03-03 19:11:44,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610635417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:44,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:44,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:44,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971706321] [2022-03-03 19:11:44,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:44,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:44,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:44,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:44,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:44,153 INFO L87 Difference]: Start difference. First operand 141 states and 391 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:44,377 INFO L93 Difference]: Finished difference Result 298 states and 795 transitions. [2022-03-03 19:11:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:44,380 INFO L225 Difference]: With dead ends: 298 [2022-03-03 19:11:44,380 INFO L226 Difference]: Without dead ends: 283 [2022-03-03 19:11:44,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:44,381 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:44,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 71 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-03 19:11:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 150. [2022-03-03 19:11:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-03-03 19:11:44,387 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-03-03 19:11:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:44,387 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-03-03 19:11:44,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-03-03 19:11:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:44,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:44,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:44,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-03 19:11:44,388 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 944690271, now seen corresponding path program 3 times [2022-03-03 19:11:44,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:44,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538834587] [2022-03-03 19:11:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:44,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:44,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:44,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538834587] [2022-03-03 19:11:44,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538834587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:44,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:44,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:44,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457097535] [2022-03-03 19:11:44,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:44,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:44,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:44,476 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:44,697 INFO L93 Difference]: Finished difference Result 281 states and 763 transitions. [2022-03-03 19:11:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:44,707 INFO L225 Difference]: With dead ends: 281 [2022-03-03 19:11:44,707 INFO L226 Difference]: Without dead ends: 266 [2022-03-03 19:11:44,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:44,708 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:44,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 68 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-03 19:11:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 150. [2022-03-03 19:11:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-03-03 19:11:44,712 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-03-03 19:11:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:44,712 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-03-03 19:11:44,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-03-03 19:11:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:44,712 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:44,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:44,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-03 19:11:44,712 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1408578059, now seen corresponding path program 4 times [2022-03-03 19:11:44,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:44,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257602311] [2022-03-03 19:11:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:44,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:44,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257602311] [2022-03-03 19:11:44,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257602311] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:44,799 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:44,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:44,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794812880] [2022-03-03 19:11:44,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:44,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:44,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:44,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:44,801 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:44,965 INFO L93 Difference]: Finished difference Result 289 states and 784 transitions. [2022-03-03 19:11:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:44,968 INFO L225 Difference]: With dead ends: 289 [2022-03-03 19:11:44,968 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 19:11:44,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:44,969 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:44,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 59 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 19:11:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 159. [2022-03-03 19:11:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-03-03 19:11:44,973 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-03-03 19:11:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:44,973 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-03-03 19:11:44,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-03-03 19:11:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:44,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:44,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:44,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-03 19:11:44,973 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 386863921, now seen corresponding path program 5 times [2022-03-03 19:11:44,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:44,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010702459] [2022-03-03 19:11:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:45,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:45,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010702459] [2022-03-03 19:11:45,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010702459] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:45,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:45,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:45,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807606767] [2022-03-03 19:11:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:45,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:45,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:45,064 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:45,286 INFO L93 Difference]: Finished difference Result 322 states and 859 transitions. [2022-03-03 19:11:45,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:45,288 INFO L225 Difference]: With dead ends: 322 [2022-03-03 19:11:45,288 INFO L226 Difference]: Without dead ends: 307 [2022-03-03 19:11:45,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:45,289 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:45,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 68 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-03-03 19:11:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 162. [2022-03-03 19:11:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8322981366459627) internal successors, (456), 161 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2022-03-03 19:11:45,297 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2022-03-03 19:11:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:45,297 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2022-03-03 19:11:45,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2022-03-03 19:11:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:45,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:45,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:45,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-03 19:11:45,298 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 409460469, now seen corresponding path program 6 times [2022-03-03 19:11:45,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:45,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210354226] [2022-03-03 19:11:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:45,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:45,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:45,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210354226] [2022-03-03 19:11:45,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210354226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:45,386 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:45,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:45,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789434809] [2022-03-03 19:11:45,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:45,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:45,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:45,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:45,387 INFO L87 Difference]: Start difference. First operand 162 states and 456 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:45,619 INFO L93 Difference]: Finished difference Result 299 states and 814 transitions. [2022-03-03 19:11:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:45,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:45,620 INFO L225 Difference]: With dead ends: 299 [2022-03-03 19:11:45,620 INFO L226 Difference]: Without dead ends: 284 [2022-03-03 19:11:45,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:45,621 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:45,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 68 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-03 19:11:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 159. [2022-03-03 19:11:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-03-03 19:11:45,627 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-03-03 19:11:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:45,627 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-03-03 19:11:45,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-03-03 19:11:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:45,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:45,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:45,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-03 19:11:45,628 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash 868897657, now seen corresponding path program 7 times [2022-03-03 19:11:45,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:45,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960758072] [2022-03-03 19:11:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:45,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:45,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960758072] [2022-03-03 19:11:45,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960758072] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:45,701 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:45,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:45,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198535525] [2022-03-03 19:11:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:45,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:45,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:45,701 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:45,910 INFO L93 Difference]: Finished difference Result 389 states and 1040 transitions. [2022-03-03 19:11:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:45,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:45,911 INFO L225 Difference]: With dead ends: 389 [2022-03-03 19:11:45,911 INFO L226 Difference]: Without dead ends: 374 [2022-03-03 19:11:45,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:45,913 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 90 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:45,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 65 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-03 19:11:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 166. [2022-03-03 19:11:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.8484848484848486) internal successors, (470), 165 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 470 transitions. [2022-03-03 19:11:45,918 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 470 transitions. Word has length 17 [2022-03-03 19:11:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:45,918 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 470 transitions. [2022-03-03 19:11:45,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 470 transitions. [2022-03-03 19:11:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:45,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:45,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:45,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-03 19:11:45,919 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1320884387, now seen corresponding path program 8 times [2022-03-03 19:11:45,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:45,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638657714] [2022-03-03 19:11:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:46,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638657714] [2022-03-03 19:11:46,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638657714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,003 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:46,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764104160] [2022-03-03 19:11:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:46,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:46,005 INFO L87 Difference]: Start difference. First operand 166 states and 470 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,247 INFO L93 Difference]: Finished difference Result 398 states and 1066 transitions. [2022-03-03 19:11:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,248 INFO L225 Difference]: With dead ends: 398 [2022-03-03 19:11:46,248 INFO L226 Difference]: Without dead ends: 383 [2022-03-03 19:11:46,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:46,250 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 74 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-03 19:11:46,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 169. [2022-03-03 19:11:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.880952380952381) internal successors, (484), 168 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 484 transitions. [2022-03-03 19:11:46,255 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 484 transitions. Word has length 17 [2022-03-03 19:11:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,255 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 484 transitions. [2022-03-03 19:11:46,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 484 transitions. [2022-03-03 19:11:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:46,256 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-03 19:11:46,257 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1298287839, now seen corresponding path program 9 times [2022-03-03 19:11:46,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137551129] [2022-03-03 19:11:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:46,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137551129] [2022-03-03 19:11:46,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137551129] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,334 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:46,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271697865] [2022-03-03 19:11:46,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:46,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:46,336 INFO L87 Difference]: Start difference. First operand 169 states and 484 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,542 INFO L93 Difference]: Finished difference Result 405 states and 1082 transitions. [2022-03-03 19:11:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:46,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,544 INFO L225 Difference]: With dead ends: 405 [2022-03-03 19:11:46,544 INFO L226 Difference]: Without dead ends: 390 [2022-03-03 19:11:46,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:46,545 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 68 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-03 19:11:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 161. [2022-03-03 19:11:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.825) internal successors, (452), 160 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 452 transitions. [2022-03-03 19:11:46,549 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 452 transitions. Word has length 17 [2022-03-03 19:11:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 452 transitions. [2022-03-03 19:11:46,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 452 transitions. [2022-03-03 19:11:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:46,550 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-03 19:11:46,550 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1429044949, now seen corresponding path program 10 times [2022-03-03 19:11:46,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36648560] [2022-03-03 19:11:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:46,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36648560] [2022-03-03 19:11:46,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36648560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,615 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:46,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699944513] [2022-03-03 19:11:46,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:46,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:46,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:46,616 INFO L87 Difference]: Start difference. First operand 161 states and 452 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,760 INFO L93 Difference]: Finished difference Result 340 states and 918 transitions. [2022-03-03 19:11:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:46,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,761 INFO L225 Difference]: With dead ends: 340 [2022-03-03 19:11:46,761 INFO L226 Difference]: Without dead ends: 325 [2022-03-03 19:11:46,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:46,762 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 73 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-03 19:11:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 165. [2022-03-03 19:11:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.841463414634146) internal successors, (466), 164 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 466 transitions. [2022-03-03 19:11:46,766 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 466 transitions. Word has length 17 [2022-03-03 19:11:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,766 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 466 transitions. [2022-03-03 19:11:46,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 466 transitions. [2022-03-03 19:11:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:46,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-03 19:11:46,767 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1020348439, now seen corresponding path program 11 times [2022-03-03 19:11:46,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619374039] [2022-03-03 19:11:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:46,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619374039] [2022-03-03 19:11:46,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619374039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:46,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050323234] [2022-03-03 19:11:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:46,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:46,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:46,839 INFO L87 Difference]: Start difference. First operand 165 states and 466 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,992 INFO L93 Difference]: Finished difference Result 335 states and 909 transitions. [2022-03-03 19:11:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,993 INFO L225 Difference]: With dead ends: 335 [2022-03-03 19:11:46,993 INFO L226 Difference]: Without dead ends: 320 [2022-03-03 19:11:46,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:46,994 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 62 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-03-03 19:11:46,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 171. [2022-03-03 19:11:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-03-03 19:11:46,998 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-03-03 19:11:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,998 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-03-03 19:11:46,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-03-03 19:11:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:46,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-03 19:11:46,999 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1984237037, now seen corresponding path program 12 times [2022-03-03 19:11:47,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076633363] [2022-03-03 19:11:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:47,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076633363] [2022-03-03 19:11:47,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076633363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,077 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:47,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430445426] [2022-03-03 19:11:47,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:47,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:47,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:47,078 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,234 INFO L93 Difference]: Finished difference Result 318 states and 879 transitions. [2022-03-03 19:11:47,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:47,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:47,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,235 INFO L225 Difference]: With dead ends: 318 [2022-03-03 19:11:47,235 INFO L226 Difference]: Without dead ends: 303 [2022-03-03 19:11:47,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:47,236 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 61 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 67 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-03 19:11:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 171. [2022-03-03 19:11:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-03-03 19:11:47,240 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-03-03 19:11:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,240 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-03-03 19:11:47,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-03-03 19:11:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:47,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-03 19:11:47,241 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1369703401, now seen corresponding path program 13 times [2022-03-03 19:11:47,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377681623] [2022-03-03 19:11:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:47,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377681623] [2022-03-03 19:11:47,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377681623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:47,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926643240] [2022-03-03 19:11:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:47,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:47,307 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,452 INFO L93 Difference]: Finished difference Result 385 states and 1046 transitions. [2022-03-03 19:11:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,454 INFO L225 Difference]: With dead ends: 385 [2022-03-03 19:11:47,454 INFO L226 Difference]: Without dead ends: 370 [2022-03-03 19:11:47,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:47,454 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 67 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-03 19:11:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 174. [2022-03-03 19:11:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:47,458 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,459 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:47,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:47,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-03 19:11:47,459 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 615247419, now seen corresponding path program 14 times [2022-03-03 19:11:47,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261990608] [2022-03-03 19:11:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:47,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261990608] [2022-03-03 19:11:47,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261990608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:47,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213320383] [2022-03-03 19:11:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:47,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:47,544 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,705 INFO L93 Difference]: Finished difference Result 383 states and 1039 transitions. [2022-03-03 19:11:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,707 INFO L225 Difference]: With dead ends: 383 [2022-03-03 19:11:47,707 INFO L226 Difference]: Without dead ends: 368 [2022-03-03 19:11:47,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:47,707 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 71 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-03 19:11:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 174. [2022-03-03 19:11:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:47,712 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,713 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:47,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:47,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-03 19:11:47,713 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1736644371, now seen corresponding path program 15 times [2022-03-03 19:11:47,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550877604] [2022-03-03 19:11:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:47,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550877604] [2022-03-03 19:11:47,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550877604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:47,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028095612] [2022-03-03 19:11:47,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:47,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:47,792 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,978 INFO L93 Difference]: Finished difference Result 392 states and 1055 transitions. [2022-03-03 19:11:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:47,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,980 INFO L225 Difference]: With dead ends: 392 [2022-03-03 19:11:47,980 INFO L226 Difference]: Without dead ends: 377 [2022-03-03 19:11:47,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:47,981 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 74 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-03 19:11:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 177. [2022-03-03 19:11:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.909090909090909) internal successors, (512), 176 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2022-03-03 19:11:47,986 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 17 [2022-03-03 19:11:47,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,986 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2022-03-03 19:11:47,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2022-03-03 19:11:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:47,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-03 19:11:47,987 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 776503703, now seen corresponding path program 16 times [2022-03-03 19:11:47,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125446291] [2022-03-03 19:11:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:48,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125446291] [2022-03-03 19:11:48,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125446291] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:48,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904247304] [2022-03-03 19:11:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:48,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:48,061 INFO L87 Difference]: Start difference. First operand 177 states and 512 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,237 INFO L93 Difference]: Finished difference Result 376 states and 1032 transitions. [2022-03-03 19:11:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,238 INFO L225 Difference]: With dead ends: 376 [2022-03-03 19:11:48,238 INFO L226 Difference]: Without dead ends: 361 [2022-03-03 19:11:48,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:48,239 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-03-03 19:11:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 174. [2022-03-03 19:11:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:48,243 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,243 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:48,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:48,243 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-03 19:11:48,244 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -520856585, now seen corresponding path program 17 times [2022-03-03 19:11:48,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036701508] [2022-03-03 19:11:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:48,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036701508] [2022-03-03 19:11:48,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036701508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:48,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032672810] [2022-03-03 19:11:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:48,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:48,313 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,460 INFO L93 Difference]: Finished difference Result 364 states and 991 transitions. [2022-03-03 19:11:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:48,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,461 INFO L225 Difference]: With dead ends: 364 [2022-03-03 19:11:48,462 INFO L226 Difference]: Without dead ends: 349 [2022-03-03 19:11:48,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:48,462 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 72 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-03-03 19:11:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 176. [2022-03-03 19:11:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.8971428571428572) internal successors, (507), 175 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 507 transitions. [2022-03-03 19:11:48,466 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 507 transitions. Word has length 17 [2022-03-03 19:11:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,466 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 507 transitions. [2022-03-03 19:11:48,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 507 transitions. [2022-03-03 19:11:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:48,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-03 19:11:48,467 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash 826274171, now seen corresponding path program 18 times [2022-03-03 19:11:48,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620699405] [2022-03-03 19:11:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:48,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620699405] [2022-03-03 19:11:48,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620699405] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:48,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940831525] [2022-03-03 19:11:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:48,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:48,530 INFO L87 Difference]: Start difference. First operand 176 states and 507 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,679 INFO L93 Difference]: Finished difference Result 343 states and 953 transitions. [2022-03-03 19:11:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:48,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,681 INFO L225 Difference]: With dead ends: 343 [2022-03-03 19:11:48,681 INFO L226 Difference]: Without dead ends: 328 [2022-03-03 19:11:48,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:48,681 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 74 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-03 19:11:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 174. [2022-03-03 19:11:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:48,685 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,685 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:48,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:48,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-03 19:11:48,686 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1248454179, now seen corresponding path program 19 times [2022-03-03 19:11:48,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706496445] [2022-03-03 19:11:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:48,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706496445] [2022-03-03 19:11:48,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706496445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:48,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649981558] [2022-03-03 19:11:48,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:48,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:48,748 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,885 INFO L93 Difference]: Finished difference Result 360 states and 983 transitions. [2022-03-03 19:11:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:48,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,887 INFO L225 Difference]: With dead ends: 360 [2022-03-03 19:11:48,887 INFO L226 Difference]: Without dead ends: 345 [2022-03-03 19:11:48,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:48,887 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 73 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-03-03 19:11:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 177. [2022-03-03 19:11:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:48,891 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,891 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:48,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:48,892 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-03 19:11:48,892 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1971453827, now seen corresponding path program 20 times [2022-03-03 19:11:48,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001739592] [2022-03-03 19:11:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:48,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001739592] [2022-03-03 19:11:48,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001739592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:48,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017765295] [2022-03-03 19:11:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:48,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:48,954 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,120 INFO L93 Difference]: Finished difference Result 377 states and 1017 transitions. [2022-03-03 19:11:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,122 INFO L225 Difference]: With dead ends: 377 [2022-03-03 19:11:49,122 INFO L226 Difference]: Without dead ends: 362 [2022-03-03 19:11:49,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:49,123 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 73 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-03 19:11:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 179. [2022-03-03 19:11:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9157303370786516) internal successors, (519), 178 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 519 transitions. [2022-03-03 19:11:49,127 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 519 transitions. Word has length 17 [2022-03-03 19:11:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,127 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 519 transitions. [2022-03-03 19:11:49,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 519 transitions. [2022-03-03 19:11:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:49,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-03 19:11:49,129 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,129 INFO L85 PathProgramCache]: Analyzing trace with hash 13496993, now seen corresponding path program 21 times [2022-03-03 19:11:49,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145249604] [2022-03-03 19:11:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:49,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145249604] [2022-03-03 19:11:49,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145249604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:49,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302888888] [2022-03-03 19:11:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:49,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:49,198 INFO L87 Difference]: Start difference. First operand 179 states and 519 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,390 INFO L93 Difference]: Finished difference Result 354 states and 972 transitions. [2022-03-03 19:11:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,392 INFO L225 Difference]: With dead ends: 354 [2022-03-03 19:11:49,392 INFO L226 Difference]: Without dead ends: 339 [2022-03-03 19:11:49,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:49,392 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-03-03 19:11:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 177. [2022-03-03 19:11:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:49,398 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,398 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:49,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:49,399 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-03 19:11:49,399 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash 559046241, now seen corresponding path program 22 times [2022-03-03 19:11:49,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511097035] [2022-03-03 19:11:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:49,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511097035] [2022-03-03 19:11:49,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511097035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:49,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113033990] [2022-03-03 19:11:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:49,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:49,473 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,659 INFO L93 Difference]: Finished difference Result 409 states and 1106 transitions. [2022-03-03 19:11:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,660 INFO L225 Difference]: With dead ends: 409 [2022-03-03 19:11:49,660 INFO L226 Difference]: Without dead ends: 394 [2022-03-03 19:11:49,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:49,661 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 67 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-03-03 19:11:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2022-03-03 19:11:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.910614525139665) internal successors, (521), 179 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 521 transitions. [2022-03-03 19:11:49,665 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 521 transitions. Word has length 17 [2022-03-03 19:11:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,665 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 521 transitions. [2022-03-03 19:11:49,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 521 transitions. [2022-03-03 19:11:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:49,666 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-03 19:11:49,666 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1954405597, now seen corresponding path program 23 times [2022-03-03 19:11:49,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88054975] [2022-03-03 19:11:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:49,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88054975] [2022-03-03 19:11:49,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88054975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:49,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165704836] [2022-03-03 19:11:49,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:49,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:49,748 INFO L87 Difference]: Start difference. First operand 180 states and 521 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,948 INFO L93 Difference]: Finished difference Result 407 states and 1110 transitions. [2022-03-03 19:11:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:49,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,949 INFO L225 Difference]: With dead ends: 407 [2022-03-03 19:11:49,949 INFO L226 Difference]: Without dead ends: 392 [2022-03-03 19:11:49,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:49,950 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 72 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-03 19:11:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 183. [2022-03-03 19:11:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9395604395604398) internal successors, (535), 182 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 535 transitions. [2022-03-03 19:11:49,954 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 535 transitions. Word has length 17 [2022-03-03 19:11:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,954 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 535 transitions. [2022-03-03 19:11:49,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 535 transitions. [2022-03-03 19:11:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:49,954 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-03 19:11:49,955 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1977002145, now seen corresponding path program 24 times [2022-03-03 19:11:49,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492015967] [2022-03-03 19:11:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:50,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492015967] [2022-03-03 19:11:50,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492015967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261507627] [2022-03-03 19:11:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,041 INFO L87 Difference]: Start difference. First operand 183 states and 535 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,238 INFO L93 Difference]: Finished difference Result 384 states and 1065 transitions. [2022-03-03 19:11:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,239 INFO L225 Difference]: With dead ends: 384 [2022-03-03 19:11:50,239 INFO L226 Difference]: Without dead ends: 369 [2022-03-03 19:11:50,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:50,240 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 68 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-03 19:11:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 177. [2022-03-03 19:11:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:50,243 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,243 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:50,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,244 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:50,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-03 19:11:50,244 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 812835265, now seen corresponding path program 25 times [2022-03-03 19:11:50,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378449963] [2022-03-03 19:11:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:50,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378449963] [2022-03-03 19:11:50,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378449963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238937929] [2022-03-03 19:11:50,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,306 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,460 INFO L93 Difference]: Finished difference Result 403 states and 1103 transitions. [2022-03-03 19:11:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,461 INFO L225 Difference]: With dead ends: 403 [2022-03-03 19:11:50,461 INFO L226 Difference]: Without dead ends: 388 [2022-03-03 19:11:50,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:50,462 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-03-03 19:11:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 180. [2022-03-03 19:11:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-03-03 19:11:50,465 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-03-03 19:11:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,466 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-03-03 19:11:50,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-03-03 19:11:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:50,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-03 19:11:50,466 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1497181211, now seen corresponding path program 26 times [2022-03-03 19:11:50,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188915996] [2022-03-03 19:11:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:50,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188915996] [2022-03-03 19:11:50,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188915996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848448897] [2022-03-03 19:11:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,535 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,692 INFO L93 Difference]: Finished difference Result 401 states and 1096 transitions. [2022-03-03 19:11:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,693 INFO L225 Difference]: With dead ends: 401 [2022-03-03 19:11:50,693 INFO L226 Difference]: Without dead ends: 386 [2022-03-03 19:11:50,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:50,694 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 76 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-03 19:11:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 178. [2022-03-03 19:11:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-03-03 19:11:50,707 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-03-03 19:11:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,707 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-03-03 19:11:50,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-03-03 19:11:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:50,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-03 19:11:50,708 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash -375784259, now seen corresponding path program 27 times [2022-03-03 19:11:50,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834088293] [2022-03-03 19:11:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:50,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834088293] [2022-03-03 19:11:50,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834088293] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450064891] [2022-03-03 19:11:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,781 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,980 INFO L93 Difference]: Finished difference Result 395 states and 1075 transitions. [2022-03-03 19:11:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,982 INFO L225 Difference]: With dead ends: 395 [2022-03-03 19:11:50,982 INFO L226 Difference]: Without dead ends: 380 [2022-03-03 19:11:50,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:50,982 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 82 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-03 19:11:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 181. [2022-03-03 19:11:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9444444444444446) internal successors, (530), 180 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 530 transitions. [2022-03-03 19:11:50,987 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 530 transitions. Word has length 17 [2022-03-03 19:11:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,987 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 530 transitions. [2022-03-03 19:11:50,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 530 transitions. [2022-03-03 19:11:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:50,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-03 19:11:50,988 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1335924927, now seen corresponding path program 28 times [2022-03-03 19:11:50,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533396582] [2022-03-03 19:11:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:51,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533396582] [2022-03-03 19:11:51,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533396582] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,067 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869422952] [2022-03-03 19:11:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,068 INFO L87 Difference]: Start difference. First operand 181 states and 530 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,250 INFO L93 Difference]: Finished difference Result 379 states and 1052 transitions. [2022-03-03 19:11:51,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,252 INFO L225 Difference]: With dead ends: 379 [2022-03-03 19:11:51,252 INFO L226 Difference]: Without dead ends: 364 [2022-03-03 19:11:51,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:51,253 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 75 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-03-03 19:11:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 178. [2022-03-03 19:11:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-03-03 19:11:51,256 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-03-03 19:11:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,257 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-03-03 19:11:51,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-03-03 19:11:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:51,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-03 19:11:51,257 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1661682081, now seen corresponding path program 29 times [2022-03-03 19:11:51,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152555218] [2022-03-03 19:11:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:51,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152555218] [2022-03-03 19:11:51,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152555218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,328 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702308266] [2022-03-03 19:11:51,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,329 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,479 INFO L93 Difference]: Finished difference Result 363 states and 1003 transitions. [2022-03-03 19:11:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,481 INFO L225 Difference]: With dead ends: 363 [2022-03-03 19:11:51,481 INFO L226 Difference]: Without dead ends: 348 [2022-03-03 19:11:51,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:51,481 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 70 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-03 19:11:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 180. [2022-03-03 19:11:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-03-03 19:11:51,485 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-03-03 19:11:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,485 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-03-03 19:11:51,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-03-03 19:11:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:51,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-03 19:11:51,486 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1286154459, now seen corresponding path program 30 times [2022-03-03 19:11:51,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079042327] [2022-03-03 19:11:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:51,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079042327] [2022-03-03 19:11:51,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079042327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644296986] [2022-03-03 19:11:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,551 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,711 INFO L93 Difference]: Finished difference Result 342 states and 965 transitions. [2022-03-03 19:11:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,713 INFO L225 Difference]: With dead ends: 342 [2022-03-03 19:11:51,713 INFO L226 Difference]: Without dead ends: 327 [2022-03-03 19:11:51,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:51,713 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 78 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-03 19:11:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 177. [2022-03-03 19:11:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:51,717 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,717 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:51,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:51,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-03 19:11:51,718 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash -545211245, now seen corresponding path program 31 times [2022-03-03 19:11:51,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269679250] [2022-03-03 19:11:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:51,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269679250] [2022-03-03 19:11:51,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269679250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054787649] [2022-03-03 19:11:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,789 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,988 INFO L93 Difference]: Finished difference Result 377 states and 1036 transitions. [2022-03-03 19:11:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,990 INFO L225 Difference]: With dead ends: 377 [2022-03-03 19:11:51,990 INFO L226 Difference]: Without dead ends: 362 [2022-03-03 19:11:51,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:51,990 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 74 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-03 19:11:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 186. [2022-03-03 19:11:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9513513513513514) internal successors, (546), 185 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2022-03-03 19:11:51,994 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 17 [2022-03-03 19:11:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,994 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2022-03-03 19:11:51,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2022-03-03 19:11:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:51,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-03 19:11:51,995 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1559974007, now seen corresponding path program 32 times [2022-03-03 19:11:51,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473026453] [2022-03-03 19:11:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:52,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473026453] [2022-03-03 19:11:52,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473026453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127724959] [2022-03-03 19:11:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,075 INFO L87 Difference]: Start difference. First operand 186 states and 546 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,281 INFO L93 Difference]: Finished difference Result 386 states and 1062 transitions. [2022-03-03 19:11:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,282 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:11:52,282 INFO L226 Difference]: Without dead ends: 371 [2022-03-03 19:11:52,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:52,283 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:52,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 67 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-03 19:11:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2022-03-03 19:11:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.978723404255319) internal successors, (560), 188 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2022-03-03 19:11:52,286 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 17 [2022-03-03 19:11:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2022-03-03 19:11:52,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2022-03-03 19:11:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:52,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-03 19:11:52,287 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1582570555, now seen corresponding path program 33 times [2022-03-03 19:11:52,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548289668] [2022-03-03 19:11:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:52,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548289668] [2022-03-03 19:11:52,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548289668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618015977] [2022-03-03 19:11:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,383 INFO L87 Difference]: Start difference. First operand 189 states and 560 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,600 INFO L93 Difference]: Finished difference Result 393 states and 1078 transitions. [2022-03-03 19:11:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,602 INFO L225 Difference]: With dead ends: 393 [2022-03-03 19:11:52,603 INFO L226 Difference]: Without dead ends: 378 [2022-03-03 19:11:52,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:52,603 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:52,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-03-03 19:11:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 181. [2022-03-03 19:11:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-03-03 19:11:52,607 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-03-03 19:11:52,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,607 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-03-03 19:11:52,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,607 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-03-03 19:11:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:52,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-03 19:11:52,608 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 14936047, now seen corresponding path program 34 times [2022-03-03 19:11:52,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920492118] [2022-03-03 19:11:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:52,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920492118] [2022-03-03 19:11:52,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920492118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42913481] [2022-03-03 19:11:52,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,670 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,818 INFO L93 Difference]: Finished difference Result 438 states and 1184 transitions. [2022-03-03 19:11:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,820 INFO L225 Difference]: With dead ends: 438 [2022-03-03 19:11:52,820 INFO L226 Difference]: Without dead ends: 423 [2022-03-03 19:11:52,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:52,821 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:52,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 80 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-03 19:11:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 185. [2022-03-03 19:11:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9456521739130435) internal successors, (542), 184 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 542 transitions. [2022-03-03 19:11:52,829 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 542 transitions. Word has length 17 [2022-03-03 19:11:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,829 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 542 transitions. [2022-03-03 19:11:52,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 542 transitions. [2022-03-03 19:11:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:52,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-03 19:11:52,830 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash -393760463, now seen corresponding path program 35 times [2022-03-03 19:11:52,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004181768] [2022-03-03 19:11:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:52,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004181768] [2022-03-03 19:11:52,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004181768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975151636] [2022-03-03 19:11:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,888 INFO L87 Difference]: Start difference. First operand 185 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,051 INFO L93 Difference]: Finished difference Result 433 states and 1175 transitions. [2022-03-03 19:11:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,053 INFO L225 Difference]: With dead ends: 433 [2022-03-03 19:11:53,053 INFO L226 Difference]: Without dead ends: 418 [2022-03-03 19:11:53,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:53,053 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 70 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-03 19:11:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 187. [2022-03-03 19:11:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9623655913978495) internal successors, (551), 186 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2022-03-03 19:11:53,057 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2022-03-03 19:11:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,057 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2022-03-03 19:11:53,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2022-03-03 19:11:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:53,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-03 19:11:53,058 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,058 INFO L85 PathProgramCache]: Analyzing trace with hash 896621357, now seen corresponding path program 36 times [2022-03-03 19:11:53,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953953965] [2022-03-03 19:11:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:53,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953953965] [2022-03-03 19:11:53,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953953965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458476149] [2022-03-03 19:11:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,116 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,240 INFO L93 Difference]: Finished difference Result 416 states and 1145 transitions. [2022-03-03 19:11:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,242 INFO L225 Difference]: With dead ends: 416 [2022-03-03 19:11:53,242 INFO L226 Difference]: Without dead ends: 401 [2022-03-03 19:11:53,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:53,242 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 71 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-03-03 19:11:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 181. [2022-03-03 19:11:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-03-03 19:11:53,250 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-03-03 19:11:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,250 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-03-03 19:11:53,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-03-03 19:11:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:53,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-03 19:11:53,252 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1511154993, now seen corresponding path program 37 times [2022-03-03 19:11:53,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233922033] [2022-03-03 19:11:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:53,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233922033] [2022-03-03 19:11:53,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233922033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637659134] [2022-03-03 19:11:53,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,349 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,510 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-03-03 19:11:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:53,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,512 INFO L225 Difference]: With dead ends: 437 [2022-03-03 19:11:53,512 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:11:53,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:53,512 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 78 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:11:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 184. [2022-03-03 19:11:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-03-03 19:11:53,516 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-03-03 19:11:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-03-03 19:11:53,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-03-03 19:11:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,516 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:53,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-03 19:11:53,516 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash -798861483, now seen corresponding path program 38 times [2022-03-03 19:11:53,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216712091] [2022-03-03 19:11:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:53,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216712091] [2022-03-03 19:11:53,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216712091] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722322088] [2022-03-03 19:11:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,594 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,720 INFO L93 Difference]: Finished difference Result 435 states and 1194 transitions. [2022-03-03 19:11:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,722 INFO L225 Difference]: With dead ends: 435 [2022-03-03 19:11:53,722 INFO L226 Difference]: Without dead ends: 420 [2022-03-03 19:11:53,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:53,722 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-03 19:11:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 182. [2022-03-03 19:11:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-03-03 19:11:53,725 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-03-03 19:11:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,726 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-03-03 19:11:53,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-03-03 19:11:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-03 19:11:53,726 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 322535469, now seen corresponding path program 39 times [2022-03-03 19:11:53,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700159602] [2022-03-03 19:11:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:53,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700159602] [2022-03-03 19:11:53,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700159602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946838563] [2022-03-03 19:11:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,793 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,975 INFO L93 Difference]: Finished difference Result 468 states and 1258 transitions. [2022-03-03 19:11:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,977 INFO L225 Difference]: With dead ends: 468 [2022-03-03 19:11:53,977 INFO L226 Difference]: Without dead ends: 453 [2022-03-03 19:11:53,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:53,979 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 79 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-03 19:11:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 185. [2022-03-03 19:11:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9782608695652173) internal successors, (548), 184 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 548 transitions. [2022-03-03 19:11:53,991 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 548 transitions. Word has length 17 [2022-03-03 19:11:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,991 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 548 transitions. [2022-03-03 19:11:53,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 548 transitions. [2022-03-03 19:11:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:53,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-03 19:11:53,991 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -637605199, now seen corresponding path program 40 times [2022-03-03 19:11:53,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605021104] [2022-03-03 19:11:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:54,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605021104] [2022-03-03 19:11:54,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605021104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,077 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984135613] [2022-03-03 19:11:54,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,078 INFO L87 Difference]: Start difference. First operand 185 states and 548 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,255 INFO L93 Difference]: Finished difference Result 452 states and 1235 transitions. [2022-03-03 19:11:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,256 INFO L225 Difference]: With dead ends: 452 [2022-03-03 19:11:54,256 INFO L226 Difference]: Without dead ends: 437 [2022-03-03 19:11:54,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,257 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:54,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 78 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-03 19:11:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 182. [2022-03-03 19:11:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-03-03 19:11:54,260 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-03-03 19:11:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,260 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-03-03 19:11:54,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-03-03 19:11:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:54,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-03 19:11:54,261 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1934965487, now seen corresponding path program 41 times [2022-03-03 19:11:54,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979704581] [2022-03-03 19:11:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:54,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979704581] [2022-03-03 19:11:54,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979704581] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140824404] [2022-03-03 19:11:54,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,334 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,474 INFO L93 Difference]: Finished difference Result 446 states and 1215 transitions. [2022-03-03 19:11:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,479 INFO L225 Difference]: With dead ends: 446 [2022-03-03 19:11:54,479 INFO L226 Difference]: Without dead ends: 431 [2022-03-03 19:11:54,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,479 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:54,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 81 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-03 19:11:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 184. [2022-03-03 19:11:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-03-03 19:11:54,483 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-03-03 19:11:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,483 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-03-03 19:11:54,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-03-03 19:11:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,483 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:54,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-03 19:11:54,483 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -587834731, now seen corresponding path program 42 times [2022-03-03 19:11:54,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080903174] [2022-03-03 19:11:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:54,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080903174] [2022-03-03 19:11:54,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080903174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,553 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877941362] [2022-03-03 19:11:54,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,554 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,686 INFO L93 Difference]: Finished difference Result 425 states and 1177 transitions. [2022-03-03 19:11:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,687 INFO L225 Difference]: With dead ends: 425 [2022-03-03 19:11:54,687 INFO L226 Difference]: Without dead ends: 410 [2022-03-03 19:11:54,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,688 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:54,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 78 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-03 19:11:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 179. [2022-03-03 19:11:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9101123595505616) internal successors, (518), 178 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 518 transitions. [2022-03-03 19:11:54,691 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 518 transitions. Word has length 17 [2022-03-03 19:11:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,691 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 518 transitions. [2022-03-03 19:11:54,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 518 transitions. [2022-03-03 19:11:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:54,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-03 19:11:54,692 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1352503261, now seen corresponding path program 43 times [2022-03-03 19:11:54,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131683425] [2022-03-03 19:11:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:54,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131683425] [2022-03-03 19:11:54,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131683425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,755 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296678478] [2022-03-03 19:11:54,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,756 INFO L87 Difference]: Start difference. First operand 179 states and 518 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,893 INFO L93 Difference]: Finished difference Result 323 states and 889 transitions. [2022-03-03 19:11:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,894 INFO L225 Difference]: With dead ends: 323 [2022-03-03 19:11:54,894 INFO L226 Difference]: Without dead ends: 308 [2022-03-03 19:11:54,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:54,894 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:54,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 65 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-03 19:11:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 187. [2022-03-03 19:11:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.913978494623656) internal successors, (542), 186 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2022-03-03 19:11:54,897 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 17 [2022-03-03 19:11:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,898 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2022-03-03 19:11:54,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2022-03-03 19:11:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:54,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-03 19:11:54,898 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 943806751, now seen corresponding path program 44 times [2022-03-03 19:11:54,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584153153] [2022-03-03 19:11:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:54,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584153153] [2022-03-03 19:11:54,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584153153] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193359967] [2022-03-03 19:11:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,996 INFO L87 Difference]: Start difference. First operand 187 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,202 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-03-03 19:11:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,203 INFO L225 Difference]: With dead ends: 353 [2022-03-03 19:11:55,203 INFO L226 Difference]: Without dead ends: 338 [2022-03-03 19:11:55,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:55,203 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:55,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 68 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-03-03 19:11:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 189. [2022-03-03 19:11:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2022-03-03 19:11:55,207 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 17 [2022-03-03 19:11:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,207 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2022-03-03 19:11:55,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2022-03-03 19:11:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:55,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-03 19:11:55,208 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2060778725, now seen corresponding path program 45 times [2022-03-03 19:11:55,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849284328] [2022-03-03 19:11:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:55,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849284328] [2022-03-03 19:11:55,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849284328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446908698] [2022-03-03 19:11:55,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,282 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,448 INFO L93 Difference]: Finished difference Result 336 states and 921 transitions. [2022-03-03 19:11:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,449 INFO L225 Difference]: With dead ends: 336 [2022-03-03 19:11:55,449 INFO L226 Difference]: Without dead ends: 321 [2022-03-03 19:11:55,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:55,449 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:55,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 69 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-03 19:11:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 183. [2022-03-03 19:11:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.901098901098901) internal successors, (528), 182 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2022-03-03 19:11:55,452 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 17 [2022-03-03 19:11:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,453 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2022-03-03 19:11:55,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2022-03-03 19:11:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:55,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-03 19:11:55,453 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,453 INFO L85 PathProgramCache]: Analyzing trace with hash -140211165, now seen corresponding path program 46 times [2022-03-03 19:11:55,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026195040] [2022-03-03 19:11:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:55,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026195040] [2022-03-03 19:11:55,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026195040] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785744770] [2022-03-03 19:11:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,536 INFO L87 Difference]: Start difference. First operand 183 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,639 INFO L93 Difference]: Finished difference Result 324 states and 889 transitions. [2022-03-03 19:11:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,641 INFO L225 Difference]: With dead ends: 324 [2022-03-03 19:11:55,641 INFO L226 Difference]: Without dead ends: 309 [2022-03-03 19:11:55,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:55,641 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 71 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:55,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 63 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-03-03 19:11:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2022-03-03 19:11:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-03-03 19:11:55,657 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-03-03 19:11:55,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,657 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-03-03 19:11:55,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,658 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-03-03 19:11:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:55,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-03 19:11:55,658 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash 790599975, now seen corresponding path program 47 times [2022-03-03 19:11:55,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125181837] [2022-03-03 19:11:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:55,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125181837] [2022-03-03 19:11:55,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125181837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056356972] [2022-03-03 19:11:55,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,742 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,918 INFO L93 Difference]: Finished difference Result 354 states and 954 transitions. [2022-03-03 19:11:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,919 INFO L225 Difference]: With dead ends: 354 [2022-03-03 19:11:55,919 INFO L226 Difference]: Without dead ends: 339 [2022-03-03 19:11:55,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:55,919 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:55,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 78 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-03-03 19:11:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 191. [2022-03-03 19:11:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.905263157894737) internal successors, (552), 190 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 552 transitions. [2022-03-03 19:11:55,923 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 552 transitions. Word has length 17 [2022-03-03 19:11:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,923 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 552 transitions. [2022-03-03 19:11:55,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 552 transitions. [2022-03-03 19:11:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,924 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:55,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-03 19:11:55,924 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2080981795, now seen corresponding path program 48 times [2022-03-03 19:11:55,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216066381] [2022-03-03 19:11:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:55,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216066381] [2022-03-03 19:11:55,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216066381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442429508] [2022-03-03 19:11:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,994 INFO L87 Difference]: Start difference. First operand 191 states and 552 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,153 INFO L93 Difference]: Finished difference Result 333 states and 916 transitions. [2022-03-03 19:11:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,154 INFO L225 Difference]: With dead ends: 333 [2022-03-03 19:11:56,154 INFO L226 Difference]: Without dead ends: 318 [2022-03-03 19:11:56,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:56,154 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:56,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 69 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-03-03 19:11:56,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 189. [2022-03-03 19:11:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-03-03 19:11:56,157 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-03-03 19:11:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,157 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-03-03 19:11:56,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-03-03 19:11:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,158 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:56,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-03 19:11:56,158 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash 424957057, now seen corresponding path program 49 times [2022-03-03 19:11:56,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819546258] [2022-03-03 19:11:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:56,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819546258] [2022-03-03 19:11:56,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819546258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138887646] [2022-03-03 19:11:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,223 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,374 INFO L93 Difference]: Finished difference Result 386 states and 1068 transitions. [2022-03-03 19:11:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,375 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:11:56,375 INFO L226 Difference]: Without dead ends: 371 [2022-03-03 19:11:56,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:56,375 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:56,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 68 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-03 19:11:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 194. [2022-03-03 19:11:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.922279792746114) internal successors, (564), 193 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 564 transitions. [2022-03-03 19:11:56,379 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 564 transitions. Word has length 17 [2022-03-03 19:11:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,379 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 564 transitions. [2022-03-03 19:11:56,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 564 transitions. [2022-03-03 19:11:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:56,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-03 19:11:56,380 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1885059419, now seen corresponding path program 50 times [2022-03-03 19:11:56,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175935064] [2022-03-03 19:11:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:56,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175935064] [2022-03-03 19:11:56,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175935064] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658598549] [2022-03-03 19:11:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,452 INFO L87 Difference]: Start difference. First operand 194 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,572 INFO L93 Difference]: Finished difference Result 390 states and 1074 transitions. [2022-03-03 19:11:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,573 INFO L225 Difference]: With dead ends: 390 [2022-03-03 19:11:56,573 INFO L226 Difference]: Without dead ends: 375 [2022-03-03 19:11:56,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:56,574 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:56,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 68 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-03 19:11:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 192. [2022-03-03 19:11:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:56,578 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,579 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:56,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,580 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:56,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-03 19:11:56,580 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash 801592695, now seen corresponding path program 51 times [2022-03-03 19:11:56,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877424332] [2022-03-03 19:11:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:56,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877424332] [2022-03-03 19:11:56,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877424332] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,654 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769148122] [2022-03-03 19:11:56,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,655 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,782 INFO L93 Difference]: Finished difference Result 386 states and 1060 transitions. [2022-03-03 19:11:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,783 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:11:56,783 INFO L226 Difference]: Without dead ends: 371 [2022-03-03 19:11:56,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:56,783 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:56,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 62 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-03 19:11:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 192. [2022-03-03 19:11:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:56,787 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,787 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:56,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:56,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-03 19:11:56,787 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1581265029, now seen corresponding path program 52 times [2022-03-03 19:11:56,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71172729] [2022-03-03 19:11:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:56,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71172729] [2022-03-03 19:11:56,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71172729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,844 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336839685] [2022-03-03 19:11:56,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,844 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,006 INFO L93 Difference]: Finished difference Result 464 states and 1256 transitions. [2022-03-03 19:11:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,008 INFO L225 Difference]: With dead ends: 464 [2022-03-03 19:11:57,008 INFO L226 Difference]: Without dead ends: 449 [2022-03-03 19:11:57,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:57,008 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 76 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-03 19:11:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 195. [2022-03-03 19:11:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-03-03 19:11:57,012 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-03-03 19:11:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,012 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-03-03 19:11:57,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-03-03 19:11:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:57,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-03 19:11:57,013 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash -728751447, now seen corresponding path program 53 times [2022-03-03 19:11:57,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139639700] [2022-03-03 19:11:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:57,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139639700] [2022-03-03 19:11:57,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139639700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,075 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234201880] [2022-03-03 19:11:57,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,075 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,246 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2022-03-03 19:11:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,248 INFO L225 Difference]: With dead ends: 468 [2022-03-03 19:11:57,248 INFO L226 Difference]: Without dead ends: 453 [2022-03-03 19:11:57,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:57,250 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 78 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-03 19:11:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 193. [2022-03-03 19:11:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-03-03 19:11:57,253 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-03-03 19:11:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,254 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-03-03 19:11:57,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,255 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-03-03 19:11:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:57,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-03 19:11:57,255 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,255 INFO L85 PathProgramCache]: Analyzing trace with hash 392645505, now seen corresponding path program 54 times [2022-03-03 19:11:57,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672318173] [2022-03-03 19:11:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:57,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672318173] [2022-03-03 19:11:57,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672318173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095469081] [2022-03-03 19:11:57,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,316 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,488 INFO L93 Difference]: Finished difference Result 431 states and 1182 transitions. [2022-03-03 19:11:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,489 INFO L225 Difference]: With dead ends: 431 [2022-03-03 19:11:57,489 INFO L226 Difference]: Without dead ends: 416 [2022-03-03 19:11:57,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:57,490 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 79 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-03-03 19:11:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 196. [2022-03-03 19:11:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.948717948717949) internal successors, (575), 195 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 575 transitions. [2022-03-03 19:11:57,493 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 575 transitions. Word has length 17 [2022-03-03 19:11:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,493 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 575 transitions. [2022-03-03 19:11:57,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 575 transitions. [2022-03-03 19:11:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:57,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-03 19:11:57,494 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -567495163, now seen corresponding path program 55 times [2022-03-03 19:11:57,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973257231] [2022-03-03 19:11:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:57,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973257231] [2022-03-03 19:11:57,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973257231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543536500] [2022-03-03 19:11:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,574 INFO L87 Difference]: Start difference. First operand 196 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,720 INFO L93 Difference]: Finished difference Result 415 states and 1159 transitions. [2022-03-03 19:11:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,721 INFO L225 Difference]: With dead ends: 415 [2022-03-03 19:11:57,721 INFO L226 Difference]: Without dead ends: 400 [2022-03-03 19:11:57,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:57,721 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 74 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-03-03 19:11:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 193. [2022-03-03 19:11:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-03-03 19:11:57,725 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-03-03 19:11:57,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,725 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-03-03 19:11:57,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-03-03 19:11:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:57,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-03 19:11:57,726 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1864855451, now seen corresponding path program 56 times [2022-03-03 19:11:57,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819528655] [2022-03-03 19:11:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:57,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819528655] [2022-03-03 19:11:57,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819528655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,793 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083387767] [2022-03-03 19:11:57,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,794 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,970 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2022-03-03 19:11:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,971 INFO L225 Difference]: With dead ends: 449 [2022-03-03 19:11:57,971 INFO L226 Difference]: Without dead ends: 434 [2022-03-03 19:11:57,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:57,971 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 75 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-03 19:11:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 195. [2022-03-03 19:11:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-03-03 19:11:57,975 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-03-03 19:11:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,975 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-03-03 19:11:57,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-03-03 19:11:57,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:57,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-03 19:11:57,976 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash -517724695, now seen corresponding path program 57 times [2022-03-03 19:11:57,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035337752] [2022-03-03 19:11:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:58,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035337752] [2022-03-03 19:11:58,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035337752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619208527] [2022-03-03 19:11:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,049 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,223 INFO L93 Difference]: Finished difference Result 428 states and 1191 transitions. [2022-03-03 19:11:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,224 INFO L225 Difference]: With dead ends: 428 [2022-03-03 19:11:58,224 INFO L226 Difference]: Without dead ends: 413 [2022-03-03 19:11:58,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:58,225 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 80 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-03 19:11:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2022-03-03 19:11:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:58,229 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,229 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:58,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:58,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-03 19:11:58,230 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -57893061, now seen corresponding path program 58 times [2022-03-03 19:11:58,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441897866] [2022-03-03 19:11:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:58,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441897866] [2022-03-03 19:11:58,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441897866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827647821] [2022-03-03 19:11:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,287 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,410 INFO L93 Difference]: Finished difference Result 429 states and 1161 transitions. [2022-03-03 19:11:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,411 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:11:58,411 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:11:58,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:58,411 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:11:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 194. [2022-03-03 19:11:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.911917098445596) internal successors, (562), 193 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 562 transitions. [2022-03-03 19:11:58,415 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 562 transitions. Word has length 17 [2022-03-03 19:11:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,415 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 562 transitions. [2022-03-03 19:11:58,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 562 transitions. [2022-03-03 19:11:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,415 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:58,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-03 19:11:58,415 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518793, now seen corresponding path program 59 times [2022-03-03 19:11:58,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628987962] [2022-03-03 19:11:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:58,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628987962] [2022-03-03 19:11:58,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628987962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36536973] [2022-03-03 19:11:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,492 INFO L87 Difference]: Start difference. First operand 194 states and 562 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,651 INFO L93 Difference]: Finished difference Result 430 states and 1172 transitions. [2022-03-03 19:11:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,652 INFO L225 Difference]: With dead ends: 430 [2022-03-03 19:11:58,652 INFO L226 Difference]: Without dead ends: 415 [2022-03-03 19:11:58,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:58,653 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 77 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-03 19:11:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 196. [2022-03-03 19:11:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.928205128205128) internal successors, (571), 195 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 571 transitions. [2022-03-03 19:11:58,657 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 571 transitions. Word has length 17 [2022-03-03 19:11:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,657 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 571 transitions. [2022-03-03 19:11:58,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 571 transitions. [2022-03-03 19:11:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-03 19:11:58,658 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash 79611963, now seen corresponding path program 60 times [2022-03-03 19:11:58,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106496107] [2022-03-03 19:11:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:58,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106496107] [2022-03-03 19:11:58,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106496107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377843483] [2022-03-03 19:11:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,729 INFO L87 Difference]: Start difference. First operand 196 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,882 INFO L93 Difference]: Finished difference Result 409 states and 1134 transitions. [2022-03-03 19:11:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,883 INFO L225 Difference]: With dead ends: 409 [2022-03-03 19:11:58,883 INFO L226 Difference]: Without dead ends: 394 [2022-03-03 19:11:58,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:58,884 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 79 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-03-03 19:11:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 192. [2022-03-03 19:11:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:58,888 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,888 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:58,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:58,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-03 19:11:58,889 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash -914182639, now seen corresponding path program 61 times [2022-03-03 19:11:58,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684061322] [2022-03-03 19:11:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:58,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684061322] [2022-03-03 19:11:58,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684061322] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768904465] [2022-03-03 19:11:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,948 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,091 INFO L93 Difference]: Finished difference Result 328 states and 903 transitions. [2022-03-03 19:11:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,092 INFO L225 Difference]: With dead ends: 328 [2022-03-03 19:11:59,092 INFO L226 Difference]: Without dead ends: 313 [2022-03-03 19:11:59,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:59,093 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 65 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 74 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-03 19:11:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 197. [2022-03-03 19:11:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-03-03 19:11:59,096 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-03-03 19:11:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,096 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-03-03 19:11:59,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-03-03 19:11:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:59,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-03 19:11:59,097 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1637182287, now seen corresponding path program 62 times [2022-03-03 19:11:59,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780556381] [2022-03-03 19:11:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:59,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780556381] [2022-03-03 19:11:59,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780556381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085228226] [2022-03-03 19:11:59,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,164 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,321 INFO L93 Difference]: Finished difference Result 357 states and 963 transitions. [2022-03-03 19:11:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,322 INFO L225 Difference]: With dead ends: 357 [2022-03-03 19:11:59,322 INFO L226 Difference]: Without dead ends: 342 [2022-03-03 19:11:59,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:59,322 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 76 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-03-03 19:11:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 199. [2022-03-03 19:11:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-03-03 19:11:59,326 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-03-03 19:11:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,326 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-03-03 19:11:59,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-03-03 19:11:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,327 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:59,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-03 19:11:59,327 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash 347768533, now seen corresponding path program 63 times [2022-03-03 19:11:59,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240028326] [2022-03-03 19:11:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:59,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240028326] [2022-03-03 19:11:59,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240028326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135322639] [2022-03-03 19:11:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,391 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,551 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2022-03-03 19:11:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,552 INFO L225 Difference]: With dead ends: 334 [2022-03-03 19:11:59,552 INFO L226 Difference]: Without dead ends: 319 [2022-03-03 19:11:59,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:59,553 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 65 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-03 19:11:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2022-03-03 19:11:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:11:59,556 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:11:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,556 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:11:59,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:11:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,557 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:59,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-03 19:11:59,557 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1049436965, now seen corresponding path program 64 times [2022-03-03 19:11:59,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972619819] [2022-03-03 19:11:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:59,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972619819] [2022-03-03 19:11:59,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972619819] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119398329] [2022-03-03 19:11:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,621 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,775 INFO L93 Difference]: Finished difference Result 349 states and 945 transitions. [2022-03-03 19:11:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:11:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,776 INFO L225 Difference]: With dead ends: 349 [2022-03-03 19:11:59,776 INFO L226 Difference]: Without dead ends: 334 [2022-03-03 19:11:59,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:59,776 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-03-03 19:11:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 199. [2022-03-03 19:11:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-03-03 19:11:59,780 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-03-03 19:11:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,780 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-03-03 19:11:59,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-03-03 19:11:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-03 19:11:59,781 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 935513855, now seen corresponding path program 65 times [2022-03-03 19:11:59,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899268790] [2022-03-03 19:11:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:11:59,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899268790] [2022-03-03 19:11:59,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899268790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439786761] [2022-03-03 19:11:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,842 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,002 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-03-03 19:12:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,003 INFO L225 Difference]: With dead ends: 353 [2022-03-03 19:12:00,003 INFO L226 Difference]: Without dead ends: 338 [2022-03-03 19:12:00,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:00,003 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-03-03 19:12:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2022-03-03 19:12:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-03-03 19:12:00,007 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-03-03 19:12:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,007 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-03-03 19:12:00,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-03-03 19:12:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:00,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-03 19:12:00,008 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash -672801327, now seen corresponding path program 66 times [2022-03-03 19:12:00,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060110585] [2022-03-03 19:12:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:00,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060110585] [2022-03-03 19:12:00,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060110585] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366486712] [2022-03-03 19:12:00,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,073 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,211 INFO L93 Difference]: Finished difference Result 324 states and 891 transitions. [2022-03-03 19:12:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,212 INFO L225 Difference]: With dead ends: 324 [2022-03-03 19:12:00,212 INFO L226 Difference]: Without dead ends: 309 [2022-03-03 19:12:00,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:00,212 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-03-03 19:12:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2022-03-03 19:12:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:00,215 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,216 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:00,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,216 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:00,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-03 19:12:00,216 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 571626125, now seen corresponding path program 67 times [2022-03-03 19:12:00,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181498697] [2022-03-03 19:12:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:00,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181498697] [2022-03-03 19:12:00,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181498697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,284 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201744988] [2022-03-03 19:12:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,284 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,389 INFO L93 Difference]: Finished difference Result 442 states and 1201 transitions. [2022-03-03 19:12:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,390 INFO L225 Difference]: With dead ends: 442 [2022-03-03 19:12:00,390 INFO L226 Difference]: Without dead ends: 427 [2022-03-03 19:12:00,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:00,390 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 79 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-03 19:12:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 198. [2022-03-03 19:12:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-03-03 19:12:00,394 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-03-03 19:12:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,394 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-03-03 19:12:00,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-03-03 19:12:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:00,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-03 19:12:00,395 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -151373523, now seen corresponding path program 68 times [2022-03-03 19:12:00,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133862517] [2022-03-03 19:12:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:00,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133862517] [2022-03-03 19:12:00,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133862517] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432402630] [2022-03-03 19:12:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,456 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,615 INFO L93 Difference]: Finished difference Result 465 states and 1248 transitions. [2022-03-03 19:12:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,616 INFO L225 Difference]: With dead ends: 465 [2022-03-03 19:12:00,616 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 19:12:00,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:00,616 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 80 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 19:12:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 200. [2022-03-03 19:12:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-03-03 19:12:00,620 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-03-03 19:12:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,620 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-03-03 19:12:00,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-03-03 19:12:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,621 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:00,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-03 19:12:00,621 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1833577297, now seen corresponding path program 69 times [2022-03-03 19:12:00,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942048442] [2022-03-03 19:12:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:00,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942048442] [2022-03-03 19:12:00,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942048442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,686 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326161256] [2022-03-03 19:12:00,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,687 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,802 INFO L93 Difference]: Finished difference Result 442 states and 1203 transitions. [2022-03-03 19:12:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,803 INFO L225 Difference]: With dead ends: 442 [2022-03-03 19:12:00,803 INFO L226 Difference]: Without dead ends: 427 [2022-03-03 19:12:00,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:00,803 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 77 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-03 19:12:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2022-03-03 19:12:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:00,807 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,807 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:00,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:00,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-03 19:12:00,808 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1915840751, now seen corresponding path program 70 times [2022-03-03 19:12:00,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168738879] [2022-03-03 19:12:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:00,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168738879] [2022-03-03 19:12:00,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168738879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,861 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091020147] [2022-03-03 19:12:00,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,861 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,031 INFO L93 Difference]: Finished difference Result 393 states and 1085 transitions. [2022-03-03 19:12:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,032 INFO L225 Difference]: With dead ends: 393 [2022-03-03 19:12:01,032 INFO L226 Difference]: Without dead ends: 378 [2022-03-03 19:12:01,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,032 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 68 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-03-03 19:12:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 199. [2022-03-03 19:12:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-03-03 19:12:01,036 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-03-03 19:12:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,036 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-03-03 19:12:01,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-03-03 19:12:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:01,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-03 19:12:01,037 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash -520481395, now seen corresponding path program 71 times [2022-03-03 19:12:01,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970745512] [2022-03-03 19:12:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:01,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970745512] [2022-03-03 19:12:01,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970745512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307000533] [2022-03-03 19:12:01,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,135 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,339 INFO L93 Difference]: Finished difference Result 391 states and 1089 transitions. [2022-03-03 19:12:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,340 INFO L225 Difference]: With dead ends: 391 [2022-03-03 19:12:01,340 INFO L226 Difference]: Without dead ends: 376 [2022-03-03 19:12:01,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,340 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 77 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-03 19:12:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2022-03-03 19:12:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.955223880597015) internal successors, (594), 201 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2022-03-03 19:12:01,344 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2022-03-03 19:12:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,344 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2022-03-03 19:12:01,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2022-03-03 19:12:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,345 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:01,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-03 19:12:01,345 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,345 INFO L85 PathProgramCache]: Analyzing trace with hash -497884847, now seen corresponding path program 72 times [2022-03-03 19:12:01,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540320237] [2022-03-03 19:12:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:01,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540320237] [2022-03-03 19:12:01,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540320237] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,416 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643974417] [2022-03-03 19:12:01,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,417 INFO L87 Difference]: Start difference. First operand 202 states and 594 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,610 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2022-03-03 19:12:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,611 INFO L225 Difference]: With dead ends: 368 [2022-03-03 19:12:01,611 INFO L226 Difference]: Without dead ends: 353 [2022-03-03 19:12:01,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,611 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 69 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-03 19:12:01,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 196. [2022-03-03 19:12:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:01,615 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:01,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,615 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:01,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,615 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:01,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-03 19:12:01,616 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1662051727, now seen corresponding path program 73 times [2022-03-03 19:12:01,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884410007] [2022-03-03 19:12:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:01,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884410007] [2022-03-03 19:12:01,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884410007] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072347905] [2022-03-03 19:12:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,674 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,832 INFO L93 Difference]: Finished difference Result 445 states and 1229 transitions. [2022-03-03 19:12:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:01,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,833 INFO L225 Difference]: With dead ends: 445 [2022-03-03 19:12:01,833 INFO L226 Difference]: Without dead ends: 430 [2022-03-03 19:12:01,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:01,833 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 74 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 85 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-03-03 19:12:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 199. [2022-03-03 19:12:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:01,837 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,837 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:01,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:01,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-03 19:12:01,838 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash 322899093, now seen corresponding path program 74 times [2022-03-03 19:12:01,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105712476] [2022-03-03 19:12:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:01,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105712476] [2022-03-03 19:12:01,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105712476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707799364] [2022-03-03 19:12:01,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,895 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,094 INFO L93 Difference]: Finished difference Result 443 states and 1222 transitions. [2022-03-03 19:12:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,095 INFO L225 Difference]: With dead ends: 443 [2022-03-03 19:12:02,095 INFO L226 Difference]: Without dead ends: 428 [2022-03-03 19:12:02,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,095 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 87 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-03 19:12:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 197. [2022-03-03 19:12:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:02,099 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:02,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,099 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:02,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:02,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-03 19:12:02,100 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1444296045, now seen corresponding path program 75 times [2022-03-03 19:12:02,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178152168] [2022-03-03 19:12:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:02,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178152168] [2022-03-03 19:12:02,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178152168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040376672] [2022-03-03 19:12:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,172 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,328 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-03-03 19:12:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,329 INFO L225 Difference]: With dead ends: 437 [2022-03-03 19:12:02,329 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:12:02,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,329 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 79 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 83 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:12:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 200. [2022-03-03 19:12:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-03-03 19:12:02,333 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-03-03 19:12:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,333 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-03-03 19:12:02,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-03-03 19:12:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,333 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:02,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-03 19:12:02,333 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,334 INFO L85 PathProgramCache]: Analyzing trace with hash 484155377, now seen corresponding path program 76 times [2022-03-03 19:12:02,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192281010] [2022-03-03 19:12:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:02,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192281010] [2022-03-03 19:12:02,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192281010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973644848] [2022-03-03 19:12:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,385 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,510 INFO L93 Difference]: Finished difference Result 421 states and 1178 transitions. [2022-03-03 19:12:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,511 INFO L225 Difference]: With dead ends: 421 [2022-03-03 19:12:02,512 INFO L226 Difference]: Without dead ends: 406 [2022-03-03 19:12:02,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,512 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 80 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-03-03 19:12:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 197. [2022-03-03 19:12:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:02,515 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,515 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:02,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,516 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:02,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-03 19:12:02,516 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash -813204911, now seen corresponding path program 77 times [2022-03-03 19:12:02,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243408112] [2022-03-03 19:12:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:02,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243408112] [2022-03-03 19:12:02,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243408112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524142978] [2022-03-03 19:12:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,602 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,777 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2022-03-03 19:12:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,778 INFO L225 Difference]: With dead ends: 405 [2022-03-03 19:12:02,778 INFO L226 Difference]: Without dead ends: 390 [2022-03-03 19:12:02,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,778 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-03 19:12:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 199. [2022-03-03 19:12:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:02,781 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,782 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:02,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:02,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-03 19:12:02,782 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash 533925845, now seen corresponding path program 78 times [2022-03-03 19:12:02,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055094998] [2022-03-03 19:12:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:02,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055094998] [2022-03-03 19:12:02,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055094998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962884645] [2022-03-03 19:12:02,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,839 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,003 INFO L93 Difference]: Finished difference Result 384 states and 1091 transitions. [2022-03-03 19:12:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,004 INFO L225 Difference]: With dead ends: 384 [2022-03-03 19:12:03,004 INFO L226 Difference]: Without dead ends: 369 [2022-03-03 19:12:03,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:03,004 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 80 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-03 19:12:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 195. [2022-03-03 19:12:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:03,012 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,012 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:03,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:03,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-03 19:12:03,013 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -635821033, now seen corresponding path program 79 times [2022-03-03 19:12:03,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444501157] [2022-03-03 19:12:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:03,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444501157] [2022-03-03 19:12:03,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444501157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,067 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180640713] [2022-03-03 19:12:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,067 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,224 INFO L93 Difference]: Finished difference Result 425 states and 1163 transitions. [2022-03-03 19:12:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,225 INFO L225 Difference]: With dead ends: 425 [2022-03-03 19:12:03,225 INFO L226 Difference]: Without dead ends: 410 [2022-03-03 19:12:03,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:03,226 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 83 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-03 19:12:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 200. [2022-03-03 19:12:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-03-03 19:12:03,229 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-03-03 19:12:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,229 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-03-03 19:12:03,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-03-03 19:12:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:03,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-03 19:12:03,230 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1349129787, now seen corresponding path program 80 times [2022-03-03 19:12:03,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961340528] [2022-03-03 19:12:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:03,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961340528] [2022-03-03 19:12:03,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961340528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698380581] [2022-03-03 19:12:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,295 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,464 INFO L93 Difference]: Finished difference Result 429 states and 1169 transitions. [2022-03-03 19:12:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,465 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:12:03,465 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:12:03,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:03,465 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 87 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:12:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 198. [2022-03-03 19:12:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-03-03 19:12:03,468 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-03-03 19:12:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,468 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-03-03 19:12:03,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-03-03 19:12:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:03,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-03 19:12:03,469 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -259185395, now seen corresponding path program 81 times [2022-03-03 19:12:03,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592511102] [2022-03-03 19:12:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:03,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592511102] [2022-03-03 19:12:03,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592511102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088380608] [2022-03-03 19:12:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,533 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,688 INFO L93 Difference]: Finished difference Result 429 states and 1163 transitions. [2022-03-03 19:12:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,689 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:12:03,689 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:12:03,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:03,689 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 85 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:12:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 196. [2022-03-03 19:12:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:03,693 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,693 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:03,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:03,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-03 19:12:03,693 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,694 INFO L85 PathProgramCache]: Analyzing trace with hash 520486939, now seen corresponding path program 82 times [2022-03-03 19:12:03,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625324904] [2022-03-03 19:12:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:03,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625324904] [2022-03-03 19:12:03,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625324904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308511126] [2022-03-03 19:12:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,733 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,839 INFO L93 Difference]: Finished difference Result 451 states and 1224 transitions. [2022-03-03 19:12:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,840 INFO L225 Difference]: With dead ends: 451 [2022-03-03 19:12:03,840 INFO L226 Difference]: Without dead ends: 436 [2022-03-03 19:12:03,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:03,840 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 96 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 78 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-03-03 19:12:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 199. [2022-03-03 19:12:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:03,854 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,854 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:03,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:03,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-03 19:12:03,854 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1789529537, now seen corresponding path program 83 times [2022-03-03 19:12:03,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29347663] [2022-03-03 19:12:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:03,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29347663] [2022-03-03 19:12:03,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29347663] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,920 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340101378] [2022-03-03 19:12:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,920 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,085 INFO L93 Difference]: Finished difference Result 455 states and 1230 transitions. [2022-03-03 19:12:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,086 INFO L225 Difference]: With dead ends: 455 [2022-03-03 19:12:04,086 INFO L226 Difference]: Without dead ends: 440 [2022-03-03 19:12:04,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,087 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 91 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-03 19:12:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 197. [2022-03-03 19:12:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:04,090 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,090 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:04,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:04,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-03 19:12:04,091 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash -668132585, now seen corresponding path program 84 times [2022-03-03 19:12:04,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801889729] [2022-03-03 19:12:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:04,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801889729] [2022-03-03 19:12:04,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801889729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,154 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110814806] [2022-03-03 19:12:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,155 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,338 INFO L93 Difference]: Finished difference Result 422 states and 1158 transitions. [2022-03-03 19:12:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,339 INFO L225 Difference]: With dead ends: 422 [2022-03-03 19:12:04,339 INFO L226 Difference]: Without dead ends: 407 [2022-03-03 19:12:04,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,339 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 87 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-03-03 19:12:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 200. [2022-03-03 19:12:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-03-03 19:12:04,342 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-03-03 19:12:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,343 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-03-03 19:12:04,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-03-03 19:12:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,343 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:04,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-03 19:12:04,343 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1628273253, now seen corresponding path program 85 times [2022-03-03 19:12:04,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118353512] [2022-03-03 19:12:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:04,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118353512] [2022-03-03 19:12:04,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118353512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520429746] [2022-03-03 19:12:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,408 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,591 INFO L93 Difference]: Finished difference Result 406 states and 1135 transitions. [2022-03-03 19:12:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,592 INFO L225 Difference]: With dead ends: 406 [2022-03-03 19:12:04,592 INFO L226 Difference]: Without dead ends: 391 [2022-03-03 19:12:04,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,592 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 88 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-03-03 19:12:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 197. [2022-03-03 19:12:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:04,595 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:04,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,595 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:04,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,596 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:04,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-03 19:12:04,596 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1369333755, now seen corresponding path program 86 times [2022-03-03 19:12:04,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045324029] [2022-03-03 19:12:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:04,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045324029] [2022-03-03 19:12:04,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045324029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273687833] [2022-03-03 19:12:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,657 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,823 INFO L93 Difference]: Finished difference Result 440 states and 1205 transitions. [2022-03-03 19:12:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,824 INFO L225 Difference]: With dead ends: 440 [2022-03-03 19:12:04,824 INFO L226 Difference]: Without dead ends: 425 [2022-03-03 19:12:04,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,824 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 90 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-03 19:12:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 199. [2022-03-03 19:12:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:04,828 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,828 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:04,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,828 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:04,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-03 19:12:04,828 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1578502785, now seen corresponding path program 87 times [2022-03-03 19:12:04,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151224618] [2022-03-03 19:12:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:04,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151224618] [2022-03-03 19:12:04,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151224618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894501700] [2022-03-03 19:12:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,884 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:05,034 INFO L93 Difference]: Finished difference Result 419 states and 1167 transitions. [2022-03-03 19:12:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:05,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:05,035 INFO L225 Difference]: With dead ends: 419 [2022-03-03 19:12:05,035 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:12:05,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:05,035 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:05,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 80 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:12:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 196. [2022-03-03 19:12:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:05,038 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:05,038 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:05,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:05,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:05,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-03 19:12:05,039 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1118671151, now seen corresponding path program 88 times [2022-03-03 19:12:05,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:05,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923665838] [2022-03-03 19:12:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:05,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923665838] [2022-03-03 19:12:05,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923665838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:05,100 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:05,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:05,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530391615] [2022-03-03 19:12:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:05,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:05,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:05,101 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:05,251 INFO L93 Difference]: Finished difference Result 382 states and 1052 transitions. [2022-03-03 19:12:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:05,252 INFO L225 Difference]: With dead ends: 382 [2022-03-03 19:12:05,252 INFO L226 Difference]: Without dead ends: 367 [2022-03-03 19:12:05,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:05,252 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:05,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 84 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-03 19:12:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 198. [2022-03-03 19:12:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-03-03 19:12:05,255 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-03-03 19:12:05,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:05,255 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-03-03 19:12:05,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-03-03 19:12:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:05,256 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:05,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:05,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-03 19:12:05,256 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1966670413, now seen corresponding path program 89 times [2022-03-03 19:12:05,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:05,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925700647] [2022-03-03 19:12:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:05,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925700647] [2022-03-03 19:12:05,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925700647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:05,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:05,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:05,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033704379] [2022-03-03 19:12:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:05,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:05,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:05,314 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:05,481 INFO L93 Difference]: Finished difference Result 383 states and 1063 transitions. [2022-03-03 19:12:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:05,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:05,482 INFO L225 Difference]: With dead ends: 383 [2022-03-03 19:12:05,482 INFO L226 Difference]: Without dead ends: 368 [2022-03-03 19:12:05,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:05,482 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:05,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 85 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-03 19:12:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 200. [2022-03-03 19:12:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-03-03 19:12:05,485 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-03-03 19:12:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:05,485 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-03-03 19:12:05,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-03-03 19:12:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:05,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:05,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:05,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-03 19:12:05,486 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash -981166127, now seen corresponding path program 90 times [2022-03-03 19:12:05,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:05,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368903957] [2022-03-03 19:12:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:05,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368903957] [2022-03-03 19:12:05,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368903957] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:05,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:05,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:05,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588319349] [2022-03-03 19:12:05,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:05,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:05,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:05,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:05,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:05,559 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:05,718 INFO L93 Difference]: Finished difference Result 362 states and 1025 transitions. [2022-03-03 19:12:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-03 19:12:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:05,719 INFO L225 Difference]: With dead ends: 362 [2022-03-03 19:12:05,719 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:12:05,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:05,719 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:05,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 83 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:12:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 195. [2022-03-03 19:12:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:05,722 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:05,723 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:05,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:05,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:05,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:05,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-03 19:12:05,723 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1951800714, now seen corresponding path program 1 times [2022-03-03 19:12:05,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:05,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540277904] [2022-03-03 19:12:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:05,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540277904] [2022-03-03 19:12:05,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540277904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:05,774 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:05,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:12:05,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903702284] [2022-03-03 19:12:05,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:05,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:12:05,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:12:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:12:05,775 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:05,878 INFO L93 Difference]: Finished difference Result 369 states and 1032 transitions. [2022-03-03 19:12:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:05,879 INFO L225 Difference]: With dead ends: 369 [2022-03-03 19:12:05,879 INFO L226 Difference]: Without dead ends: 311 [2022-03-03 19:12:05,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:05,880 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:05,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 43 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-03-03 19:12:05,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 222. [2022-03-03 19:12:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.8914027149321266) internal successors, (639), 221 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 639 transitions. [2022-03-03 19:12:05,884 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 639 transitions. Word has length 18 [2022-03-03 19:12:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:05,884 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 639 transitions. [2022-03-03 19:12:05,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 639 transitions. [2022-03-03 19:12:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:05,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:05,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-03 19:12:05,885 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 690829094, now seen corresponding path program 1 times [2022-03-03 19:12:05,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:05,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425745442] [2022-03-03 19:12:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:05,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425745442] [2022-03-03 19:12:05,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425745442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:05,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:05,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:12:05,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978783566] [2022-03-03 19:12:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:05,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:12:05,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:12:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:12:05,946 INFO L87 Difference]: Start difference. First operand 222 states and 639 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:06,056 INFO L93 Difference]: Finished difference Result 390 states and 1082 transitions. [2022-03-03 19:12:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:06,057 INFO L225 Difference]: With dead ends: 390 [2022-03-03 19:12:06,057 INFO L226 Difference]: Without dead ends: 303 [2022-03-03 19:12:06,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:06,057 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:06,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 48 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-03 19:12:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 230. [2022-03-03 19:12:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.890829694323144) internal successors, (662), 229 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 662 transitions. [2022-03-03 19:12:06,061 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 662 transitions. Word has length 18 [2022-03-03 19:12:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:06,061 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 662 transitions. [2022-03-03 19:12:06,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 662 transitions. [2022-03-03 19:12:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:06,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:06,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:06,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-03 19:12:06,061 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1478642185, now seen corresponding path program 1 times [2022-03-03 19:12:06,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:06,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943481617] [2022-03-03 19:12:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:06,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:06,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:06,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943481617] [2022-03-03 19:12:06,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943481617] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:06,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543079192] [2022-03-03 19:12:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:06,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:06,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:06,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 19:12:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:06,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:06,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:06,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543079192] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:06,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:06,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:12:06,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809002983] [2022-03-03 19:12:06,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:06,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:12:06,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:12:06,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:06,657 INFO L87 Difference]: Start difference. First operand 230 states and 662 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:06,867 INFO L93 Difference]: Finished difference Result 364 states and 1028 transitions. [2022-03-03 19:12:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:06,868 INFO L225 Difference]: With dead ends: 364 [2022-03-03 19:12:06,868 INFO L226 Difference]: Without dead ends: 345 [2022-03-03 19:12:06,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:06,868 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 98 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:06,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 90 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-03-03 19:12:06,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 254. [2022-03-03 19:12:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.9011857707509883) internal successors, (734), 253 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 734 transitions. [2022-03-03 19:12:06,872 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 734 transitions. Word has length 18 [2022-03-03 19:12:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:06,872 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 734 transitions. [2022-03-03 19:12:06,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 734 transitions. [2022-03-03 19:12:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:06,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:06,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:06,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:07,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-03 19:12:07,084 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -711139859, now seen corresponding path program 2 times [2022-03-03 19:12:07,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:07,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579839386] [2022-03-03 19:12:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:07,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:07,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579839386] [2022-03-03 19:12:07,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579839386] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:07,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123078795] [2022-03-03 19:12:07,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:07,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:07,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:07,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:07,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 19:12:07,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:07,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:07,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:07,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:07,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:07,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123078795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:07,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:07,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-03 19:12:07,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347035782] [2022-03-03 19:12:07,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:07,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:07,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:07,654 INFO L87 Difference]: Start difference. First operand 254 states and 734 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:07,896 INFO L93 Difference]: Finished difference Result 406 states and 1136 transitions. [2022-03-03 19:12:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:07,897 INFO L225 Difference]: With dead ends: 406 [2022-03-03 19:12:07,897 INFO L226 Difference]: Without dead ends: 387 [2022-03-03 19:12:07,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:07,897 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 158 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:07,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 121 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-03-03 19:12:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 260. [2022-03-03 19:12:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.9382239382239383) internal successors, (761), 259 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 761 transitions. [2022-03-03 19:12:07,901 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 761 transitions. Word has length 18 [2022-03-03 19:12:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:07,901 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 761 transitions. [2022-03-03 19:12:07,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 761 transitions. [2022-03-03 19:12:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:07,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:07,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:07,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:08,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-03-03 19:12:08,118 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:08,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash -688543311, now seen corresponding path program 3 times [2022-03-03 19:12:08,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:08,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909766614] [2022-03-03 19:12:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:08,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:08,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:08,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909766614] [2022-03-03 19:12:08,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909766614] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:08,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54529675] [2022-03-03 19:12:08,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:08,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:08,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:08,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:08,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 19:12:08,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:08,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:08,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:08,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:08,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:08,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54529675] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:08,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:08,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:12:08,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608792457] [2022-03-03 19:12:08,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:08,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:12:08,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:12:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:08,561 INFO L87 Difference]: Start difference. First operand 260 states and 761 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:08,745 INFO L93 Difference]: Finished difference Result 385 states and 1090 transitions. [2022-03-03 19:12:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:08,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:08,746 INFO L225 Difference]: With dead ends: 385 [2022-03-03 19:12:08,746 INFO L226 Difference]: Without dead ends: 366 [2022-03-03 19:12:08,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:08,746 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 103 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:08,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 88 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-03-03 19:12:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 257. [2022-03-03 19:12:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.91796875) internal successors, (747), 256 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 747 transitions. [2022-03-03 19:12:08,750 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 747 transitions. Word has length 18 [2022-03-03 19:12:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:08,751 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 747 transitions. [2022-03-03 19:12:08,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 747 transitions. [2022-03-03 19:12:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:08,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:08,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:08,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-03 19:12:08,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:08,959 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1253155655, now seen corresponding path program 4 times [2022-03-03 19:12:08,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:08,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564830509] [2022-03-03 19:12:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:09,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564830509] [2022-03-03 19:12:09,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564830509] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:09,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135962830] [2022-03-03 19:12:09,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:09,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:09,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:09,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:09,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 19:12:09,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:09,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:09,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:09,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135962830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:09,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:09,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:12:09,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257225892] [2022-03-03 19:12:09,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:09,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:12:09,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:12:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:09,469 INFO L87 Difference]: Start difference. First operand 257 states and 747 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:09,718 INFO L93 Difference]: Finished difference Result 396 states and 1123 transitions. [2022-03-03 19:12:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:09,719 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:09,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:09,719 INFO L225 Difference]: With dead ends: 396 [2022-03-03 19:12:09,719 INFO L226 Difference]: Without dead ends: 377 [2022-03-03 19:12:09,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:09,720 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:09,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 95 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-03 19:12:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 269. [2022-03-03 19:12:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 2.921641791044776) internal successors, (783), 268 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 783 transitions. [2022-03-03 19:12:09,735 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 783 transitions. Word has length 18 [2022-03-03 19:12:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:09,735 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 783 transitions. [2022-03-03 19:12:09,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 783 transitions. [2022-03-03 19:12:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:09,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:09,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:09,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:09,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:09,955 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1246369661, now seen corresponding path program 5 times [2022-03-03 19:12:09,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:09,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234957996] [2022-03-03 19:12:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:10,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234957996] [2022-03-03 19:12:10,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234957996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:10,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833529693] [2022-03-03 19:12:10,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:10,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:10,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:10,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 19:12:10,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:10,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:10,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:10,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833529693] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:10,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:10,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:12:10,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136457225] [2022-03-03 19:12:10,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:10,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:12:10,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:10,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:12:10,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:10,402 INFO L87 Difference]: Start difference. First operand 269 states and 783 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:10,596 INFO L93 Difference]: Finished difference Result 438 states and 1232 transitions. [2022-03-03 19:12:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:10,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:10,597 INFO L225 Difference]: With dead ends: 438 [2022-03-03 19:12:10,597 INFO L226 Difference]: Without dead ends: 419 [2022-03-03 19:12:10,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:10,597 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 106 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:10,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 100 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-03-03 19:12:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 273. [2022-03-03 19:12:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.952205882352941) internal successors, (803), 272 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 803 transitions. [2022-03-03 19:12:10,602 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 803 transitions. Word has length 18 [2022-03-03 19:12:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:10,602 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 803 transitions. [2022-03-03 19:12:10,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 803 transitions. [2022-03-03 19:12:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:10,602 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:10,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:10,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:10,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-03 19:12:10,815 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:10,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1223773113, now seen corresponding path program 6 times [2022-03-03 19:12:10,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:10,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824627391] [2022-03-03 19:12:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:10,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:10,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824627391] [2022-03-03 19:12:10,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824627391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:10,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799026454] [2022-03-03 19:12:10,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:10,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:10,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 19:12:10,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:10,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:10,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:10,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799026454] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:11,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:11,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-03-03 19:12:11,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144855540] [2022-03-03 19:12:11,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:11,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:12:11,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:12:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:11,268 INFO L87 Difference]: Start difference. First operand 273 states and 803 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:11,475 INFO L93 Difference]: Finished difference Result 409 states and 1166 transitions. [2022-03-03 19:12:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:11,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:11,476 INFO L225 Difference]: With dead ends: 409 [2022-03-03 19:12:11,476 INFO L226 Difference]: Without dead ends: 390 [2022-03-03 19:12:11,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:11,477 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:11,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 110 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:11,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-03 19:12:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 269. [2022-03-03 19:12:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 2.921641791044776) internal successors, (783), 268 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 783 transitions. [2022-03-03 19:12:11,481 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 783 transitions. Word has length 18 [2022-03-03 19:12:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:11,481 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 783 transitions. [2022-03-03 19:12:11,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 783 transitions. [2022-03-03 19:12:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:11,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:11,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:11,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-03 19:12:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-03 19:12:11,691 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -122015580, now seen corresponding path program 2 times [2022-03-03 19:12:11,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:11,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597206089] [2022-03-03 19:12:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:11,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597206089] [2022-03-03 19:12:11,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597206089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:11,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:11,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:12:11,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56277328] [2022-03-03 19:12:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:11,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:12:11,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:12:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:12:11,739 INFO L87 Difference]: Start difference. First operand 269 states and 783 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:11,837 INFO L93 Difference]: Finished difference Result 528 states and 1474 transitions. [2022-03-03 19:12:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:11,838 INFO L225 Difference]: With dead ends: 528 [2022-03-03 19:12:11,838 INFO L226 Difference]: Without dead ends: 457 [2022-03-03 19:12:11,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:11,839 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:11,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 50 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-03-03 19:12:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 287. [2022-03-03 19:12:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.972027972027972) internal successors, (850), 286 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 850 transitions. [2022-03-03 19:12:11,843 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 850 transitions. Word has length 18 [2022-03-03 19:12:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:11,843 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 850 transitions. [2022-03-03 19:12:11,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,843 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 850 transitions. [2022-03-03 19:12:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:11,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:11,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:11,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-03 19:12:11,844 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1432806821, now seen corresponding path program 7 times [2022-03-03 19:12:11,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:11,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484012527] [2022-03-03 19:12:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:11,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484012527] [2022-03-03 19:12:11,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484012527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:11,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882607865] [2022-03-03 19:12:11,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:11,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:11,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:11,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:11,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 19:12:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:11,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:11,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882607865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:12,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:12,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:12,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759737477] [2022-03-03 19:12:12,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:12,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:12,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:12,249 INFO L87 Difference]: Start difference. First operand 287 states and 850 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:12,468 INFO L93 Difference]: Finished difference Result 580 states and 1638 transitions. [2022-03-03 19:12:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:12,468 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:12,469 INFO L225 Difference]: With dead ends: 580 [2022-03-03 19:12:12,469 INFO L226 Difference]: Without dead ends: 561 [2022-03-03 19:12:12,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:12,470 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 118 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-03-03 19:12:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 294. [2022-03-03 19:12:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.9965870307167237) internal successors, (878), 293 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 878 transitions. [2022-03-03 19:12:12,474 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 878 transitions. Word has length 18 [2022-03-03 19:12:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:12,475 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 878 transitions. [2022-03-03 19:12:12,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 878 transitions. [2022-03-03 19:12:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:12,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:12,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:12,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:12,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:12,684 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash -756975223, now seen corresponding path program 8 times [2022-03-03 19:12:12,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:12,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334855220] [2022-03-03 19:12:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:12,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334855220] [2022-03-03 19:12:12,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334855220] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:12,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947158530] [2022-03-03 19:12:12,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:12,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:12,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:12,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:12,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 19:12:12,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:12,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:12,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:12,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:13,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947158530] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:13,157 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:13,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-03-03 19:12:13,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134261511] [2022-03-03 19:12:13,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:13,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:12:13,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:12:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:13,158 INFO L87 Difference]: Start difference. First operand 294 states and 878 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:13,343 INFO L93 Difference]: Finished difference Result 556 states and 1599 transitions. [2022-03-03 19:12:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:13,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:13,344 INFO L225 Difference]: With dead ends: 556 [2022-03-03 19:12:13,344 INFO L226 Difference]: Without dead ends: 537 [2022-03-03 19:12:13,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:13,344 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:13,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 97 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-03-03 19:12:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 298. [2022-03-03 19:12:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.0235690235690234) internal successors, (898), 297 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 898 transitions. [2022-03-03 19:12:13,349 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 898 transitions. Word has length 18 [2022-03-03 19:12:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:13,349 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 898 transitions. [2022-03-03 19:12:13,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 898 transitions. [2022-03-03 19:12:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:13,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:13,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:13,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:13,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-03-03 19:12:13,559 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -734378675, now seen corresponding path program 9 times [2022-03-03 19:12:13,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:13,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572280755] [2022-03-03 19:12:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:13,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:13,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572280755] [2022-03-03 19:12:13,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572280755] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:13,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564678850] [2022-03-03 19:12:13,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:13,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:13,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:13,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:13,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 19:12:13,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:13,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:13,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:13,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:13,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564678850] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:14,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:14,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:14,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402857427] [2022-03-03 19:12:14,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:14,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:14,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:14,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:14,074 INFO L87 Difference]: Start difference. First operand 298 states and 898 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:14,263 INFO L93 Difference]: Finished difference Result 566 states and 1624 transitions. [2022-03-03 19:12:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:14,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:14,264 INFO L225 Difference]: With dead ends: 566 [2022-03-03 19:12:14,264 INFO L226 Difference]: Without dead ends: 547 [2022-03-03 19:12:14,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:14,264 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 121 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:14,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 103 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-03 19:12:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 287. [2022-03-03 19:12:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.972027972027972) internal successors, (850), 286 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 850 transitions. [2022-03-03 19:12:14,269 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 850 transitions. Word has length 18 [2022-03-03 19:12:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:14,269 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 850 transitions. [2022-03-03 19:12:14,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 850 transitions. [2022-03-03 19:12:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:14,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:14,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:14,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:14,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:14,470 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash 303011209, now seen corresponding path program 10 times [2022-03-03 19:12:14,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:14,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205852441] [2022-03-03 19:12:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:14,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:14,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205852441] [2022-03-03 19:12:14,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205852441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:14,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240378148] [2022-03-03 19:12:14,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:14,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:14,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:14,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:14,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 19:12:14,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:14,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:14,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:14,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240378148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:14,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:14,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:12:14,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139728616] [2022-03-03 19:12:14,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:14,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:14,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:14,856 INFO L87 Difference]: Start difference. First operand 287 states and 850 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:15,097 INFO L93 Difference]: Finished difference Result 473 states and 1329 transitions. [2022-03-03 19:12:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:15,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:15,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:15,098 INFO L225 Difference]: With dead ends: 473 [2022-03-03 19:12:15,098 INFO L226 Difference]: Without dead ends: 454 [2022-03-03 19:12:15,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:15,098 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 119 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:15,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 127 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-03 19:12:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 291. [2022-03-03 19:12:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.9655172413793105) internal successors, (860), 290 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 860 transitions. [2022-03-03 19:12:15,103 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 860 transitions. Word has length 18 [2022-03-03 19:12:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:15,103 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 860 transitions. [2022-03-03 19:12:15,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 860 transitions. [2022-03-03 19:12:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:15,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:15,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:15,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:15,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-03-03 19:12:15,319 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:15,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1290665002, now seen corresponding path program 2 times [2022-03-03 19:12:15,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:15,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014013422] [2022-03-03 19:12:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:15,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:15,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:15,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014013422] [2022-03-03 19:12:15,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014013422] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:15,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693035483] [2022-03-03 19:12:15,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:15,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:15,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:15,384 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:15,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 19:12:15,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:15,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:15,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:15,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:15,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693035483] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:15,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:15,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-03-03 19:12:15,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397414363] [2022-03-03 19:12:15,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:15,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:15,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:15,624 INFO L87 Difference]: Start difference. First operand 291 states and 860 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:15,970 INFO L93 Difference]: Finished difference Result 726 states and 2026 transitions. [2022-03-03 19:12:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:12:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:15,971 INFO L225 Difference]: With dead ends: 726 [2022-03-03 19:12:15,971 INFO L226 Difference]: Without dead ends: 646 [2022-03-03 19:12:15,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:12:15,972 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 235 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:15,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 166 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-03-03 19:12:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 308. [2022-03-03 19:12:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.045602605863192) internal successors, (935), 307 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 935 transitions. [2022-03-03 19:12:15,989 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 935 transitions. Word has length 18 [2022-03-03 19:12:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:15,989 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 935 transitions. [2022-03-03 19:12:15,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,989 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 935 transitions. [2022-03-03 19:12:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:15,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:15,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:16,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:16,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-03-03 19:12:16,199 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -643487665, now seen corresponding path program 11 times [2022-03-03 19:12:16,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:16,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560115954] [2022-03-03 19:12:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:16,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560115954] [2022-03-03 19:12:16,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560115954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:16,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703669019] [2022-03-03 19:12:16,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:16,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:16,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:16,262 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:16,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 19:12:16,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:16,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:16,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703669019] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:16,599 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:16,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:16,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54313247] [2022-03-03 19:12:16,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:16,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:16,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:16,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:16,600 INFO L87 Difference]: Start difference. First operand 308 states and 935 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:16,738 INFO L93 Difference]: Finished difference Result 455 states and 1322 transitions. [2022-03-03 19:12:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:16,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:16,739 INFO L225 Difference]: With dead ends: 455 [2022-03-03 19:12:16,739 INFO L226 Difference]: Without dead ends: 432 [2022-03-03 19:12:16,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:16,740 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:16,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 65 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-03-03 19:12:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 316. [2022-03-03 19:12:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.0444444444444443) internal successors, (959), 315 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 959 transitions. [2022-03-03 19:12:16,744 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 959 transitions. Word has length 18 [2022-03-03 19:12:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:16,744 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 959 transitions. [2022-03-03 19:12:16,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 959 transitions. [2022-03-03 19:12:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:16,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:16,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:16,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:16,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:16,966 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -643460870, now seen corresponding path program 3 times [2022-03-03 19:12:16,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:16,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112498142] [2022-03-03 19:12:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:16,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:17,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:17,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112498142] [2022-03-03 19:12:17,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112498142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:17,029 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:17,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:17,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207851139] [2022-03-03 19:12:17,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:17,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:17,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:17,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:17,030 INFO L87 Difference]: Start difference. First operand 316 states and 959 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:17,230 INFO L93 Difference]: Finished difference Result 471 states and 1362 transitions. [2022-03-03 19:12:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:17,231 INFO L225 Difference]: With dead ends: 471 [2022-03-03 19:12:17,231 INFO L226 Difference]: Without dead ends: 442 [2022-03-03 19:12:17,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:17,231 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:17,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 82 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:17,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-03 19:12:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 316. [2022-03-03 19:12:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.038095238095238) internal successors, (957), 315 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 957 transitions. [2022-03-03 19:12:17,236 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 957 transitions. Word has length 18 [2022-03-03 19:12:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:17,236 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 957 transitions. [2022-03-03 19:12:17,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 957 transitions. [2022-03-03 19:12:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:17,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:17,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:17,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-03 19:12:17,237 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1235680749, now seen corresponding path program 12 times [2022-03-03 19:12:17,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:17,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996025465] [2022-03-03 19:12:17,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:17,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:17,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:17,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996025465] [2022-03-03 19:12:17,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996025465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:17,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727782885] [2022-03-03 19:12:17,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:17,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:17,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:17,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 19:12:17,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:17,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:17,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:17,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:17,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:17,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727782885] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:17,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:17,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-03 19:12:17,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435457405] [2022-03-03 19:12:17,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:17,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:17,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:17,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:17,750 INFO L87 Difference]: Start difference. First operand 316 states and 957 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:17,994 INFO L93 Difference]: Finished difference Result 439 states and 1290 transitions. [2022-03-03 19:12:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:17,995 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:17,995 INFO L225 Difference]: With dead ends: 439 [2022-03-03 19:12:17,995 INFO L226 Difference]: Without dead ends: 420 [2022-03-03 19:12:17,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:17,996 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:17,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 124 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-03 19:12:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 310. [2022-03-03 19:12:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.042071197411003) internal successors, (940), 309 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 940 transitions. [2022-03-03 19:12:18,000 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 940 transitions. Word has length 18 [2022-03-03 19:12:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:18,000 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 940 transitions. [2022-03-03 19:12:18,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 940 transitions. [2022-03-03 19:12:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:18,000 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:18,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:18,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:18,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-03-03 19:12:18,216 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash -34208214, now seen corresponding path program 3 times [2022-03-03 19:12:18,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:18,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936207768] [2022-03-03 19:12:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:18,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:18,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:18,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936207768] [2022-03-03 19:12:18,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936207768] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:18,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124949331] [2022-03-03 19:12:18,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:18,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:18,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:18,276 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:18,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 19:12:18,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:18,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:18,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:18,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:18,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:18,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124949331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:18,561 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:18,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-03-03 19:12:18,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504141711] [2022-03-03 19:12:18,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:18,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:18,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:18,562 INFO L87 Difference]: Start difference. First operand 310 states and 940 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:18,769 INFO L93 Difference]: Finished difference Result 512 states and 1459 transitions. [2022-03-03 19:12:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:12:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:18,770 INFO L225 Difference]: With dead ends: 512 [2022-03-03 19:12:18,771 INFO L226 Difference]: Without dead ends: 434 [2022-03-03 19:12:18,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:18,771 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 153 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:18,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 119 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-03 19:12:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 301. [2022-03-03 19:12:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.03) internal successors, (909), 300 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 909 transitions. [2022-03-03 19:12:18,775 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 909 transitions. Word has length 18 [2022-03-03 19:12:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:18,775 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 909 transitions. [2022-03-03 19:12:18,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 909 transitions. [2022-03-03 19:12:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:18,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:18,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:18,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:18,983 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1601323667, now seen corresponding path program 13 times [2022-03-03 19:12:18,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:18,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418464007] [2022-03-03 19:12:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:19,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:19,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418464007] [2022-03-03 19:12:19,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418464007] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:19,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137043512] [2022-03-03 19:12:19,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:19,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:19,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 19:12:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:19,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:19,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:19,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:19,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137043512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:19,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:19,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-03-03 19:12:19,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205046031] [2022-03-03 19:12:19,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:19,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:19,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:19,459 INFO L87 Difference]: Start difference. First operand 301 states and 909 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:19,680 INFO L93 Difference]: Finished difference Result 503 states and 1452 transitions. [2022-03-03 19:12:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:19,680 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:19,681 INFO L225 Difference]: With dead ends: 503 [2022-03-03 19:12:19,681 INFO L226 Difference]: Without dead ends: 484 [2022-03-03 19:12:19,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:19,681 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 128 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:19,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 107 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-03-03 19:12:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 307. [2022-03-03 19:12:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.0620915032679736) internal successors, (937), 306 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 937 transitions. [2022-03-03 19:12:19,685 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 937 transitions. Word has length 18 [2022-03-03 19:12:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:19,685 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 937 transitions. [2022-03-03 19:12:19,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 937 transitions. [2022-03-03 19:12:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:19,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:19,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:19,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:19,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-03 19:12:19,895 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1762543607, now seen corresponding path program 14 times [2022-03-03 19:12:19,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:19,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885582936] [2022-03-03 19:12:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:19,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:19,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885582936] [2022-03-03 19:12:19,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885582936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:19,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176727941] [2022-03-03 19:12:19,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:19,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:19,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:19,955 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:19,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 19:12:20,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:20,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:20,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:20,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:20,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176727941] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:20,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:20,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:12:20,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604015435] [2022-03-03 19:12:20,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:20,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:20,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:20,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:20,430 INFO L87 Difference]: Start difference. First operand 307 states and 937 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:20,637 INFO L93 Difference]: Finished difference Result 491 states and 1412 transitions. [2022-03-03 19:12:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:20,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:20,638 INFO L225 Difference]: With dead ends: 491 [2022-03-03 19:12:20,638 INFO L226 Difference]: Without dead ends: 468 [2022-03-03 19:12:20,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:20,638 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:20,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 61 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-03-03 19:12:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 311. [2022-03-03 19:12:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 3.041935483870968) internal successors, (943), 310 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 943 transitions. [2022-03-03 19:12:20,643 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 943 transitions. Word has length 18 [2022-03-03 19:12:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:20,643 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 943 transitions. [2022-03-03 19:12:20,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 943 transitions. [2022-03-03 19:12:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:20,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:20,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:20,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:20,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-03-03 19:12:20,853 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1575573672, now seen corresponding path program 4 times [2022-03-03 19:12:20,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:20,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131751539] [2022-03-03 19:12:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:20,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:20,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:20,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131751539] [2022-03-03 19:12:20,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131751539] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:20,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:20,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:12:20,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466885600] [2022-03-03 19:12:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:20,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:12:20,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:12:20,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:12:20,915 INFO L87 Difference]: Start difference. First operand 311 states and 943 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:21,048 INFO L93 Difference]: Finished difference Result 521 states and 1488 transitions. [2022-03-03 19:12:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:21,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:21,049 INFO L225 Difference]: With dead ends: 521 [2022-03-03 19:12:21,049 INFO L226 Difference]: Without dead ends: 459 [2022-03-03 19:12:21,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:21,049 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:21,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 59 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-03 19:12:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 303. [2022-03-03 19:12:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 3.019867549668874) internal successors, (912), 302 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 912 transitions. [2022-03-03 19:12:21,054 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 912 transitions. Word has length 18 [2022-03-03 19:12:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:21,054 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 912 transitions. [2022-03-03 19:12:21,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 912 transitions. [2022-03-03 19:12:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:21,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:21,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:21,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-03-03 19:12:21,055 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash 531772977, now seen corresponding path program 15 times [2022-03-03 19:12:21,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:21,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896557677] [2022-03-03 19:12:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:21,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:21,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:21,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896557677] [2022-03-03 19:12:21,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896557677] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:21,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352644377] [2022-03-03 19:12:21,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:21,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:21,172 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:21,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 19:12:21,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:21,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:21,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:21,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:21,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:21,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352644377] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:21,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:21,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-03-03 19:12:21,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219230662] [2022-03-03 19:12:21,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:21,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 19:12:21,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 19:12:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:21,834 INFO L87 Difference]: Start difference. First operand 303 states and 912 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:22,141 INFO L93 Difference]: Finished difference Result 503 states and 1430 transitions. [2022-03-03 19:12:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:22,142 INFO L225 Difference]: With dead ends: 503 [2022-03-03 19:12:22,142 INFO L226 Difference]: Without dead ends: 484 [2022-03-03 19:12:22,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:22,142 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:22,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 157 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-03-03 19:12:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 300. [2022-03-03 19:12:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.040133779264214) internal successors, (909), 299 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 909 transitions. [2022-03-03 19:12:22,147 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 909 transitions. Word has length 18 [2022-03-03 19:12:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:22,147 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 909 transitions. [2022-03-03 19:12:22,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 909 transitions. [2022-03-03 19:12:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:22,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:22,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:22,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:22,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:22,355 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1616987215, now seen corresponding path program 16 times [2022-03-03 19:12:22,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:22,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034482504] [2022-03-03 19:12:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:22,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:22,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:22,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034482504] [2022-03-03 19:12:22,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034482504] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:22,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598766686] [2022-03-03 19:12:22,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:22,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:22,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:22,414 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:22,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 19:12:22,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:22,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:22,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:22,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:22,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:22,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598766686] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:22,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:22,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:22,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55938678] [2022-03-03 19:12:22,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:22,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:22,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:22,812 INFO L87 Difference]: Start difference. First operand 300 states and 909 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:22,945 INFO L93 Difference]: Finished difference Result 484 states and 1401 transitions. [2022-03-03 19:12:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:22,946 INFO L225 Difference]: With dead ends: 484 [2022-03-03 19:12:22,946 INFO L226 Difference]: Without dead ends: 465 [2022-03-03 19:12:22,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:22,947 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:22,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 106 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-03-03 19:12:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 296. [2022-03-03 19:12:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.013559322033898) internal successors, (889), 295 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 889 transitions. [2022-03-03 19:12:22,951 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 889 transitions. Word has length 18 [2022-03-03 19:12:22,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:22,951 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 889 transitions. [2022-03-03 19:12:22,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 889 transitions. [2022-03-03 19:12:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:22,951 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:22,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:22,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:23,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,166 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1672937933, now seen corresponding path program 17 times [2022-03-03 19:12:23,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:23,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878125505] [2022-03-03 19:12:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:23,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:23,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878125505] [2022-03-03 19:12:23,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878125505] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922915086] [2022-03-03 19:12:23,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:23,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:23,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 19:12:23,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:23,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:23,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:23,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:23,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:23,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922915086] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:23,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:12:23,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131480594] [2022-03-03 19:12:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:23,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:23,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:23,645 INFO L87 Difference]: Start difference. First operand 296 states and 889 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:23,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:23,875 INFO L93 Difference]: Finished difference Result 450 states and 1288 transitions. [2022-03-03 19:12:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:23,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:23,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:23,876 INFO L225 Difference]: With dead ends: 450 [2022-03-03 19:12:23,876 INFO L226 Difference]: Without dead ends: 427 [2022-03-03 19:12:23,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:23,876 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:23,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 68 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-03 19:12:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 304. [2022-03-03 19:12:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.0066006600660065) internal successors, (911), 303 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 911 transitions. [2022-03-03 19:12:23,880 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 911 transitions. Word has length 18 [2022-03-03 19:12:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:23,880 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 911 transitions. [2022-03-03 19:12:23,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 911 transitions. [2022-03-03 19:12:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:23,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:23,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:23,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:24,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:24,081 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash 494821513, now seen corresponding path program 18 times [2022-03-03 19:12:24,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:24,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758645784] [2022-03-03 19:12:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:24,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:24,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758645784] [2022-03-03 19:12:24,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758645784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:24,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307306600] [2022-03-03 19:12:24,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:24,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:24,144 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:24,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 19:12:24,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:24,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:24,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:24,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:24,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:24,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307306600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:24,569 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:24,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-03 19:12:24,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967911084] [2022-03-03 19:12:24,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:24,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:24,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:24,570 INFO L87 Difference]: Start difference. First operand 304 states and 911 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:24,793 INFO L93 Difference]: Finished difference Result 434 states and 1258 transitions. [2022-03-03 19:12:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:24,794 INFO L225 Difference]: With dead ends: 434 [2022-03-03 19:12:24,794 INFO L226 Difference]: Without dead ends: 415 [2022-03-03 19:12:24,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:24,795 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 100 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:24,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 102 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-03 19:12:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 296. [2022-03-03 19:12:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.013559322033898) internal successors, (889), 295 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 889 transitions. [2022-03-03 19:12:24,799 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 889 transitions. Word has length 18 [2022-03-03 19:12:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:24,799 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 889 transitions. [2022-03-03 19:12:24,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 889 transitions. [2022-03-03 19:12:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:24,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:24,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:24,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:25,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-03-03 19:12:25,018 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash 848157667, now seen corresponding path program 19 times [2022-03-03 19:12:25,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:25,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387628290] [2022-03-03 19:12:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:25,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:25,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387628290] [2022-03-03 19:12:25,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387628290] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:25,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888677424] [2022-03-03 19:12:25,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:25,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:25,108 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:25,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 19:12:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:25,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:25,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:25,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:25,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888677424] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:25,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:25,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:12:25,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962686538] [2022-03-03 19:12:25,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:25,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:25,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:25,471 INFO L87 Difference]: Start difference. First operand 296 states and 889 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:25,704 INFO L93 Difference]: Finished difference Result 468 states and 1339 transitions. [2022-03-03 19:12:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:25,705 INFO L225 Difference]: With dead ends: 468 [2022-03-03 19:12:25,705 INFO L226 Difference]: Without dead ends: 449 [2022-03-03 19:12:25,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:25,705 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 136 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:25,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 99 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-03 19:12:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 302. [2022-03-03 19:12:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.0232558139534884) internal successors, (910), 301 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 910 transitions. [2022-03-03 19:12:25,710 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 910 transitions. Word has length 18 [2022-03-03 19:12:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:25,710 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 910 transitions. [2022-03-03 19:12:25,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 910 transitions. [2022-03-03 19:12:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:25,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:25,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:25,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:25,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:25,917 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1219249607, now seen corresponding path program 20 times [2022-03-03 19:12:25,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:25,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992013207] [2022-03-03 19:12:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:25,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:25,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992013207] [2022-03-03 19:12:25,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992013207] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:25,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260109926] [2022-03-03 19:12:25,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:25,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:25,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:25,992 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:25,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 19:12:26,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:26,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:26,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:26,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:26,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:26,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260109926] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:26,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:26,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-03-03 19:12:26,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142652876] [2022-03-03 19:12:26,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:12:26,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:12:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:26,352 INFO L87 Difference]: Start difference. First operand 302 states and 910 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:26,624 INFO L93 Difference]: Finished difference Result 479 states and 1352 transitions. [2022-03-03 19:12:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:26,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:26,625 INFO L225 Difference]: With dead ends: 479 [2022-03-03 19:12:26,625 INFO L226 Difference]: Without dead ends: 460 [2022-03-03 19:12:26,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:26,626 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 162 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:26,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 102 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-03-03 19:12:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 306. [2022-03-03 19:12:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.036065573770492) internal successors, (926), 305 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 926 transitions. [2022-03-03 19:12:26,630 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 926 transitions. Word has length 18 [2022-03-03 19:12:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:26,630 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 926 transitions. [2022-03-03 19:12:26,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 926 transitions. [2022-03-03 19:12:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:26,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:26,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:26,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:26,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:26,839 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1058029667, now seen corresponding path program 21 times [2022-03-03 19:12:26,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:26,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787388154] [2022-03-03 19:12:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:26,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:26,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:26,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787388154] [2022-03-03 19:12:26,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787388154] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:26,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407057098] [2022-03-03 19:12:26,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:26,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:26,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:26,920 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:26,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 19:12:26,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:26,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:26,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:26,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:27,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:27,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407057098] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:27,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:27,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:27,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871720769] [2022-03-03 19:12:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:27,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:27,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:27,412 INFO L87 Difference]: Start difference. First operand 306 states and 926 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:27,587 INFO L93 Difference]: Finished difference Result 442 states and 1266 transitions. [2022-03-03 19:12:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:27,588 INFO L225 Difference]: With dead ends: 442 [2022-03-03 19:12:27,588 INFO L226 Difference]: Without dead ends: 419 [2022-03-03 19:12:27,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:27,589 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 87 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:27,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 53 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-03-03 19:12:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 308. [2022-03-03 19:12:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.019543973941368) internal successors, (927), 307 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 927 transitions. [2022-03-03 19:12:27,592 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 927 transitions. Word has length 18 [2022-03-03 19:12:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:27,593 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 927 transitions. [2022-03-03 19:12:27,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 927 transitions. [2022-03-03 19:12:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:27,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:27,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:27,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-03 19:12:27,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:27,807 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1745323105, now seen corresponding path program 22 times [2022-03-03 19:12:27,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:27,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183046509] [2022-03-03 19:12:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:27,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:27,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183046509] [2022-03-03 19:12:27,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183046509] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:27,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654073923] [2022-03-03 19:12:27,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:27,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:27,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:27,868 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:27,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 19:12:27,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:27,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:27,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:27,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:28,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:28,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654073923] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:28,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:28,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-03-03 19:12:28,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367360904] [2022-03-03 19:12:28,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:28,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:28,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:28,222 INFO L87 Difference]: Start difference. First operand 308 states and 927 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:28,465 INFO L93 Difference]: Finished difference Result 535 states and 1530 transitions. [2022-03-03 19:12:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:28,466 INFO L225 Difference]: With dead ends: 535 [2022-03-03 19:12:28,466 INFO L226 Difference]: Without dead ends: 516 [2022-03-03 19:12:28,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:28,467 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 111 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:28,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 129 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-03-03 19:12:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 303. [2022-03-03 19:12:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 3.0264900662251657) internal successors, (914), 302 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 914 transitions. [2022-03-03 19:12:28,471 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 914 transitions. Word has length 18 [2022-03-03 19:12:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:28,471 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 914 transitions. [2022-03-03 19:12:28,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 914 transitions. [2022-03-03 19:12:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:28,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:28,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:28,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:28,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-03 19:12:28,672 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1457536671, now seen corresponding path program 23 times [2022-03-03 19:12:28,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:28,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869869941] [2022-03-03 19:12:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:28,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:28,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869869941] [2022-03-03 19:12:28,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869869941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:28,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119923590] [2022-03-03 19:12:28,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:28,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:28,745 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:28,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 19:12:28,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:28,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:28,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:28,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:28,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:29,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119923590] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:29,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:29,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:29,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618129553] [2022-03-03 19:12:29,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:29,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:29,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:29,140 INFO L87 Difference]: Start difference. First operand 303 states and 914 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:29,343 INFO L93 Difference]: Finished difference Result 537 states and 1559 transitions. [2022-03-03 19:12:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:29,345 INFO L225 Difference]: With dead ends: 537 [2022-03-03 19:12:29,345 INFO L226 Difference]: Without dead ends: 518 [2022-03-03 19:12:29,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:29,345 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:29,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 115 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-03-03 19:12:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 307. [2022-03-03 19:12:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.052287581699346) internal successors, (934), 306 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 934 transitions. [2022-03-03 19:12:29,351 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 934 transitions. Word has length 18 [2022-03-03 19:12:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:29,351 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 934 transitions. [2022-03-03 19:12:29,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 934 transitions. [2022-03-03 19:12:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:29,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:29,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:29,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:29,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-03 19:12:29,570 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1480133219, now seen corresponding path program 24 times [2022-03-03 19:12:29,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:29,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985846753] [2022-03-03 19:12:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:29,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:29,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985846753] [2022-03-03 19:12:29,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985846753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:29,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152570302] [2022-03-03 19:12:29,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:29,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:29,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:29,640 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:29,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 19:12:29,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:29,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:29,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:29,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:29,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:30,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152570302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:30,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:30,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-03-03 19:12:30,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763315948] [2022-03-03 19:12:30,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:30,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:12:30,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:12:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:30,055 INFO L87 Difference]: Start difference. First operand 307 states and 934 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:30,233 INFO L93 Difference]: Finished difference Result 500 states and 1473 transitions. [2022-03-03 19:12:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:30,234 INFO L225 Difference]: With dead ends: 500 [2022-03-03 19:12:30,234 INFO L226 Difference]: Without dead ends: 481 [2022-03-03 19:12:30,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:30,235 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:30,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 75 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-03 19:12:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 299. [2022-03-03 19:12:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 3.0134228187919465) internal successors, (898), 298 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 898 transitions. [2022-03-03 19:12:30,239 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 898 transitions. Word has length 18 [2022-03-03 19:12:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:30,239 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 898 transitions. [2022-03-03 19:12:30,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 898 transitions. [2022-03-03 19:12:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:30,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:30,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:30,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:30,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-03 19:12:30,451 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1632865539, now seen corresponding path program 25 times [2022-03-03 19:12:30,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:30,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534970435] [2022-03-03 19:12:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:30,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:30,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:30,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534970435] [2022-03-03 19:12:30,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534970435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:30,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759704227] [2022-03-03 19:12:30,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:30,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:30,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:30,529 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:30,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 19:12:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:30,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:30,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:30,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:30,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759704227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:30,945 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:30,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:12:30,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362046629] [2022-03-03 19:12:30,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:30,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:30,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:30,946 INFO L87 Difference]: Start difference. First operand 299 states and 898 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:31,186 INFO L93 Difference]: Finished difference Result 506 states and 1446 transitions. [2022-03-03 19:12:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:31,187 INFO L225 Difference]: With dead ends: 506 [2022-03-03 19:12:31,187 INFO L226 Difference]: Without dead ends: 487 [2022-03-03 19:12:31,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:31,188 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 136 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:31,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 108 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-03-03 19:12:31,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 305. [2022-03-03 19:12:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 3.0427631578947367) internal successors, (925), 304 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 925 transitions. [2022-03-03 19:12:31,192 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 925 transitions. Word has length 18 [2022-03-03 19:12:31,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:31,192 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 925 transitions. [2022-03-03 19:12:31,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 925 transitions. [2022-03-03 19:12:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:31,193 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:31,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:31,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:31,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-03 19:12:31,403 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:31,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1471645599, now seen corresponding path program 26 times [2022-03-03 19:12:31,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:31,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893452642] [2022-03-03 19:12:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:31,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:31,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893452642] [2022-03-03 19:12:31,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893452642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:31,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800857407] [2022-03-03 19:12:31,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:31,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:31,467 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:31,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 19:12:31,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:31,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:31,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:31,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800857407] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:31,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:31,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:12:31,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136847917] [2022-03-03 19:12:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:31,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:31,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:31,953 INFO L87 Difference]: Start difference. First operand 305 states and 925 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:32,178 INFO L93 Difference]: Finished difference Result 494 states and 1406 transitions. [2022-03-03 19:12:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:32,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:32,180 INFO L225 Difference]: With dead ends: 494 [2022-03-03 19:12:32,180 INFO L226 Difference]: Without dead ends: 471 [2022-03-03 19:12:32,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:32,180 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:32,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 61 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-03-03 19:12:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 307. [2022-03-03 19:12:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.026143790849673) internal successors, (926), 306 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 926 transitions. [2022-03-03 19:12:32,185 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 926 transitions. Word has length 18 [2022-03-03 19:12:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:32,185 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 926 transitions. [2022-03-03 19:12:32,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 926 transitions. [2022-03-03 19:12:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:32,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:32,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:32,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 19:12:32,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:32,388 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash -529005113, now seen corresponding path program 27 times [2022-03-03 19:12:32,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:32,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590618524] [2022-03-03 19:12:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:32,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:32,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:32,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590618524] [2022-03-03 19:12:32,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590618524] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:32,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773382523] [2022-03-03 19:12:32,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:32,472 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:32,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:32,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:32,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 19:12:32,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:32,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:32,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:32,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773382523] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:32,996 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:32,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-03-03 19:12:32,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999319142] [2022-03-03 19:12:32,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:32,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:12:32,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:12:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:32,997 INFO L87 Difference]: Start difference. First operand 307 states and 926 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:33,298 INFO L93 Difference]: Finished difference Result 509 states and 1449 transitions. [2022-03-03 19:12:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:33,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:33,299 INFO L225 Difference]: With dead ends: 509 [2022-03-03 19:12:33,299 INFO L226 Difference]: Without dead ends: 490 [2022-03-03 19:12:33,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:33,299 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 185 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:33,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 151 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-03-03 19:12:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 304. [2022-03-03 19:12:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.046204620462046) internal successors, (923), 303 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 923 transitions. [2022-03-03 19:12:33,304 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 923 transitions. Word has length 18 [2022-03-03 19:12:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:33,304 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 923 transitions. [2022-03-03 19:12:33,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 923 transitions. [2022-03-03 19:12:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:33,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:33,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:33,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:33,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:33,522 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1617201991, now seen corresponding path program 28 times [2022-03-03 19:12:33,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:33,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810869951] [2022-03-03 19:12:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:33,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:33,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:33,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810869951] [2022-03-03 19:12:33,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810869951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:33,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741647473] [2022-03-03 19:12:33,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:33,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:33,582 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:33,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 19:12:33,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:33,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:33,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:33,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:33,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:34,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741647473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:34,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:34,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:12:34,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433550985] [2022-03-03 19:12:34,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:34,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:12:34,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:12:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:34,006 INFO L87 Difference]: Start difference. First operand 304 states and 923 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:34,193 INFO L93 Difference]: Finished difference Result 490 states and 1420 transitions. [2022-03-03 19:12:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:34,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:34,194 INFO L225 Difference]: With dead ends: 490 [2022-03-03 19:12:34,194 INFO L226 Difference]: Without dead ends: 471 [2022-03-03 19:12:34,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:34,194 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:34,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 103 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-03-03 19:12:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 300. [2022-03-03 19:12:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.020066889632107) internal successors, (903), 299 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 903 transitions. [2022-03-03 19:12:34,199 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 903 transitions. Word has length 18 [2022-03-03 19:12:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:34,199 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 903 transitions. [2022-03-03 19:12:34,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 903 transitions. [2022-03-03 19:12:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:34,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:34,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:34,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-03-03 19:12:34,407 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 612159843, now seen corresponding path program 29 times [2022-03-03 19:12:34,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:34,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058860953] [2022-03-03 19:12:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:34,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:34,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058860953] [2022-03-03 19:12:34,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058860953] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:34,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435106688] [2022-03-03 19:12:34,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:34,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:34,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:34,469 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:34,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 19:12:34,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:34,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:34,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:34,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435106688] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:34,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:34,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:12:34,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919132460] [2022-03-03 19:12:34,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:34,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:34,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:34,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:34,958 INFO L87 Difference]: Start difference. First operand 300 states and 903 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:35,191 INFO L93 Difference]: Finished difference Result 447 states and 1285 transitions. [2022-03-03 19:12:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:35,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:35,192 INFO L225 Difference]: With dead ends: 447 [2022-03-03 19:12:35,192 INFO L226 Difference]: Without dead ends: 424 [2022-03-03 19:12:35,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:35,193 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:35,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 61 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-03-03 19:12:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 308. [2022-03-03 19:12:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.013029315960912) internal successors, (925), 307 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 925 transitions. [2022-03-03 19:12:35,197 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 925 transitions. Word has length 18 [2022-03-03 19:12:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:35,197 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 925 transitions. [2022-03-03 19:12:35,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 925 transitions. [2022-03-03 19:12:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:35,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:35,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:35,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:35,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:35,407 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:35,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash -565956577, now seen corresponding path program 30 times [2022-03-03 19:12:35,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:35,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745181926] [2022-03-03 19:12:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:35,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:35,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745181926] [2022-03-03 19:12:35,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745181926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:35,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302368816] [2022-03-03 19:12:35,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:35,496 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:35,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 19:12:35,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:35,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:35,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:35,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:35,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:35,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302368816] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:35,939 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:35,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-03 19:12:35,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188421218] [2022-03-03 19:12:35,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:35,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:35,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:35,940 INFO L87 Difference]: Start difference. First operand 308 states and 925 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:36,182 INFO L93 Difference]: Finished difference Result 431 states and 1255 transitions. [2022-03-03 19:12:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:36,182 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:36,183 INFO L225 Difference]: With dead ends: 431 [2022-03-03 19:12:36,183 INFO L226 Difference]: Without dead ends: 412 [2022-03-03 19:12:36,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:36,184 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:36,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 111 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-03-03 19:12:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 299. [2022-03-03 19:12:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 3.0134228187919465) internal successors, (898), 298 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 898 transitions. [2022-03-03 19:12:36,188 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 898 transitions. Word has length 18 [2022-03-03 19:12:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:36,188 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 898 transitions. [2022-03-03 19:12:36,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 898 transitions. [2022-03-03 19:12:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:36,188 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:36,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:36,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:36,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:36,399 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1009718582, now seen corresponding path program 4 times [2022-03-03 19:12:36,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:36,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114857892] [2022-03-03 19:12:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:36,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:36,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114857892] [2022-03-03 19:12:36,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114857892] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:36,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:36,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:12:36,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065102942] [2022-03-03 19:12:36,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:36,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:12:36,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:12:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:12:36,442 INFO L87 Difference]: Start difference. First operand 299 states and 898 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:36,541 INFO L93 Difference]: Finished difference Result 429 states and 1249 transitions. [2022-03-03 19:12:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:36,542 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:12:36,542 INFO L226 Difference]: Without dead ends: 358 [2022-03-03 19:12:36,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:36,542 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:36,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 46 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-03-03 19:12:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 294. [2022-03-03 19:12:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0) internal successors, (879), 293 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 879 transitions. [2022-03-03 19:12:36,546 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 879 transitions. Word has length 18 [2022-03-03 19:12:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:36,546 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 879 transitions. [2022-03-03 19:12:36,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 879 transitions. [2022-03-03 19:12:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:36,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:36,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:36,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-03 19:12:36,547 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash 545103819, now seen corresponding path program 31 times [2022-03-03 19:12:36,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:36,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775034151] [2022-03-03 19:12:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:36,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:36,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:36,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775034151] [2022-03-03 19:12:36,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775034151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:36,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953520853] [2022-03-03 19:12:36,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:36,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:36,605 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:36,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 19:12:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:36,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:36,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:37,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953520853] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:37,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:37,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:37,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968262580] [2022-03-03 19:12:37,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:37,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:37,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:37,016 INFO L87 Difference]: Start difference. First operand 294 states and 879 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:37,216 INFO L93 Difference]: Finished difference Result 567 states and 1606 transitions. [2022-03-03 19:12:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:37,217 INFO L225 Difference]: With dead ends: 567 [2022-03-03 19:12:37,217 INFO L226 Difference]: Without dead ends: 548 [2022-03-03 19:12:37,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:37,217 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 116 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:37,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 102 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-03-03 19:12:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 301. [2022-03-03 19:12:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.0233333333333334) internal successors, (907), 300 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 907 transitions. [2022-03-03 19:12:37,222 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 907 transitions. Word has length 18 [2022-03-03 19:12:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:37,222 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 907 transitions. [2022-03-03 19:12:37,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 907 transitions. [2022-03-03 19:12:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:37,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:37,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:37,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:37,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-03-03 19:12:37,427 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:37,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1644678225, now seen corresponding path program 32 times [2022-03-03 19:12:37,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:37,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738162054] [2022-03-03 19:12:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:37,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:37,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738162054] [2022-03-03 19:12:37,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738162054] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:37,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620513811] [2022-03-03 19:12:37,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:37,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:37,476 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:37,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 19:12:37,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:37,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:37,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:37,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:37,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:37,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620513811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:37,752 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:37,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-03-03 19:12:37,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445261678] [2022-03-03 19:12:37,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:37,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:12:37,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:12:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:37,753 INFO L87 Difference]: Start difference. First operand 301 states and 907 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:37,886 INFO L93 Difference]: Finished difference Result 579 states and 1645 transitions. [2022-03-03 19:12:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:37,886 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:37,887 INFO L225 Difference]: With dead ends: 579 [2022-03-03 19:12:37,887 INFO L226 Difference]: Without dead ends: 560 [2022-03-03 19:12:37,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:37,887 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:37,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 110 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-03-03 19:12:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 305. [2022-03-03 19:12:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 3.049342105263158) internal successors, (927), 304 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 927 transitions. [2022-03-03 19:12:37,892 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 927 transitions. Word has length 18 [2022-03-03 19:12:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:37,892 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 927 transitions. [2022-03-03 19:12:37,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 927 transitions. [2022-03-03 19:12:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:37,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:37,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:37,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:38,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-03 19:12:38,114 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1622081677, now seen corresponding path program 33 times [2022-03-03 19:12:38,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:38,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785164959] [2022-03-03 19:12:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:38,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:38,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785164959] [2022-03-03 19:12:38,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785164959] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:38,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654246573] [2022-03-03 19:12:38,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:38,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:38,192 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:38,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 19:12:38,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:38,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:38,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:38,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:38,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:38,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654246573] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:38,688 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:38,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:38,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955665541] [2022-03-03 19:12:38,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:38,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:38,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:38,689 INFO L87 Difference]: Start difference. First operand 305 states and 927 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:38,893 INFO L93 Difference]: Finished difference Result 588 states and 1668 transitions. [2022-03-03 19:12:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:38,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:38,894 INFO L225 Difference]: With dead ends: 588 [2022-03-03 19:12:38,894 INFO L226 Difference]: Without dead ends: 569 [2022-03-03 19:12:38,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:38,895 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:38,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 110 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-03-03 19:12:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 294. [2022-03-03 19:12:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0) internal successors, (879), 293 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 879 transitions. [2022-03-03 19:12:38,901 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 879 transitions. Word has length 18 [2022-03-03 19:12:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:38,901 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 879 transitions. [2022-03-03 19:12:38,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 879 transitions. [2022-03-03 19:12:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:38,901 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:38,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:38,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-03 19:12:39,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-03-03 19:12:39,112 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash -584691793, now seen corresponding path program 34 times [2022-03-03 19:12:39,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:39,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491626500] [2022-03-03 19:12:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:39,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:39,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491626500] [2022-03-03 19:12:39,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491626500] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:39,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279971963] [2022-03-03 19:12:39,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:39,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:39,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:39,166 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:39,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 19:12:39,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:39,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:39,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:39,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:39,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:39,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279971963] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:39,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:39,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:12:39,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004614303] [2022-03-03 19:12:39,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:39,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:39,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:39,404 INFO L87 Difference]: Start difference. First operand 294 states and 879 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:39,601 INFO L93 Difference]: Finished difference Result 648 states and 1820 transitions. [2022-03-03 19:12:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:39,602 INFO L225 Difference]: With dead ends: 648 [2022-03-03 19:12:39,602 INFO L226 Difference]: Without dead ends: 629 [2022-03-03 19:12:39,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:39,603 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 127 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:39,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 147 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-03-03 19:12:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 298. [2022-03-03 19:12:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.993265993265993) internal successors, (889), 297 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 889 transitions. [2022-03-03 19:12:39,609 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 889 transitions. Word has length 18 [2022-03-03 19:12:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:39,609 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 889 transitions. [2022-03-03 19:12:39,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 889 transitions. [2022-03-03 19:12:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:39,610 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:39,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:39,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:39,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-03-03 19:12:39,824 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:39,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1531190667, now seen corresponding path program 35 times [2022-03-03 19:12:39,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:39,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553131298] [2022-03-03 19:12:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:39,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:39,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:39,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553131298] [2022-03-03 19:12:39,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553131298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:39,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440443087] [2022-03-03 19:12:39,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:39,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:39,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:39,883 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:39,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 19:12:39,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:39,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:39,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:39,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:40,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:40,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440443087] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:40,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:40,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:40,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181617048] [2022-03-03 19:12:40,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:40,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:40,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:40,359 INFO L87 Difference]: Start difference. First operand 298 states and 889 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:40,546 INFO L93 Difference]: Finished difference Result 606 states and 1708 transitions. [2022-03-03 19:12:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:40,548 INFO L225 Difference]: With dead ends: 606 [2022-03-03 19:12:40,548 INFO L226 Difference]: Without dead ends: 583 [2022-03-03 19:12:40,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:40,548 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:40,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 63 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-03 19:12:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 306. [2022-03-03 19:12:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.9868852459016395) internal successors, (911), 305 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 911 transitions. [2022-03-03 19:12:40,553 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 911 transitions. Word has length 18 [2022-03-03 19:12:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:40,553 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 911 transitions. [2022-03-03 19:12:40,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 911 transitions. [2022-03-03 19:12:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:40,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:40,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:40,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 19:12:40,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-03 19:12:40,763 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2123383751, now seen corresponding path program 36 times [2022-03-03 19:12:40,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:40,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852747693] [2022-03-03 19:12:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:40,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:40,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852747693] [2022-03-03 19:12:40,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852747693] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:40,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862150970] [2022-03-03 19:12:40,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:40,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:40,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:40,840 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:40,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 19:12:40,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:40,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:40,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:40,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:41,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862150970] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:41,260 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:41,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-03 19:12:41,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701362890] [2022-03-03 19:12:41,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:41,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:41,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:41,261 INFO L87 Difference]: Start difference. First operand 306 states and 911 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:41,507 INFO L93 Difference]: Finished difference Result 590 states and 1678 transitions. [2022-03-03 19:12:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:41,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:41,508 INFO L225 Difference]: With dead ends: 590 [2022-03-03 19:12:41,508 INFO L226 Difference]: Without dead ends: 571 [2022-03-03 19:12:41,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:41,508 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:41,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 137 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-03-03 19:12:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 294. [2022-03-03 19:12:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0) internal successors, (879), 293 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 879 transitions. [2022-03-03 19:12:41,512 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 879 transitions. Word has length 18 [2022-03-03 19:12:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:41,513 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 879 transitions. [2022-03-03 19:12:41,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 879 transitions. [2022-03-03 19:12:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:41,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:41,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:41,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-03-03 19:12:41,728 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash -921911216, now seen corresponding path program 5 times [2022-03-03 19:12:41,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:41,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869332747] [2022-03-03 19:12:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:41,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:41,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869332747] [2022-03-03 19:12:41,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869332747] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:41,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446523818] [2022-03-03 19:12:41,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:41,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:41,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:41,770 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:41,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 19:12:41,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:41,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:41,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:41,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:41,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:41,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446523818] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:41,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:41,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-03-03 19:12:41,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297790311] [2022-03-03 19:12:41,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:41,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:12:41,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:41,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:12:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:41,910 INFO L87 Difference]: Start difference. First operand 294 states and 879 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:41,996 INFO L93 Difference]: Finished difference Result 448 states and 1287 transitions. [2022-03-03 19:12:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:41,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:41,997 INFO L225 Difference]: With dead ends: 448 [2022-03-03 19:12:41,997 INFO L226 Difference]: Without dead ends: 391 [2022-03-03 19:12:41,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:41,998 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:41,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 61 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-03-03 19:12:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 287. [2022-03-03 19:12:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.958041958041958) internal successors, (846), 286 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 846 transitions. [2022-03-03 19:12:42,001 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 846 transitions. Word has length 18 [2022-03-03 19:12:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:42,001 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 846 transitions. [2022-03-03 19:12:42,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 846 transitions. [2022-03-03 19:12:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:42,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:42,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:42,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:42,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-03-03 19:12:42,217 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1805940627, now seen corresponding path program 37 times [2022-03-03 19:12:42,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:42,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180256834] [2022-03-03 19:12:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:42,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:42,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180256834] [2022-03-03 19:12:42,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180256834] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:42,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748063418] [2022-03-03 19:12:42,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:42,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:42,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:42,298 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:42,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 19:12:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:42,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:42,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:42,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:42,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748063418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:42,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:42,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-03-03 19:12:42,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499673626] [2022-03-03 19:12:42,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:42,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:42,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:42,709 INFO L87 Difference]: Start difference. First operand 287 states and 846 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:42,912 INFO L93 Difference]: Finished difference Result 610 states and 1732 transitions. [2022-03-03 19:12:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:42,913 INFO L225 Difference]: With dead ends: 610 [2022-03-03 19:12:42,913 INFO L226 Difference]: Without dead ends: 591 [2022-03-03 19:12:42,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:42,913 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:42,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 93 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-03-03 19:12:42,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 293. [2022-03-03 19:12:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.98972602739726) internal successors, (873), 292 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 873 transitions. [2022-03-03 19:12:42,918 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 873 transitions. Word has length 18 [2022-03-03 19:12:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:42,918 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 873 transitions. [2022-03-03 19:12:42,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 873 transitions. [2022-03-03 19:12:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:42,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:42,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:42,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:43,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-03-03 19:12:43,127 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1644720687, now seen corresponding path program 38 times [2022-03-03 19:12:43,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:43,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002267739] [2022-03-03 19:12:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:43,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:43,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:43,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002267739] [2022-03-03 19:12:43,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002267739] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:43,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772605148] [2022-03-03 19:12:43,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:43,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:43,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:43,193 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:43,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 19:12:43,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:43,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:43,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:43,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:43,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:43,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772605148] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:43,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:43,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:12:43,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070033968] [2022-03-03 19:12:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:43,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:43,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:43,657 INFO L87 Difference]: Start difference. First operand 293 states and 873 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:43,880 INFO L93 Difference]: Finished difference Result 598 states and 1692 transitions. [2022-03-03 19:12:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:43,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:43,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:43,881 INFO L225 Difference]: With dead ends: 598 [2022-03-03 19:12:43,881 INFO L226 Difference]: Without dead ends: 575 [2022-03-03 19:12:43,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:43,881 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 95 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:43,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 74 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-03 19:12:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 295. [2022-03-03 19:12:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 2.9727891156462585) internal successors, (874), 294 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 874 transitions. [2022-03-03 19:12:43,886 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 874 transitions. Word has length 18 [2022-03-03 19:12:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:43,886 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 874 transitions. [2022-03-03 19:12:43,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 874 transitions. [2022-03-03 19:12:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:43,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:43,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:43,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:44,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:44,095 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash -355930025, now seen corresponding path program 39 times [2022-03-03 19:12:44,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:44,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291427702] [2022-03-03 19:12:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:44,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:44,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291427702] [2022-03-03 19:12:44,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291427702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:44,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398868103] [2022-03-03 19:12:44,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:44,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:44,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:44,163 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:44,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 19:12:44,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:44,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:44,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:44,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:44,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:44,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398868103] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:44,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:44,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-03-03 19:12:44,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425884844] [2022-03-03 19:12:44,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:44,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 19:12:44,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 19:12:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:44,629 INFO L87 Difference]: Start difference. First operand 295 states and 874 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:44,795 INFO L93 Difference]: Finished difference Result 653 states and 1829 transitions. [2022-03-03 19:12:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:44,795 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:44,796 INFO L225 Difference]: With dead ends: 653 [2022-03-03 19:12:44,796 INFO L226 Difference]: Without dead ends: 634 [2022-03-03 19:12:44,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:12:44,796 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 236 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:44,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-03 19:12:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 292. [2022-03-03 19:12:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.993127147766323) internal successors, (871), 291 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 871 transitions. [2022-03-03 19:12:44,801 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 871 transitions. Word has length 18 [2022-03-03 19:12:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:44,801 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 871 transitions. [2022-03-03 19:12:44,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 871 transitions. [2022-03-03 19:12:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:44,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:44,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:44,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:45,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:45,016 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1790277079, now seen corresponding path program 40 times [2022-03-03 19:12:45,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:45,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277368450] [2022-03-03 19:12:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:45,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:45,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277368450] [2022-03-03 19:12:45,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277368450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:45,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202756616] [2022-03-03 19:12:45,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:45,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:45,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:45,093 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:45,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 19:12:45,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:45,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:45,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:45,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:45,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202756616] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:45,364 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:45,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:45,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683389108] [2022-03-03 19:12:45,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:45,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:45,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:45,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:45,365 INFO L87 Difference]: Start difference. First operand 292 states and 871 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:45,488 INFO L93 Difference]: Finished difference Result 634 states and 1800 transitions. [2022-03-03 19:12:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:45,488 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:45,489 INFO L225 Difference]: With dead ends: 634 [2022-03-03 19:12:45,489 INFO L226 Difference]: Without dead ends: 615 [2022-03-03 19:12:45,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:45,489 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:45,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 110 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-03-03 19:12:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 288. [2022-03-03 19:12:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.965156794425087) internal successors, (851), 287 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 851 transitions. [2022-03-03 19:12:45,494 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 851 transitions. Word has length 18 [2022-03-03 19:12:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:45,494 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 851 transitions. [2022-03-03 19:12:45,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 851 transitions. [2022-03-03 19:12:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:45,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:45,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:45,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:45,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:45,711 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:45,715 INFO L85 PathProgramCache]: Analyzing trace with hash 785234931, now seen corresponding path program 41 times [2022-03-03 19:12:45,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:45,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767919580] [2022-03-03 19:12:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:45,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:45,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767919580] [2022-03-03 19:12:45,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767919580] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:45,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73212748] [2022-03-03 19:12:45,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:45,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:45,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:45,758 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:45,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 19:12:45,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:45,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:45,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:45,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:45,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:46,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73212748] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:46,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:46,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:12:46,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263475231] [2022-03-03 19:12:46,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:46,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:46,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:46,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:46,092 INFO L87 Difference]: Start difference. First operand 288 states and 851 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:46,243 INFO L93 Difference]: Finished difference Result 606 states and 1702 transitions. [2022-03-03 19:12:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:46,245 INFO L225 Difference]: With dead ends: 606 [2022-03-03 19:12:46,245 INFO L226 Difference]: Without dead ends: 583 [2022-03-03 19:12:46,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:46,245 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:46,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 65 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-03 19:12:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 296. [2022-03-03 19:12:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.9593220338983053) internal successors, (873), 295 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 873 transitions. [2022-03-03 19:12:46,250 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 873 transitions. Word has length 18 [2022-03-03 19:12:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:46,250 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 873 transitions. [2022-03-03 19:12:46,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 873 transitions. [2022-03-03 19:12:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:46,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:46,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:46,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:46,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:46,460 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash -392881489, now seen corresponding path program 42 times [2022-03-03 19:12:46,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:46,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318526543] [2022-03-03 19:12:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:46,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:46,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318526543] [2022-03-03 19:12:46,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318526543] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:46,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746964716] [2022-03-03 19:12:46,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:46,538 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:46,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 19:12:46,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:46,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:46,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:46,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:46,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:46,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746964716] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:46,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:46,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-03 19:12:46,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415456774] [2022-03-03 19:12:46,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:46,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:46,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:46,970 INFO L87 Difference]: Start difference. First operand 296 states and 873 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:47,117 INFO L93 Difference]: Finished difference Result 590 states and 1672 transitions. [2022-03-03 19:12:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:47,119 INFO L225 Difference]: With dead ends: 590 [2022-03-03 19:12:47,119 INFO L226 Difference]: Without dead ends: 571 [2022-03-03 19:12:47,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:47,119 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:47,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 98 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-03-03 19:12:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 285. [2022-03-03 19:12:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9507042253521125) internal successors, (838), 284 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 838 transitions. [2022-03-03 19:12:47,124 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 838 transitions. Word has length 18 [2022-03-03 19:12:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:47,124 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 838 transitions. [2022-03-03 19:12:47,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 838 transitions. [2022-03-03 19:12:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:47,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:47,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:47,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:47,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-03-03 19:12:47,341 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2069781119, now seen corresponding path program 43 times [2022-03-03 19:12:47,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:47,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761797329] [2022-03-03 19:12:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:47,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:47,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:47,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761797329] [2022-03-03 19:12:47,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761797329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:47,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866258466] [2022-03-03 19:12:47,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:47,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:47,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:47,405 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:47,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 19:12:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:47,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:47,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:47,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:47,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866258466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:47,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:47,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-03 19:12:47,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233723607] [2022-03-03 19:12:47,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:47,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:47,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:47,768 INFO L87 Difference]: Start difference. First operand 285 states and 838 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:48,059 INFO L93 Difference]: Finished difference Result 479 states and 1339 transitions. [2022-03-03 19:12:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:48,060 INFO L225 Difference]: With dead ends: 479 [2022-03-03 19:12:48,060 INFO L226 Difference]: Without dead ends: 460 [2022-03-03 19:12:48,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:48,061 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 175 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:48,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 105 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-03-03 19:12:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 289. [2022-03-03 19:12:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.9444444444444446) internal successors, (848), 288 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 848 transitions. [2022-03-03 19:12:48,065 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 848 transitions. Word has length 18 [2022-03-03 19:12:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:48,066 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 848 transitions. [2022-03-03 19:12:48,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 848 transitions. [2022-03-03 19:12:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:48,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:48,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:48,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-03 19:12:48,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:48,279 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1278687303, now seen corresponding path program 44 times [2022-03-03 19:12:48,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:48,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968783478] [2022-03-03 19:12:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:48,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:48,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968783478] [2022-03-03 19:12:48,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968783478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:48,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194037411] [2022-03-03 19:12:48,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:48,350 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:48,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 19:12:48,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:48,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:48,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:48,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:48,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:48,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194037411] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:48,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:48,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-03-03 19:12:48,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097523765] [2022-03-03 19:12:48,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:48,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:48,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:48,895 INFO L87 Difference]: Start difference. First operand 289 states and 848 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:49,123 INFO L93 Difference]: Finished difference Result 485 states and 1345 transitions. [2022-03-03 19:12:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:49,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:49,124 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:12:49,124 INFO L226 Difference]: Without dead ends: 462 [2022-03-03 19:12:49,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:49,125 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:49,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 65 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-03 19:12:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 297. [2022-03-03 19:12:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.939189189189189) internal successors, (870), 296 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 870 transitions. [2022-03-03 19:12:49,129 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 870 transitions. Word has length 18 [2022-03-03 19:12:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:49,129 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 870 transitions. [2022-03-03 19:12:49,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 870 transitions. [2022-03-03 19:12:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:49,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:49,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:49,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:49,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-03-03 19:12:49,339 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 686494219, now seen corresponding path program 45 times [2022-03-03 19:12:49,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:49,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562197593] [2022-03-03 19:12:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:49,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:49,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:49,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562197593] [2022-03-03 19:12:49,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562197593] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:49,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674333359] [2022-03-03 19:12:49,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:49,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:49,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:49,451 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:49,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 19:12:49,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:49,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:49,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:49,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:49,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674333359] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:49,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:49,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-03-03 19:12:49,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499628922] [2022-03-03 19:12:49,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:49,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:12:49,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:12:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:49,955 INFO L87 Difference]: Start difference. First operand 297 states and 870 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:50,285 INFO L93 Difference]: Finished difference Result 469 states and 1315 transitions. [2022-03-03 19:12:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:50,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:50,286 INFO L225 Difference]: With dead ends: 469 [2022-03-03 19:12:50,286 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 19:12:50,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:50,286 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 131 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:50,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 128 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 19:12:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 285. [2022-03-03 19:12:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9507042253521125) internal successors, (838), 284 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 838 transitions. [2022-03-03 19:12:50,291 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 838 transitions. Word has length 18 [2022-03-03 19:12:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:50,291 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 838 transitions. [2022-03-03 19:12:50,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 838 transitions. [2022-03-03 19:12:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:50,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:50,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:50,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:50,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-03-03 19:12:50,501 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash -197798994, now seen corresponding path program 5 times [2022-03-03 19:12:50,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:50,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410169699] [2022-03-03 19:12:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:50,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:50,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410169699] [2022-03-03 19:12:50,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410169699] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:50,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598706856] [2022-03-03 19:12:50,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:50,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:50,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:50,549 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:50,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 19:12:50,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:50,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:50,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:50,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:50,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:50,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598706856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:50,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:50,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-03 19:12:50,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989623733] [2022-03-03 19:12:50,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:50,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:50,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:50,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:50,707 INFO L87 Difference]: Start difference. First operand 285 states and 838 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:50,889 INFO L93 Difference]: Finished difference Result 480 states and 1342 transitions. [2022-03-03 19:12:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:50,890 INFO L225 Difference]: With dead ends: 480 [2022-03-03 19:12:50,890 INFO L226 Difference]: Without dead ends: 458 [2022-03-03 19:12:50,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:50,891 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 120 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:50,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 97 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-03 19:12:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 289. [2022-03-03 19:12:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.9583333333333335) internal successors, (852), 288 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 852 transitions. [2022-03-03 19:12:50,896 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 852 transitions. Word has length 18 [2022-03-03 19:12:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:50,896 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 852 transitions. [2022-03-03 19:12:50,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 852 transitions. [2022-03-03 19:12:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:50,897 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:50,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:50,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:51,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-03-03 19:12:51,107 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2033870275, now seen corresponding path program 46 times [2022-03-03 19:12:51,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:51,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039192738] [2022-03-03 19:12:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:51,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:51,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039192738] [2022-03-03 19:12:51,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039192738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:51,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161278558] [2022-03-03 19:12:51,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:51,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:51,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:51,160 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:51,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 19:12:51,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:51,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:51,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:51,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:51,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:51,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161278558] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:51,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:51,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:51,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36904753] [2022-03-03 19:12:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:51,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:51,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:51,631 INFO L87 Difference]: Start difference. First operand 289 states and 852 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:51,869 INFO L93 Difference]: Finished difference Result 435 states and 1227 transitions. [2022-03-03 19:12:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:51,870 INFO L225 Difference]: With dead ends: 435 [2022-03-03 19:12:51,871 INFO L226 Difference]: Without dead ends: 408 [2022-03-03 19:12:51,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:51,871 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:51,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-03 19:12:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 289. [2022-03-03 19:12:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.951388888888889) internal successors, (850), 288 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 850 transitions. [2022-03-03 19:12:51,875 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 850 transitions. Word has length 18 [2022-03-03 19:12:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:51,875 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 850 transitions. [2022-03-03 19:12:51,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 850 transitions. [2022-03-03 19:12:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:51,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:51,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:51,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:52,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-03-03 19:12:52,091 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1536570086, now seen corresponding path program 6 times [2022-03-03 19:12:52,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:52,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826085600] [2022-03-03 19:12:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:52,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826085600] [2022-03-03 19:12:52,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826085600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:52,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040511990] [2022-03-03 19:12:52,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:52,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:52,135 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:52,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 19:12:52,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:52,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:52,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:52,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040511990] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:52,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:52,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:12:52,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403387949] [2022-03-03 19:12:52,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:52,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:12:52,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:52,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:12:52,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:52,346 INFO L87 Difference]: Start difference. First operand 289 states and 850 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:52,495 INFO L93 Difference]: Finished difference Result 485 states and 1348 transitions. [2022-03-03 19:12:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:52,496 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:12:52,496 INFO L226 Difference]: Without dead ends: 463 [2022-03-03 19:12:52,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:52,496 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 108 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:52,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 85 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-03-03 19:12:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 291. [2022-03-03 19:12:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.962068965517241) internal successors, (859), 290 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 859 transitions. [2022-03-03 19:12:52,500 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 859 transitions. Word has length 18 [2022-03-03 19:12:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:52,500 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 859 transitions. [2022-03-03 19:12:52,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 859 transitions. [2022-03-03 19:12:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:52,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:52,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:52,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:52,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:52,708 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 824244543, now seen corresponding path program 47 times [2022-03-03 19:12:52,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:52,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974567387] [2022-03-03 19:12:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:52,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:52,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974567387] [2022-03-03 19:12:52,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974567387] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:52,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683489255] [2022-03-03 19:12:52,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:52,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:52,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:52,781 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:52,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 19:12:52,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:52,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:52,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:52,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:53,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683489255] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:53,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:53,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-03-03 19:12:53,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829331159] [2022-03-03 19:12:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:53,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:53,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:53,289 INFO L87 Difference]: Start difference. First operand 291 states and 859 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:53,534 INFO L93 Difference]: Finished difference Result 434 states and 1224 transitions. [2022-03-03 19:12:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:53,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:53,535 INFO L225 Difference]: With dead ends: 434 [2022-03-03 19:12:53,535 INFO L226 Difference]: Without dead ends: 411 [2022-03-03 19:12:53,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:53,535 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:53,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 72 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:53,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-03-03 19:12:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 297. [2022-03-03 19:12:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.9527027027027026) internal successors, (874), 296 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 874 transitions. [2022-03-03 19:12:53,539 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 874 transitions. Word has length 18 [2022-03-03 19:12:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:53,539 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 874 transitions. [2022-03-03 19:12:53,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 874 transitions. [2022-03-03 19:12:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:53,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:53,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:53,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:53,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:53,740 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:53,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:53,741 INFO L85 PathProgramCache]: Analyzing trace with hash 824271338, now seen corresponding path program 7 times [2022-03-03 19:12:53,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:53,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885848832] [2022-03-03 19:12:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:53,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:53,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885848832] [2022-03-03 19:12:53,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885848832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:53,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:53,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:53,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561644077] [2022-03-03 19:12:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:53,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:53,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:53,793 INFO L87 Difference]: Start difference. First operand 297 states and 874 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:53,947 INFO L93 Difference]: Finished difference Result 455 states and 1279 transitions. [2022-03-03 19:12:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:53,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:53,948 INFO L225 Difference]: With dead ends: 455 [2022-03-03 19:12:53,948 INFO L226 Difference]: Without dead ends: 426 [2022-03-03 19:12:53,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:53,948 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:53,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 80 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-03-03 19:12:53,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 297. [2022-03-03 19:12:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.945945945945946) internal successors, (872), 296 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 872 transitions. [2022-03-03 19:12:53,952 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 872 transitions. Word has length 18 [2022-03-03 19:12:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:53,952 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 872 transitions. [2022-03-03 19:12:53,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 872 transitions. [2022-03-03 19:12:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:53,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:53,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:53,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-03-03 19:12:53,953 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:53,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash 232051459, now seen corresponding path program 48 times [2022-03-03 19:12:53,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:53,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975221875] [2022-03-03 19:12:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:54,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:54,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975221875] [2022-03-03 19:12:54,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975221875] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:54,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156133865] [2022-03-03 19:12:54,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:54,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:54,018 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 19:12:54,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:54,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:54,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:54,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:54,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156133865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:54,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:54,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-03-03 19:12:54,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466612543] [2022-03-03 19:12:54,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:54,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:12:54,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:12:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:54,399 INFO L87 Difference]: Start difference. First operand 297 states and 872 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:54,601 INFO L93 Difference]: Finished difference Result 402 states and 1155 transitions. [2022-03-03 19:12:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:54,601 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:54,602 INFO L225 Difference]: With dead ends: 402 [2022-03-03 19:12:54,602 INFO L226 Difference]: Without dead ends: 383 [2022-03-03 19:12:54,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:54,602 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 121 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:54,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 102 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-03 19:12:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 289. [2022-03-03 19:12:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.951388888888889) internal successors, (850), 288 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 850 transitions. [2022-03-03 19:12:54,606 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 850 transitions. Word has length 18 [2022-03-03 19:12:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:54,606 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 850 transitions. [2022-03-03 19:12:54,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 850 transitions. [2022-03-03 19:12:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:54,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:54,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:54,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-03 19:12:54,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:54,820 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1675811136, now seen corresponding path program 6 times [2022-03-03 19:12:54,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:54,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890405237] [2022-03-03 19:12:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:54,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:54,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890405237] [2022-03-03 19:12:54,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890405237] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:54,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597706901] [2022-03-03 19:12:54,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:54,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:54,863 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:54,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 19:12:54,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:54,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:54,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:54,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:55,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:55,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597706901] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:55,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:55,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2022-03-03 19:12:55,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431075155] [2022-03-03 19:12:55,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:55,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:55,118 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:55,118 INFO L87 Difference]: Start difference. First operand 289 states and 850 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:55,320 INFO L93 Difference]: Finished difference Result 435 states and 1232 transitions. [2022-03-03 19:12:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:12:55,320 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:55,321 INFO L225 Difference]: With dead ends: 435 [2022-03-03 19:12:55,321 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:12:55,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:55,321 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:55,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 113 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:12:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 255. [2022-03-03 19:12:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 2.9803149606299213) internal successors, (757), 254 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 757 transitions. [2022-03-03 19:12:55,325 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 757 transitions. Word has length 18 [2022-03-03 19:12:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:55,325 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 757 transitions. [2022-03-03 19:12:55,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 757 transitions. [2022-03-03 19:12:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:55,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:55,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:55,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:55,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:55,535 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1048056174, now seen corresponding path program 8 times [2022-03-03 19:12:55,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:55,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896425517] [2022-03-03 19:12:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:55,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:55,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896425517] [2022-03-03 19:12:55,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896425517] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:55,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607718987] [2022-03-03 19:12:55,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:55,559 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:55,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 19:12:55,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:55,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:55,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:55,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:55,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:55,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607718987] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:55,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:55,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-03-03 19:12:55,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124146703] [2022-03-03 19:12:55,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:55,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:55,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:55,700 INFO L87 Difference]: Start difference. First operand 255 states and 757 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:55,785 INFO L93 Difference]: Finished difference Result 390 states and 1138 transitions. [2022-03-03 19:12:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:55,786 INFO L225 Difference]: With dead ends: 390 [2022-03-03 19:12:55,786 INFO L226 Difference]: Without dead ends: 350 [2022-03-03 19:12:55,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:55,786 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:55,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 73 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-03-03 19:12:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 244. [2022-03-03 19:12:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.983539094650206) internal successors, (725), 243 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 725 transitions. [2022-03-03 19:12:55,789 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 725 transitions. Word has length 18 [2022-03-03 19:12:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:55,789 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 725 transitions. [2022-03-03 19:12:55,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 725 transitions. [2022-03-03 19:12:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:55,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:55,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:55,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:55,995 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1801424317, now seen corresponding path program 49 times [2022-03-03 19:12:55,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:55,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180455298] [2022-03-03 19:12:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:56,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:56,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180455298] [2022-03-03 19:12:56,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180455298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:56,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76150303] [2022-03-03 19:12:56,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:56,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:56,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:56,078 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:56,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 19:12:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:56,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:56,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:56,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76150303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:56,496 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:56,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:12:56,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693285531] [2022-03-03 19:12:56,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:56,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:56,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:56,497 INFO L87 Difference]: Start difference. First operand 244 states and 725 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:56,798 INFO L93 Difference]: Finished difference Result 447 states and 1272 transitions. [2022-03-03 19:12:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:56,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:56,799 INFO L225 Difference]: With dead ends: 447 [2022-03-03 19:12:56,799 INFO L226 Difference]: Without dead ends: 428 [2022-03-03 19:12:56,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:56,799 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:56,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 129 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-03 19:12:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 249. [2022-03-03 19:12:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 3.0) internal successors, (744), 248 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 744 transitions. [2022-03-03 19:12:56,804 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 744 transitions. Word has length 18 [2022-03-03 19:12:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:56,804 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 744 transitions. [2022-03-03 19:12:56,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 744 transitions. [2022-03-03 19:12:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:56,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:56,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:56,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:57,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-03-03 19:12:57,018 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1962644257, now seen corresponding path program 50 times [2022-03-03 19:12:57,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:57,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773426679] [2022-03-03 19:12:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:57,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:57,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773426679] [2022-03-03 19:12:57,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773426679] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:57,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307719840] [2022-03-03 19:12:57,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:57,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:57,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:57,065 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:57,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 19:12:57,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:57,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:57,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:57,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:57,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:57,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307719840] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:57,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:57,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:12:57,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63124080] [2022-03-03 19:12:57,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:57,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:57,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:57,471 INFO L87 Difference]: Start difference. First operand 249 states and 744 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:57,654 INFO L93 Difference]: Finished difference Result 451 states and 1272 transitions. [2022-03-03 19:12:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:57,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:57,655 INFO L225 Difference]: With dead ends: 451 [2022-03-03 19:12:57,655 INFO L226 Difference]: Without dead ends: 428 [2022-03-03 19:12:57,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:57,655 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:57,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 73 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:57,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-03 19:12:57,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 247. [2022-03-03 19:12:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9959349593495936) internal successors, (737), 246 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 737 transitions. [2022-03-03 19:12:57,660 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 737 transitions. Word has length 18 [2022-03-03 19:12:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:57,660 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 737 transitions. [2022-03-03 19:12:57,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 737 transitions. [2022-03-03 19:12:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:57,660 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:57,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:57,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:57,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-03-03 19:12:57,875 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -280807347, now seen corresponding path program 51 times [2022-03-03 19:12:57,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:57,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454761221] [2022-03-03 19:12:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:57,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:57,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454761221] [2022-03-03 19:12:57,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454761221] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:57,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023392175] [2022-03-03 19:12:57,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:57,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:57,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:57,935 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:57,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 19:12:57,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:57,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:57,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:57,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:58,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:58,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023392175] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:58,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:58,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:12:58,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022140164] [2022-03-03 19:12:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:58,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:58,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:58,348 INFO L87 Difference]: Start difference. First operand 247 states and 737 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:58,518 INFO L93 Difference]: Finished difference Result 445 states and 1253 transitions. [2022-03-03 19:12:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:58,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:58,520 INFO L225 Difference]: With dead ends: 445 [2022-03-03 19:12:58,520 INFO L226 Difference]: Without dead ends: 418 [2022-03-03 19:12:58,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:58,520 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:58,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 62 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-03 19:12:58,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 247. [2022-03-03 19:12:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9878048780487805) internal successors, (735), 246 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 735 transitions. [2022-03-03 19:12:58,523 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 735 transitions. Word has length 18 [2022-03-03 19:12:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:58,523 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 735 transitions. [2022-03-03 19:12:58,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 735 transitions. [2022-03-03 19:12:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:58,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:58,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:58,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-03 19:12:58,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-03-03 19:12:58,737 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1315741734, now seen corresponding path program 9 times [2022-03-03 19:12:58,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:58,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578349025] [2022-03-03 19:12:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:58,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:58,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578349025] [2022-03-03 19:12:58,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578349025] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:58,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421816560] [2022-03-03 19:12:58,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:58,757 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:58,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 19:12:58,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:58,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:58,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:58,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:58,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:58,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421816560] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:58,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:58,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-03-03 19:12:58,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315327876] [2022-03-03 19:12:58,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:58,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:12:58,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:12:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:12:58,865 INFO L87 Difference]: Start difference. First operand 247 states and 735 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:58,932 INFO L93 Difference]: Finished difference Result 352 states and 995 transitions. [2022-03-03 19:12:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:58,933 INFO L225 Difference]: With dead ends: 352 [2022-03-03 19:12:58,933 INFO L226 Difference]: Without dead ends: 312 [2022-03-03 19:12:58,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:58,933 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:58,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 72 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-03-03 19:12:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 241. [2022-03-03 19:12:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.95) internal successors, (708), 240 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 708 transitions. [2022-03-03 19:12:58,936 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 708 transitions. Word has length 18 [2022-03-03 19:12:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:58,936 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 708 transitions. [2022-03-03 19:12:58,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 708 transitions. [2022-03-03 19:12:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:58,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:58,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:58,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:59,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-03-03 19:12:59,152 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash -315615553, now seen corresponding path program 52 times [2022-03-03 19:12:59,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:59,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669622407] [2022-03-03 19:12:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:59,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:59,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:59,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669622407] [2022-03-03 19:12:59,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669622407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:59,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213659605] [2022-03-03 19:12:59,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:59,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:59,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:59,199 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:59,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 19:12:59,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:59,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:59,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:59,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:59,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:59,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213659605] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:59,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:59,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-03-03 19:12:59,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319053960] [2022-03-03 19:12:59,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:59,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:59,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:59,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:59,499 INFO L87 Difference]: Start difference. First operand 241 states and 708 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:59,651 INFO L93 Difference]: Finished difference Result 481 states and 1326 transitions. [2022-03-03 19:12:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:12:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:59,652 INFO L225 Difference]: With dead ends: 481 [2022-03-03 19:12:59,652 INFO L226 Difference]: Without dead ends: 462 [2022-03-03 19:12:59,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:12:59,652 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 149 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:59,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 100 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-03 19:12:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 247. [2022-03-03 19:12:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.991869918699187) internal successors, (736), 246 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 736 transitions. [2022-03-03 19:12:59,656 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 736 transitions. Word has length 18 [2022-03-03 19:12:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:59,656 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 736 transitions. [2022-03-03 19:12:59,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 736 transitions. [2022-03-03 19:12:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:59,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:59,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:59,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:59,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:59,874 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:59,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash -476835493, now seen corresponding path program 53 times [2022-03-03 19:12:59,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:59,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917803237] [2022-03-03 19:12:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:59,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:59,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:59,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917803237] [2022-03-03 19:12:59,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917803237] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:59,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186043452] [2022-03-03 19:12:59,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:59,931 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:12:59,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 19:12:59,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:59,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:59,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:12:59,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:00,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:00,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186043452] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:00,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:00,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:00,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597372336] [2022-03-03 19:13:00,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:00,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:00,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:00,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:00,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:00,247 INFO L87 Difference]: Start difference. First operand 247 states and 736 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:00,397 INFO L93 Difference]: Finished difference Result 485 states and 1326 transitions. [2022-03-03 19:13:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:00,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:00,398 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:13:00,398 INFO L226 Difference]: Without dead ends: 462 [2022-03-03 19:13:00,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:00,399 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:00,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 69 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-03 19:13:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 249. [2022-03-03 19:13:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.971774193548387) internal successors, (737), 248 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 737 transitions. [2022-03-03 19:13:00,403 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 737 transitions. Word has length 18 [2022-03-03 19:13:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:00,403 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 737 transitions. [2022-03-03 19:13:00,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 737 transitions. [2022-03-03 19:13:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:00,403 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:00,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:00,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:00,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:00,619 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -289865558, now seen corresponding path program 10 times [2022-03-03 19:13:00,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:00,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725363884] [2022-03-03 19:13:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:00,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:00,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725363884] [2022-03-03 19:13:00,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725363884] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:00,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:00,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:00,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899864560] [2022-03-03 19:13:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:00,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:00,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:00,670 INFO L87 Difference]: Start difference. First operand 249 states and 737 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:00,749 INFO L93 Difference]: Finished difference Result 294 states and 844 transitions. [2022-03-03 19:13:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:13:00,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:00,749 INFO L225 Difference]: With dead ends: 294 [2022-03-03 19:13:00,749 INFO L226 Difference]: Without dead ends: 241 [2022-03-03 19:13:00,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:00,750 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:00,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:13:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-03-03 19:13:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 217. [2022-03-03 19:13:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9444444444444446) internal successors, (636), 216 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 636 transitions. [2022-03-03 19:13:00,752 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 636 transitions. Word has length 18 [2022-03-03 19:13:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:00,752 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 636 transitions. [2022-03-03 19:13:00,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 636 transitions. [2022-03-03 19:13:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:00,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:00,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:00,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-03-03 19:13:00,753 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1817481091, now seen corresponding path program 54 times [2022-03-03 19:13:00,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:00,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514109466] [2022-03-03 19:13:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:00,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:00,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514109466] [2022-03-03 19:13:00,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514109466] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:00,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850310942] [2022-03-03 19:13:00,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:00,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:00,853 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:00,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 19:13:00,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:00,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:00,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:01,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:01,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850310942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:01,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:01,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-03-03 19:13:01,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869714367] [2022-03-03 19:13:01,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:01,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 19:13:01,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 19:13:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:01,301 INFO L87 Difference]: Start difference. First operand 217 states and 636 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:01,491 INFO L93 Difference]: Finished difference Result 419 states and 1150 transitions. [2022-03-03 19:13:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:01,492 INFO L225 Difference]: With dead ends: 419 [2022-03-03 19:13:01,492 INFO L226 Difference]: Without dead ends: 400 [2022-03-03 19:13:01,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:13:01,493 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 199 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:01,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 104 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:01,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-03-03 19:13:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 214. [2022-03-03 19:13:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.971830985915493) internal successors, (633), 213 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 633 transitions. [2022-03-03 19:13:01,496 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 633 transitions. Word has length 18 [2022-03-03 19:13:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:01,496 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 633 transitions. [2022-03-03 19:13:01,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 633 transitions. [2022-03-03 19:13:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:01,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:01,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:01,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:01,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:01,713 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -331279101, now seen corresponding path program 55 times [2022-03-03 19:13:01,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:01,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236976863] [2022-03-03 19:13:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:01,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:01,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:01,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236976863] [2022-03-03 19:13:01,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236976863] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:01,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085002697] [2022-03-03 19:13:01,750 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:01,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:01,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:01,752 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:01,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 19:13:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:01,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:01,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:01,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:02,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085002697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:02,007 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:02,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:13:02,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896984000] [2022-03-03 19:13:02,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:02,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:13:02,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:13:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:02,007 INFO L87 Difference]: Start difference. First operand 214 states and 633 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:02,123 INFO L93 Difference]: Finished difference Result 391 states and 1099 transitions. [2022-03-03 19:13:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:02,123 INFO L225 Difference]: With dead ends: 391 [2022-03-03 19:13:02,123 INFO L226 Difference]: Without dead ends: 372 [2022-03-03 19:13:02,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:02,124 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:02,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 103 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-03 19:13:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 210. [2022-03-03 19:13:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9330143540669855) internal successors, (613), 209 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 613 transitions. [2022-03-03 19:13:02,127 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 613 transitions. Word has length 18 [2022-03-03 19:13:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:02,127 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 613 transitions. [2022-03-03 19:13:02,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 613 transitions. [2022-03-03 19:13:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:02,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:02,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:02,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:02,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:02,343 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1336321249, now seen corresponding path program 56 times [2022-03-03 19:13:02,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:02,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275594974] [2022-03-03 19:13:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:02,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:02,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275594974] [2022-03-03 19:13:02,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275594974] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:02,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544567121] [2022-03-03 19:13:02,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:02,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:02,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:02,385 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:02,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 19:13:02,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:02,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:02,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:02,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:02,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:02,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544567121] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:02,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:02,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:02,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718603875] [2022-03-03 19:13:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:02,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:02,722 INFO L87 Difference]: Start difference. First operand 210 states and 613 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:02,887 INFO L93 Difference]: Finished difference Result 427 states and 1174 transitions. [2022-03-03 19:13:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:02,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:02,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:02,888 INFO L225 Difference]: With dead ends: 427 [2022-03-03 19:13:02,888 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:13:02,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:02,888 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:02,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 79 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:13:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 218. [2022-03-03 19:13:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9262672811059907) internal successors, (635), 217 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 635 transitions. [2022-03-03 19:13:02,892 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 635 transitions. Word has length 18 [2022-03-03 19:13:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:02,893 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 635 transitions. [2022-03-03 19:13:02,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 635 transitions. [2022-03-03 19:13:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:02,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:02,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:02,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-03 19:13:03,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:03,113 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:03,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:03,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1780529627, now seen corresponding path program 57 times [2022-03-03 19:13:03,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:03,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096110244] [2022-03-03 19:13:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:03,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:03,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:03,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096110244] [2022-03-03 19:13:03,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096110244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:03,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367843710] [2022-03-03 19:13:03,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:03,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:03,153 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:03,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 19:13:03,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:03,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:03,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:03,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:03,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:03,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367843710] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:03,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:03,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-03 19:13:03,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652943530] [2022-03-03 19:13:03,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:03,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:13:03,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:13:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:03,421 INFO L87 Difference]: Start difference. First operand 218 states and 635 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:03,588 INFO L93 Difference]: Finished difference Result 411 states and 1144 transitions. [2022-03-03 19:13:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:03,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:03,589 INFO L225 Difference]: With dead ends: 411 [2022-03-03 19:13:03,589 INFO L226 Difference]: Without dead ends: 392 [2022-03-03 19:13:03,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:03,590 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:03,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 125 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-03 19:13:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 209. [2022-03-03 19:13:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.923076923076923) internal successors, (608), 208 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 608 transitions. [2022-03-03 19:13:03,594 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 608 transitions. Word has length 18 [2022-03-03 19:13:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:03,594 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 608 transitions. [2022-03-03 19:13:03,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 608 transitions. [2022-03-03 19:13:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:03,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:03,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:03,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-03 19:13:03,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-03-03 19:13:03,812 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1155062007, now seen corresponding path program 58 times [2022-03-03 19:13:03,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:03,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063337279] [2022-03-03 19:13:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:03,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:03,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063337279] [2022-03-03 19:13:03,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063337279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:03,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744306445] [2022-03-03 19:13:03,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:03,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:03,856 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:03,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 19:13:03,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:03,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:03,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:03,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:03,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:04,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744306445] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:04,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:04,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:04,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836246736] [2022-03-03 19:13:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:04,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:04,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:04,213 INFO L87 Difference]: Start difference. First operand 209 states and 608 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:04,387 INFO L93 Difference]: Finished difference Result 371 states and 1026 transitions. [2022-03-03 19:13:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:04,388 INFO L225 Difference]: With dead ends: 371 [2022-03-03 19:13:04,388 INFO L226 Difference]: Without dead ends: 344 [2022-03-03 19:13:04,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:04,389 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:04,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 62 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-03-03 19:13:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 211. [2022-03-03 19:13:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 2.919047619047619) internal successors, (613), 210 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 613 transitions. [2022-03-03 19:13:04,392 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 613 transitions. Word has length 18 [2022-03-03 19:13:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:04,392 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 613 transitions. [2022-03-03 19:13:04,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 613 transitions. [2022-03-03 19:13:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:04,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:04,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:04,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:04,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-03-03 19:13:04,608 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1245965, now seen corresponding path program 59 times [2022-03-03 19:13:04,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:04,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909933362] [2022-03-03 19:13:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:04,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:04,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:04,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909933362] [2022-03-03 19:13:04,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909933362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:04,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987468142] [2022-03-03 19:13:04,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:04,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:04,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:04,679 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:04,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 19:13:04,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:04,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:04,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:04,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:04,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:05,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987468142] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:05,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:05,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:13:05,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253517840] [2022-03-03 19:13:05,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:05,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:05,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:05,138 INFO L87 Difference]: Start difference. First operand 211 states and 613 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:05,316 INFO L93 Difference]: Finished difference Result 363 states and 1008 transitions. [2022-03-03 19:13:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:05,317 INFO L225 Difference]: With dead ends: 363 [2022-03-03 19:13:05,317 INFO L226 Difference]: Without dead ends: 340 [2022-03-03 19:13:05,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:05,317 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:05,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 72 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-03-03 19:13:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 219. [2022-03-03 19:13:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9128440366972477) internal successors, (635), 218 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 635 transitions. [2022-03-03 19:13:05,321 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 635 transitions. Word has length 18 [2022-03-03 19:13:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:05,321 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 635 transitions. [2022-03-03 19:13:05,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 635 transitions. [2022-03-03 19:13:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:05,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:05,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:05,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:05,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-03-03 19:13:05,537 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:05,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1176870455, now seen corresponding path program 60 times [2022-03-03 19:13:05,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:05,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024374130] [2022-03-03 19:13:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:05,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:05,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024374130] [2022-03-03 19:13:05,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024374130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:05,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988146190] [2022-03-03 19:13:05,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:05,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:05,582 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:05,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 19:13:05,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:05,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:05,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:05,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:05,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:06,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988146190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:06,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:06,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-03 19:13:06,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688949542] [2022-03-03 19:13:06,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:06,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:13:06,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:13:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:06,081 INFO L87 Difference]: Start difference. First operand 219 states and 635 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:06,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:06,355 INFO L93 Difference]: Finished difference Result 338 states and 956 transitions. [2022-03-03 19:13:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:06,355 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:06,355 INFO L225 Difference]: With dead ends: 338 [2022-03-03 19:13:06,355 INFO L226 Difference]: Without dead ends: 319 [2022-03-03 19:13:06,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:06,356 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:06,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 100 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-03 19:13:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 209. [2022-03-03 19:13:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.923076923076923) internal successors, (608), 208 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 608 transitions. [2022-03-03 19:13:06,359 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 608 transitions. Word has length 18 [2022-03-03 19:13:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 608 transitions. [2022-03-03 19:13:06,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 608 transitions. [2022-03-03 19:13:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:06,359 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:06,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:06,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:06,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2022-03-03 19:13:06,560 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1674326481, now seen corresponding path program 61 times [2022-03-03 19:13:06,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:06,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200710472] [2022-03-03 19:13:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:06,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:06,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:06,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200710472] [2022-03-03 19:13:06,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200710472] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:06,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548943209] [2022-03-03 19:13:06,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:06,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:06,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:06,631 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:06,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 19:13:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:06,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:06,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:06,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:07,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548943209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:07,029 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:07,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-03 19:13:07,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96928727] [2022-03-03 19:13:07,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:07,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:13:07,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:13:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:13:07,030 INFO L87 Difference]: Start difference. First operand 209 states and 608 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:07,322 INFO L93 Difference]: Finished difference Result 369 states and 1028 transitions. [2022-03-03 19:13:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:07,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:07,322 INFO L225 Difference]: With dead ends: 369 [2022-03-03 19:13:07,323 INFO L226 Difference]: Without dead ends: 350 [2022-03-03 19:13:07,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:13:07,323 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 147 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:07,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 111 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-03-03 19:13:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 214. [2022-03-03 19:13:07,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.92018779342723) internal successors, (622), 213 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 622 transitions. [2022-03-03 19:13:07,326 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 622 transitions. Word has length 18 [2022-03-03 19:13:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:07,326 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 622 transitions. [2022-03-03 19:13:07,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 622 transitions. [2022-03-03 19:13:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:07,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:07,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:07,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-03 19:13:07,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:07,533 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1303234541, now seen corresponding path program 62 times [2022-03-03 19:13:07,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:07,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000122038] [2022-03-03 19:13:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:07,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:07,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000122038] [2022-03-03 19:13:07,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000122038] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:07,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135433512] [2022-03-03 19:13:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:07,619 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:07,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 19:13:07,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:07,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:07,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:07,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:07,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:08,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135433512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:08,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:08,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-03-03 19:13:08,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416760074] [2022-03-03 19:13:08,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:08,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:13:08,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:13:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:08,065 INFO L87 Difference]: Start difference. First operand 214 states and 622 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:08,391 INFO L93 Difference]: Finished difference Result 412 states and 1121 transitions. [2022-03-03 19:13:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:08,391 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:08,392 INFO L225 Difference]: With dead ends: 412 [2022-03-03 19:13:08,392 INFO L226 Difference]: Without dead ends: 393 [2022-03-03 19:13:08,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:13:08,392 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 141 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:08,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 134 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:13:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-03-03 19:13:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 216. [2022-03-03 19:13:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.925581395348837) internal successors, (629), 215 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 629 transitions. [2022-03-03 19:13:08,395 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 629 transitions. Word has length 18 [2022-03-03 19:13:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:08,396 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 629 transitions. [2022-03-03 19:13:08,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 629 transitions. [2022-03-03 19:13:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:08,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:08,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:08,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:08,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:08,603 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1464454481, now seen corresponding path program 63 times [2022-03-03 19:13:08,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:08,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118020597] [2022-03-03 19:13:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:08,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:08,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:08,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118020597] [2022-03-03 19:13:08,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118020597] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:08,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299922619] [2022-03-03 19:13:08,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:08,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:08,672 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:08,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 19:13:08,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:08,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:08,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:08,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:08,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:09,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299922619] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:09,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:09,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-03-03 19:13:09,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267777780] [2022-03-03 19:13:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:09,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:09,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:09,158 INFO L87 Difference]: Start difference. First operand 216 states and 629 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:09,385 INFO L93 Difference]: Finished difference Result 375 states and 1035 transitions. [2022-03-03 19:13:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:09,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:09,386 INFO L225 Difference]: With dead ends: 375 [2022-03-03 19:13:09,386 INFO L226 Difference]: Without dead ends: 352 [2022-03-03 19:13:09,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:13:09,386 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:09,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 67 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-03-03 19:13:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 212. [2022-03-03 19:13:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-03-03 19:13:09,389 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-03-03 19:13:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:09,389 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-03-03 19:13:09,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-03-03 19:13:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:09,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:09,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:09,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:09,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:09,590 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:09,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash -262998743, now seen corresponding path program 64 times [2022-03-03 19:13:09,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:09,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658823250] [2022-03-03 19:13:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:09,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:09,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658823250] [2022-03-03 19:13:09,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658823250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:09,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971222206] [2022-03-03 19:13:09,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:09,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:09,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:09,700 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:09,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 19:13:09,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:09,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:09,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:09,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:10,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971222206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:10,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:10,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-03-03 19:13:10,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715855237] [2022-03-03 19:13:10,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:10,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:13:10,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:13:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:10,011 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:10,216 INFO L93 Difference]: Finished difference Result 392 states and 1071 transitions. [2022-03-03 19:13:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:10,216 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:10,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:10,217 INFO L225 Difference]: With dead ends: 392 [2022-03-03 19:13:10,217 INFO L226 Difference]: Without dead ends: 373 [2022-03-03 19:13:10,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:13:10,217 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 161 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:10,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 95 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:10,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-03-03 19:13:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 216. [2022-03-03 19:13:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9348837209302325) internal successors, (631), 215 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 631 transitions. [2022-03-03 19:13:10,221 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 631 transitions. Word has length 18 [2022-03-03 19:13:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:10,221 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 631 transitions. [2022-03-03 19:13:10,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 631 transitions. [2022-03-03 19:13:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:10,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:10,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:10,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:10,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:10,435 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash -424218683, now seen corresponding path program 65 times [2022-03-03 19:13:10,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:10,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339769652] [2022-03-03 19:13:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:10,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:10,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339769652] [2022-03-03 19:13:10,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339769652] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:10,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933546936] [2022-03-03 19:13:10,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:10,483 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:10,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 19:13:10,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:10,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:10,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:10,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:10,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:10,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933546936] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:10,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:10,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2022-03-03 19:13:10,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039660879] [2022-03-03 19:13:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:10,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:10,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:10,824 INFO L87 Difference]: Start difference. First operand 216 states and 631 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:11,049 INFO L93 Difference]: Finished difference Result 396 states and 1071 transitions. [2022-03-03 19:13:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:11,050 INFO L225 Difference]: With dead ends: 396 [2022-03-03 19:13:11,050 INFO L226 Difference]: Without dead ends: 373 [2022-03-03 19:13:11,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:13:11,051 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:11,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-03-03 19:13:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 214. [2022-03-03 19:13:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9295774647887325) internal successors, (624), 213 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 624 transitions. [2022-03-03 19:13:11,056 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 624 transitions. Word has length 18 [2022-03-03 19:13:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:11,056 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 624 transitions. [2022-03-03 19:13:11,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 624 transitions. [2022-03-03 19:13:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:11,056 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:11,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:11,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:11,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:11,276 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1257618227, now seen corresponding path program 66 times [2022-03-03 19:13:11,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:11,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41667057] [2022-03-03 19:13:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:11,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:11,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41667057] [2022-03-03 19:13:11,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41667057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:11,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683414547] [2022-03-03 19:13:11,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:11,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:11,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:11,364 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:11,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 19:13:11,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:11,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:11,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:11,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:11,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:11,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683414547] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:11,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:11,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:13:11,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613227891] [2022-03-03 19:13:11,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:11,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:11,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:11,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:11,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:13:11,828 INFO L87 Difference]: Start difference. First operand 214 states and 624 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:12,037 INFO L93 Difference]: Finished difference Result 361 states and 998 transitions. [2022-03-03 19:13:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:12,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:12,038 INFO L225 Difference]: With dead ends: 361 [2022-03-03 19:13:12,038 INFO L226 Difference]: Without dead ends: 334 [2022-03-03 19:13:12,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:13:12,038 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:12,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 59 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-03-03 19:13:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 212. [2022-03-03 19:13:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-03-03 19:13:12,044 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-03-03 19:13:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:12,044 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-03-03 19:13:12,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-03-03 19:13:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:12,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:12,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:12,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:12,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:12,255 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:12,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1436072243, now seen corresponding path program 67 times [2022-03-03 19:13:12,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:12,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677277860] [2022-03-03 19:13:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:12,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:12,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677277860] [2022-03-03 19:13:12,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677277860] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:12,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885919876] [2022-03-03 19:13:12,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:12,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:12,328 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:12,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 19:13:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:12,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:12,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:12,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:12,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885919876] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:12,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:12,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:13:12,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041167679] [2022-03-03 19:13:12,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:13:12,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:13:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:12,707 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:12,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:12,979 INFO L93 Difference]: Finished difference Result 491 states and 1355 transitions. [2022-03-03 19:13:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:12,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:12,980 INFO L225 Difference]: With dead ends: 491 [2022-03-03 19:13:12,980 INFO L226 Difference]: Without dead ends: 472 [2022-03-03 19:13:12,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:12,981 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 112 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:12,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 123 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:13:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-03 19:13:12,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 218. [2022-03-03 19:13:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9400921658986174) internal successors, (638), 217 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 638 transitions. [2022-03-03 19:13:12,985 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 638 transitions. Word has length 18 [2022-03-03 19:13:12,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:12,985 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 638 transitions. [2022-03-03 19:13:12,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:12,985 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 638 transitions. [2022-03-03 19:13:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:12,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:12,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:13,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-03-03 19:13:13,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2022-03-03 19:13:13,195 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1807164183, now seen corresponding path program 68 times [2022-03-03 19:13:13,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:13,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318114264] [2022-03-03 19:13:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:13,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:13,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:13,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318114264] [2022-03-03 19:13:13,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318114264] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:13,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152205475] [2022-03-03 19:13:13,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:13,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:13,278 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:13,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:13,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:13,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 19:13:13,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:13,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:13,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:13,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152205475] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:13,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:13,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-03 19:13:13,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758460983] [2022-03-03 19:13:13,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:13,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:13:13,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:13:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:13:13,692 INFO L87 Difference]: Start difference. First operand 218 states and 638 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:13,965 INFO L93 Difference]: Finished difference Result 526 states and 1428 transitions. [2022-03-03 19:13:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:13,965 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:13,966 INFO L225 Difference]: With dead ends: 526 [2022-03-03 19:13:13,966 INFO L226 Difference]: Without dead ends: 507 [2022-03-03 19:13:13,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:13:13,967 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 171 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:13,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 120 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:13:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-03 19:13:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 222. [2022-03-03 19:13:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.9592760180995477) internal successors, (654), 221 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 654 transitions. [2022-03-03 19:13:13,971 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 654 transitions. Word has length 18 [2022-03-03 19:13:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:13,971 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 654 transitions. [2022-03-03 19:13:13,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 654 transitions. [2022-03-03 19:13:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:13,971 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:13,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:13,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-03 19:13:14,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-03-03 19:13:14,179 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1645944243, now seen corresponding path program 69 times [2022-03-03 19:13:14,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:14,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503294446] [2022-03-03 19:13:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:14,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:14,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:14,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503294446] [2022-03-03 19:13:14,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503294446] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:14,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139102716] [2022-03-03 19:13:14,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:14,227 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:14,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 19:13:14,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:14,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:14,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:14,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:14,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:14,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139102716] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:14,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:14,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:13:14,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973161806] [2022-03-03 19:13:14,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:14,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:14,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:13:14,539 INFO L87 Difference]: Start difference. First operand 222 states and 654 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:14,676 INFO L93 Difference]: Finished difference Result 489 states and 1342 transitions. [2022-03-03 19:13:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:14,677 INFO L225 Difference]: With dead ends: 489 [2022-03-03 19:13:14,677 INFO L226 Difference]: Without dead ends: 466 [2022-03-03 19:13:14,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:13:14,677 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 91 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:14,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 63 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-03-03 19:13:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 222. [2022-03-03 19:13:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.9411764705882355) internal successors, (650), 221 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 650 transitions. [2022-03-03 19:13:14,681 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 650 transitions. Word has length 18 [2022-03-03 19:13:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:14,681 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 650 transitions. [2022-03-03 19:13:14,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 650 transitions. [2022-03-03 19:13:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:14,681 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:14,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:14,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:14,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-03-03 19:13:14,898 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:14,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1157408529, now seen corresponding path program 70 times [2022-03-03 19:13:14,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:14,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103018518] [2022-03-03 19:13:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:14,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:14,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103018518] [2022-03-03 19:13:14,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103018518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:14,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333120285] [2022-03-03 19:13:14,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:14,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:14,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:14,964 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:14,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 19:13:14,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:14,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:14,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:14,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:15,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:15,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333120285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:15,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:15,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-03-03 19:13:15,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68757358] [2022-03-03 19:13:15,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:15,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:13:15,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:13:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:15,212 INFO L87 Difference]: Start difference. First operand 222 states and 650 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:15,372 INFO L93 Difference]: Finished difference Result 452 states and 1260 transitions. [2022-03-03 19:13:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:15,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:15,373 INFO L225 Difference]: With dead ends: 452 [2022-03-03 19:13:15,373 INFO L226 Difference]: Without dead ends: 433 [2022-03-03 19:13:15,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:15,373 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:15,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 133 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-03 19:13:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 217. [2022-03-03 19:13:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.949074074074074) internal successors, (637), 216 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 637 transitions. [2022-03-03 19:13:15,377 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 637 transitions. Word has length 18 [2022-03-03 19:13:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:15,377 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 637 transitions. [2022-03-03 19:13:15,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 637 transitions. [2022-03-03 19:13:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:15,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:15,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:15,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:15,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:15,594 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2045451247, now seen corresponding path program 71 times [2022-03-03 19:13:15,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:15,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755986455] [2022-03-03 19:13:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:15,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:15,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755986455] [2022-03-03 19:13:15,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755986455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:15,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255631991] [2022-03-03 19:13:15,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:15,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:15,658 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:15,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 19:13:15,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:15,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:15,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:15,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:15,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:16,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255631991] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:16,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:16,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-03-03 19:13:16,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382296449] [2022-03-03 19:13:16,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:16,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 19:13:16,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 19:13:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:16,072 INFO L87 Difference]: Start difference. First operand 217 states and 637 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:16,280 INFO L93 Difference]: Finished difference Result 433 states and 1227 transitions. [2022-03-03 19:13:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:16,281 INFO L225 Difference]: With dead ends: 433 [2022-03-03 19:13:16,281 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:13:16,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:16,281 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:16,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 121 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:13:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:13:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 221. [2022-03-03 19:13:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9863636363636363) internal successors, (657), 220 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 657 transitions. [2022-03-03 19:13:16,284 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 657 transitions. Word has length 18 [2022-03-03 19:13:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:16,284 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 657 transitions. [2022-03-03 19:13:16,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 657 transitions. [2022-03-03 19:13:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:16,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:16,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:16,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-03 19:13:16,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2022-03-03 19:13:16,487 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:16,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2068047795, now seen corresponding path program 72 times [2022-03-03 19:13:16,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:16,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949451314] [2022-03-03 19:13:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:16,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:16,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949451314] [2022-03-03 19:13:16,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949451314] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:16,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773448489] [2022-03-03 19:13:16,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:16,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:16,536 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:16,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 19:13:16,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:16,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:16,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:16,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:16,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:16,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773448489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:16,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:16,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-03-03 19:13:16,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053723679] [2022-03-03 19:13:16,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:16,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:16,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:16,874 INFO L87 Difference]: Start difference. First operand 221 states and 657 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:17,053 INFO L93 Difference]: Finished difference Result 404 states and 1161 transitions. [2022-03-03 19:13:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:17,054 INFO L225 Difference]: With dead ends: 404 [2022-03-03 19:13:17,054 INFO L226 Difference]: Without dead ends: 385 [2022-03-03 19:13:17,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:17,054 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:17,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 105 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-03-03 19:13:17,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 213. [2022-03-03 19:13:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9292452830188678) internal successors, (621), 212 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 621 transitions. [2022-03-03 19:13:17,058 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 621 transitions. Word has length 18 [2022-03-03 19:13:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:17,058 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 621 transitions. [2022-03-03 19:13:17,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 621 transitions. [2022-03-03 19:13:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:17,059 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:17,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:17,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:17,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:17,267 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2074187181, now seen corresponding path program 73 times [2022-03-03 19:13:17,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:17,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331001742] [2022-03-03 19:13:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:17,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:17,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331001742] [2022-03-03 19:13:17,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331001742] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:17,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636803778] [2022-03-03 19:13:17,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:17,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:17,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:17,342 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:17,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 19:13:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:17,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:17,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:17,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636803778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:17,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:17,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:13:17,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522394792] [2022-03-03 19:13:17,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:17,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:13:17,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:17,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:13:17,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:17,615 INFO L87 Difference]: Start difference. First operand 213 states and 621 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:17,788 INFO L93 Difference]: Finished difference Result 502 states and 1407 transitions. [2022-03-03 19:13:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:17,789 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:17,789 INFO L225 Difference]: With dead ends: 502 [2022-03-03 19:13:17,789 INFO L226 Difference]: Without dead ends: 483 [2022-03-03 19:13:17,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:17,790 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 139 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:17,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 131 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-03-03 19:13:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 219. [2022-03-03 19:13:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9724770642201834) internal successors, (648), 218 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 648 transitions. [2022-03-03 19:13:17,793 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 648 transitions. Word has length 18 [2022-03-03 19:13:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:17,793 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 648 transitions. [2022-03-03 19:13:17,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 648 transitions. [2022-03-03 19:13:17,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:17,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:17,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:17,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-03 19:13:18,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:18,010 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2059560175, now seen corresponding path program 74 times [2022-03-03 19:13:18,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:18,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955253681] [2022-03-03 19:13:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:18,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:18,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:18,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955253681] [2022-03-03 19:13:18,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955253681] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:18,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487941803] [2022-03-03 19:13:18,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:18,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:18,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:18,061 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:18,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 19:13:18,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:18,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:18,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:18,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:18,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487941803] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:18,405 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:18,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:13:18,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572798291] [2022-03-03 19:13:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:18,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:18,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:18,406 INFO L87 Difference]: Start difference. First operand 219 states and 648 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:18,579 INFO L93 Difference]: Finished difference Result 490 states and 1367 transitions. [2022-03-03 19:13:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:18,580 INFO L225 Difference]: With dead ends: 490 [2022-03-03 19:13:18,581 INFO L226 Difference]: Without dead ends: 467 [2022-03-03 19:13:18,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:13:18,581 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:18,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 87 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-03-03 19:13:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 221. [2022-03-03 19:13:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.95) internal successors, (649), 220 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 649 transitions. [2022-03-03 19:13:18,584 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 649 transitions. Word has length 18 [2022-03-03 19:13:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:18,584 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 649 transitions. [2022-03-03 19:13:18,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 649 transitions. [2022-03-03 19:13:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:18,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:18,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:18,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-03 19:13:18,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-03-03 19:13:18,802 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash 58909463, now seen corresponding path program 75 times [2022-03-03 19:13:18,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:18,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061906255] [2022-03-03 19:13:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:18,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:18,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:18,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061906255] [2022-03-03 19:13:18,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061906255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:18,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801521862] [2022-03-03 19:13:18,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:18,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:18,851 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:18,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 19:13:18,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:18,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:18,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:18,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:18,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:19,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801521862] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:19,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:19,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-03-03 19:13:19,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570089987] [2022-03-03 19:13:19,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:19,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 19:13:19,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 19:13:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:19,159 INFO L87 Difference]: Start difference. First operand 221 states and 649 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:19,353 INFO L93 Difference]: Finished difference Result 505 states and 1410 transitions. [2022-03-03 19:13:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:19,353 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:19,354 INFO L225 Difference]: With dead ends: 505 [2022-03-03 19:13:19,354 INFO L226 Difference]: Without dead ends: 486 [2022-03-03 19:13:19,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:13:19,355 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 193 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:19,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 150 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-03-03 19:13:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 218. [2022-03-03 19:13:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9769585253456223) internal successors, (646), 217 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 646 transitions. [2022-03-03 19:13:19,358 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 646 transitions. Word has length 18 [2022-03-03 19:13:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:19,358 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 646 transitions. [2022-03-03 19:13:19,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 646 transitions. [2022-03-03 19:13:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:19,358 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:19,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:19,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-03-03 19:13:19,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:19,562 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2089850729, now seen corresponding path program 76 times [2022-03-03 19:13:19,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:19,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561399862] [2022-03-03 19:13:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:19,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:19,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561399862] [2022-03-03 19:13:19,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561399862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:19,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827785458] [2022-03-03 19:13:19,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:19,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:19,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:19,616 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:19,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 19:13:19,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:19,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:19,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:19,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:19,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:19,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827785458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:19,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:19,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:13:19,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723277523] [2022-03-03 19:13:19,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:19,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:13:19,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:13:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:19,907 INFO L87 Difference]: Start difference. First operand 218 states and 646 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:20,028 INFO L93 Difference]: Finished difference Result 486 states and 1381 transitions. [2022-03-03 19:13:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:20,029 INFO L225 Difference]: With dead ends: 486 [2022-03-03 19:13:20,029 INFO L226 Difference]: Without dead ends: 467 [2022-03-03 19:13:20,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:20,030 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:20,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 117 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-03-03 19:13:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 214. [2022-03-03 19:13:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9389671361502345) internal successors, (626), 213 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 626 transitions. [2022-03-03 19:13:20,033 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 626 transitions. Word has length 18 [2022-03-03 19:13:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:20,033 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 626 transitions. [2022-03-03 19:13:20,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 626 transitions. [2022-03-03 19:13:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:20,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:20,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:20,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:20,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:20,250 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:20,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1200074419, now seen corresponding path program 77 times [2022-03-03 19:13:20,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:20,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014707228] [2022-03-03 19:13:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:20,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:20,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:20,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014707228] [2022-03-03 19:13:20,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014707228] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:20,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308108030] [2022-03-03 19:13:20,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:20,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:20,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:20,287 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:20,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 19:13:20,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:20,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:20,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:20,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:20,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:20,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308108030] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:20,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:20,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:20,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724898328] [2022-03-03 19:13:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:20,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:20,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:20,593 INFO L87 Difference]: Start difference. First operand 214 states and 626 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:20,748 INFO L93 Difference]: Finished difference Result 443 states and 1246 transitions. [2022-03-03 19:13:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:20,748 INFO L225 Difference]: With dead ends: 443 [2022-03-03 19:13:20,748 INFO L226 Difference]: Without dead ends: 420 [2022-03-03 19:13:20,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:20,749 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:20,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 68 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-03 19:13:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 222. [2022-03-03 19:13:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.932126696832579) internal successors, (648), 221 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 648 transitions. [2022-03-03 19:13:20,752 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 648 transitions. Word has length 18 [2022-03-03 19:13:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:20,752 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 648 transitions. [2022-03-03 19:13:20,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 648 transitions. [2022-03-03 19:13:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:20,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:20,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:20,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:20,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:20,969 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash 21957999, now seen corresponding path program 78 times [2022-03-03 19:13:20,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:20,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788186252] [2022-03-03 19:13:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:21,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:21,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788186252] [2022-03-03 19:13:21,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788186252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:21,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869713234] [2022-03-03 19:13:21,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:21,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:21,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:21,049 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:21,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 19:13:21,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:21,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:21,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:21,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:21,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:21,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869713234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:21,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:21,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-03 19:13:21,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430201018] [2022-03-03 19:13:21,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:21,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:13:21,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:13:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:21,507 INFO L87 Difference]: Start difference. First operand 222 states and 648 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:21,723 INFO L93 Difference]: Finished difference Result 427 states and 1216 transitions. [2022-03-03 19:13:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:21,724 INFO L225 Difference]: With dead ends: 427 [2022-03-03 19:13:21,724 INFO L226 Difference]: Without dead ends: 408 [2022-03-03 19:13:21,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:21,724 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:21,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 103 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-03 19:13:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 212. [2022-03-03 19:13:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-03-03 19:13:21,727 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-03-03 19:13:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:21,728 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-03-03 19:13:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-03-03 19:13:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:21,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:21,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:21,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:21,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:21,935 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -325806739, now seen corresponding path program 79 times [2022-03-03 19:13:21,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:21,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501935873] [2022-03-03 19:13:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:22,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:22,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501935873] [2022-03-03 19:13:22,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501935873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:22,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977074922] [2022-03-03 19:13:22,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:22,029 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:22,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 19:13:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:22,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:22,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:22,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977074922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:22,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:22,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-03-03 19:13:22,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798973721] [2022-03-03 19:13:22,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:22,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:13:22,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:13:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:22,480 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:22,761 INFO L93 Difference]: Finished difference Result 424 states and 1183 transitions. [2022-03-03 19:13:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:22,762 INFO L225 Difference]: With dead ends: 424 [2022-03-03 19:13:22,762 INFO L226 Difference]: Without dead ends: 405 [2022-03-03 19:13:22,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:22,763 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 135 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:22,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 117 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-03-03 19:13:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 217. [2022-03-03 19:13:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9444444444444446) internal successors, (636), 216 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 636 transitions. [2022-03-03 19:13:22,766 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 636 transitions. Word has length 18 [2022-03-03 19:13:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:22,766 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 636 transitions. [2022-03-03 19:13:22,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 636 transitions. [2022-03-03 19:13:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:22,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:22,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:22,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-03 19:13:22,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:22,975 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -487026679, now seen corresponding path program 80 times [2022-03-03 19:13:22,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:22,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449677337] [2022-03-03 19:13:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:23,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:23,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449677337] [2022-03-03 19:13:23,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449677337] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:23,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245923061] [2022-03-03 19:13:23,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:23,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:23,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:23,038 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:23,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 19:13:23,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:23,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:23,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:23,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:23,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:23,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245923061] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:23,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:23,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:13:23,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438499623] [2022-03-03 19:13:23,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:23,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:23,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:23,398 INFO L87 Difference]: Start difference. First operand 217 states and 636 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:23,566 INFO L93 Difference]: Finished difference Result 428 states and 1183 transitions. [2022-03-03 19:13:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:23,567 INFO L225 Difference]: With dead ends: 428 [2022-03-03 19:13:23,567 INFO L226 Difference]: Without dead ends: 405 [2022-03-03 19:13:23,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:23,568 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:23,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 68 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-03-03 19:13:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 215. [2022-03-03 19:13:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.939252336448598) internal successors, (629), 214 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 629 transitions. [2022-03-03 19:13:23,571 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 629 transitions. Word has length 18 [2022-03-03 19:13:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:23,571 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 629 transitions. [2022-03-03 19:13:23,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 629 transitions. [2022-03-03 19:13:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:23,571 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:23,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:23,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-03-03 19:13:23,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2022-03-03 19:13:23,790 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1194810231, now seen corresponding path program 81 times [2022-03-03 19:13:23,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:23,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820885200] [2022-03-03 19:13:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:23,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:23,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820885200] [2022-03-03 19:13:23,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820885200] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:23,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220589879] [2022-03-03 19:13:23,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:23,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:23,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:23,833 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:23,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 19:13:23,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:23,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:23,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:23,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:24,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220589879] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:24,193 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:24,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:24,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152377139] [2022-03-03 19:13:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:24,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:24,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:24,194 INFO L87 Difference]: Start difference. First operand 215 states and 629 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:24,372 INFO L93 Difference]: Finished difference Result 422 states and 1164 transitions. [2022-03-03 19:13:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:24,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:24,373 INFO L225 Difference]: With dead ends: 422 [2022-03-03 19:13:24,373 INFO L226 Difference]: Without dead ends: 395 [2022-03-03 19:13:24,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:24,373 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:24,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 66 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-03 19:13:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 213. [2022-03-03 19:13:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9339622641509435) internal successors, (622), 212 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 622 transitions. [2022-03-03 19:13:24,376 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 622 transitions. Word has length 18 [2022-03-03 19:13:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:24,376 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 622 transitions. [2022-03-03 19:13:24,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 622 transitions. [2022-03-03 19:13:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:24,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:24,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:24,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:24,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-03-03 19:13:24,592 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:24,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1160002025, now seen corresponding path program 82 times [2022-03-03 19:13:24,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:24,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212111301] [2022-03-03 19:13:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:24,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:24,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212111301] [2022-03-03 19:13:24,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212111301] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:24,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775067321] [2022-03-03 19:13:24,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:24,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:24,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:24,642 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:24,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 19:13:24,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:24,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:24,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:24,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:24,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:24,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775067321] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:24,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:24,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2022-03-03 19:13:24,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52070535] [2022-03-03 19:13:24,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:24,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:13:24,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:13:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:24,911 INFO L87 Difference]: Start difference. First operand 213 states and 622 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:25,081 INFO L93 Difference]: Finished difference Result 441 states and 1207 transitions. [2022-03-03 19:13:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:25,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:25,084 INFO L225 Difference]: With dead ends: 441 [2022-03-03 19:13:25,084 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:13:25,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:25,084 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:25,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 112 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:13:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 219. [2022-03-03 19:13:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.977064220183486) internal successors, (649), 218 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 649 transitions. [2022-03-03 19:13:25,088 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 649 transitions. Word has length 18 [2022-03-03 19:13:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:25,088 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 649 transitions. [2022-03-03 19:13:25,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 649 transitions. [2022-03-03 19:13:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:25,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:25,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:25,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-03 19:13:25,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-03-03 19:13:25,307 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 998782085, now seen corresponding path program 83 times [2022-03-03 19:13:25,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:25,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92274947] [2022-03-03 19:13:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:25,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:25,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:25,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92274947] [2022-03-03 19:13:25,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92274947] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:25,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844398601] [2022-03-03 19:13:25,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:25,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:25,369 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:25,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 19:13:25,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:25,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:25,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:25,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:25,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:25,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844398601] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:25,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:25,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:25,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762033118] [2022-03-03 19:13:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:25,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:25,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:25,784 INFO L87 Difference]: Start difference. First operand 219 states and 649 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:26,017 INFO L93 Difference]: Finished difference Result 445 states and 1207 transitions. [2022-03-03 19:13:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:26,018 INFO L225 Difference]: With dead ends: 445 [2022-03-03 19:13:26,018 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:13:26,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:26,019 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:26,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 76 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:13:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 221. [2022-03-03 19:13:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9545454545454546) internal successors, (650), 220 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 650 transitions. [2022-03-03 19:13:26,022 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 650 transitions. Word has length 18 [2022-03-03 19:13:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:26,022 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 650 transitions. [2022-03-03 19:13:26,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 650 transitions. [2022-03-03 19:13:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:26,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:26,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:26,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-03-03 19:13:26,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:26,223 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1001868627, now seen corresponding path program 84 times [2022-03-03 19:13:26,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:26,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083320262] [2022-03-03 19:13:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:26,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:26,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083320262] [2022-03-03 19:13:26,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083320262] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:26,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074692832] [2022-03-03 19:13:26,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:26,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:26,271 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:26,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 19:13:26,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:26,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:26,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:26,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:26,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:26,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074692832] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:26,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:26,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-03-03 19:13:26,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226830500] [2022-03-03 19:13:26,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:26,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 19:13:26,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 19:13:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:26,583 INFO L87 Difference]: Start difference. First operand 221 states and 650 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:26,765 INFO L93 Difference]: Finished difference Result 414 states and 1142 transitions. [2022-03-03 19:13:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:26,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:26,766 INFO L225 Difference]: With dead ends: 414 [2022-03-03 19:13:26,766 INFO L226 Difference]: Without dead ends: 395 [2022-03-03 19:13:26,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:13:26,766 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 185 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:26,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 146 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-03 19:13:26,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 218. [2022-03-03 19:13:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9815668202764978) internal successors, (647), 217 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 647 transitions. [2022-03-03 19:13:26,769 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 647 transitions. Word has length 18 [2022-03-03 19:13:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:26,769 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 647 transitions. [2022-03-03 19:13:26,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 647 transitions. [2022-03-03 19:13:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:26,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:26,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:26,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-03-03 19:13:26,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:26,986 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1144338477, now seen corresponding path program 85 times [2022-03-03 19:13:26,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:26,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044300926] [2022-03-03 19:13:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:27,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044300926] [2022-03-03 19:13:27,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044300926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:27,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770574230] [2022-03-03 19:13:27,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:27,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:27,023 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:27,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 19:13:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:27,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770574230] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:27,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:27,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-03-03 19:13:27,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836208508] [2022-03-03 19:13:27,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:27,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 19:13:27,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 19:13:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:27,305 INFO L87 Difference]: Start difference. First operand 218 states and 647 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:27,417 INFO L93 Difference]: Finished difference Result 386 states and 1091 transitions. [2022-03-03 19:13:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:27,417 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:13:27,417 INFO L226 Difference]: Without dead ends: 367 [2022-03-03 19:13:27,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:27,418 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 81 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:27,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-03 19:13:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 214. [2022-03-03 19:13:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.943661971830986) internal successors, (627), 213 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 627 transitions. [2022-03-03 19:13:27,421 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 627 transitions. Word has length 18 [2022-03-03 19:13:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:27,421 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 627 transitions. [2022-03-03 19:13:27,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 627 transitions. [2022-03-03 19:13:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:27,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:27,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:27,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-03 19:13:27,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:27,639 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash 139296329, now seen corresponding path program 86 times [2022-03-03 19:13:27,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:27,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624085876] [2022-03-03 19:13:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:27,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:27,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624085876] [2022-03-03 19:13:27,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624085876] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:27,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402541327] [2022-03-03 19:13:27,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:27,678 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:27,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 19:13:27,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:27,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:27,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:27,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402541327] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:27,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:27,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:27,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021373226] [2022-03-03 19:13:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:27,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:27,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:27,994 INFO L87 Difference]: Start difference. First operand 214 states and 627 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:28,143 INFO L93 Difference]: Finished difference Result 422 states and 1166 transitions. [2022-03-03 19:13:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:28,144 INFO L225 Difference]: With dead ends: 422 [2022-03-03 19:13:28,144 INFO L226 Difference]: Without dead ends: 399 [2022-03-03 19:13:28,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:28,144 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:28,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-03 19:13:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 222. [2022-03-03 19:13:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.936651583710407) internal successors, (649), 221 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 649 transitions. [2022-03-03 19:13:28,156 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 649 transitions. Word has length 18 [2022-03-03 19:13:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:28,156 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 649 transitions. [2022-03-03 19:13:28,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 649 transitions. [2022-03-03 19:13:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:28,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:28,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:28,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:28,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-03-03 19:13:28,373 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1038820091, now seen corresponding path program 87 times [2022-03-03 19:13:28,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:28,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988405781] [2022-03-03 19:13:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:28,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:28,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988405781] [2022-03-03 19:13:28,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988405781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:28,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172790488] [2022-03-03 19:13:28,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:28,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:28,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:28,429 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:28,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 19:13:28,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:28,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:28,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:28,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:28,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:28,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172790488] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:28,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:28,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-03 19:13:28,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398249001] [2022-03-03 19:13:28,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:28,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:13:28,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:13:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:28,815 INFO L87 Difference]: Start difference. First operand 222 states and 649 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:29,044 INFO L93 Difference]: Finished difference Result 406 states and 1136 transitions. [2022-03-03 19:13:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:29,045 INFO L225 Difference]: With dead ends: 406 [2022-03-03 19:13:29,045 INFO L226 Difference]: Without dead ends: 387 [2022-03-03 19:13:29,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:13:29,046 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:29,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 120 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-03-03 19:13:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 213. [2022-03-03 19:13:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9339622641509435) internal successors, (622), 212 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 622 transitions. [2022-03-03 19:13:29,048 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 622 transitions. Word has length 18 [2022-03-03 19:13:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:29,049 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 622 transitions. [2022-03-03 19:13:29,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 622 transitions. [2022-03-03 19:13:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:29,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:29,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:29,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:29,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable207 [2022-03-03 19:13:29,259 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 320555571, now seen corresponding path program 88 times [2022-03-03 19:13:29,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:29,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849610014] [2022-03-03 19:13:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:29,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:29,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:29,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849610014] [2022-03-03 19:13:29,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849610014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:29,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197893047] [2022-03-03 19:13:29,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:29,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:29,302 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:29,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-03 19:13:29,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:29,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:29,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:29,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:29,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197893047] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:29,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:29,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 14 [2022-03-03 19:13:29,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923705066] [2022-03-03 19:13:29,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:29,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:29,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:29,645 INFO L87 Difference]: Start difference. First operand 213 states and 622 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:29,835 INFO L93 Difference]: Finished difference Result 366 states and 1018 transitions. [2022-03-03 19:13:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:29,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:29,835 INFO L225 Difference]: With dead ends: 366 [2022-03-03 19:13:29,836 INFO L226 Difference]: Without dead ends: 339 [2022-03-03 19:13:29,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:13:29,836 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:29,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 75 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-03-03 19:13:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 215. [2022-03-03 19:13:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.9299065420560746) internal successors, (627), 214 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 627 transitions. [2022-03-03 19:13:29,839 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 627 transitions. Word has length 18 [2022-03-03 19:13:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:29,839 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 627 transitions. [2022-03-03 19:13:29,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 627 transitions. [2022-03-03 19:13:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:29,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:29,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:29,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:30,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:30,045 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1476863543, now seen corresponding path program 89 times [2022-03-03 19:13:30,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:30,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960620690] [2022-03-03 19:13:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:30,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:30,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960620690] [2022-03-03 19:13:30,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960620690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:30,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939803686] [2022-03-03 19:13:30,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:30,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:30,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:30,114 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:30,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-03 19:13:30,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:30,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:30,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:30,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:30,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:30,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939803686] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:30,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:13:30,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-03-03 19:13:30,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014283337] [2022-03-03 19:13:30,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:30,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:30,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:30,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:30,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:30,453 INFO L87 Difference]: Start difference. First operand 215 states and 627 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:30,640 INFO L93 Difference]: Finished difference Result 358 states and 1000 transitions. [2022-03-03 19:13:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:30,641 INFO L225 Difference]: With dead ends: 358 [2022-03-03 19:13:30,641 INFO L226 Difference]: Without dead ends: 335 [2022-03-03 19:13:30,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:30,641 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:30,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 75 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-03-03 19:13:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 223. [2022-03-03 19:13:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.9234234234234235) internal successors, (649), 222 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 649 transitions. [2022-03-03 19:13:30,645 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 649 transitions. Word has length 18 [2022-03-03 19:13:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:30,645 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 649 transitions. [2022-03-03 19:13:30,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 649 transitions. [2022-03-03 19:13:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:13:30,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:30,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:30,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:30,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:30,862 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 298747123, now seen corresponding path program 90 times [2022-03-03 19:13:30,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:30,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115887540] [2022-03-03 19:13:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:30,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:30,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:30,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115887540] [2022-03-03 19:13:30,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115887540] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:30,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53085302] [2022-03-03 19:13:30,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:30,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:30,905 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:30,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-03 19:13:30,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:30,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:30,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:13:30,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:31,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:31,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53085302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:31,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:31,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-03 19:13:31,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944592585] [2022-03-03 19:13:31,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:31,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:13:31,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:13:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:13:31,268 INFO L87 Difference]: Start difference. First operand 223 states and 649 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:31,451 INFO L93 Difference]: Finished difference Result 333 states and 948 transitions. [2022-03-03 19:13:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:13:31,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-03 19:13:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:31,452 INFO L225 Difference]: With dead ends: 333 [2022-03-03 19:13:31,452 INFO L226 Difference]: Without dead ends: 314 [2022-03-03 19:13:31,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:13:31,452 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:31,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 112 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-03-03 19:13:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 212. [2022-03-03 19:13:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.924170616113744) internal successors, (617), 211 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 617 transitions. [2022-03-03 19:13:31,457 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 617 transitions. Word has length 18 [2022-03-03 19:13:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:31,457 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 617 transitions. [2022-03-03 19:13:31,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 617 transitions. [2022-03-03 19:13:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:31,457 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:31,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:31,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-03-03 19:13:31,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-03-03 19:13:31,674 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:31,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1433800072, now seen corresponding path program 1 times [2022-03-03 19:13:31,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:31,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667648376] [2022-03-03 19:13:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:31,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:31,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667648376] [2022-03-03 19:13:31,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667648376] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:31,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871539504] [2022-03-03 19:13:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:31,698 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:31,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-03 19:13:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:31,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:31,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:31,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:31,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871539504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:31,784 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:31,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:31,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265571856] [2022-03-03 19:13:31,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:31,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:31,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:31,787 INFO L87 Difference]: Start difference. First operand 212 states and 617 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:31,861 INFO L93 Difference]: Finished difference Result 306 states and 874 transitions. [2022-03-03 19:13:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:31,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:31,862 INFO L225 Difference]: With dead ends: 306 [2022-03-03 19:13:31,862 INFO L226 Difference]: Without dead ends: 282 [2022-03-03 19:13:31,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:31,862 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:31,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 63 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-03-03 19:13:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 219. [2022-03-03 19:13:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.926605504587156) internal successors, (638), 218 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 638 transitions. [2022-03-03 19:13:31,865 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 638 transitions. Word has length 19 [2022-03-03 19:13:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:31,865 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 638 transitions. [2022-03-03 19:13:31,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 638 transitions. [2022-03-03 19:13:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:31,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:31,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:31,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:32,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:32,083 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1600195604, now seen corresponding path program 1 times [2022-03-03 19:13:32,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:32,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153294296] [2022-03-03 19:13:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:32,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153294296] [2022-03-03 19:13:32,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153294296] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:32,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953156004] [2022-03-03 19:13:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:32,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:32,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:32,111 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:32,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-03 19:13:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:32,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:32,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953156004] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:32,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:32,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:32,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738787951] [2022-03-03 19:13:32,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:32,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:32,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:32,211 INFO L87 Difference]: Start difference. First operand 219 states and 638 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:32,290 INFO L93 Difference]: Finished difference Result 359 states and 1037 transitions. [2022-03-03 19:13:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:32,291 INFO L225 Difference]: With dead ends: 359 [2022-03-03 19:13:32,291 INFO L226 Difference]: Without dead ends: 359 [2022-03-03 19:13:32,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:32,292 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:32,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 69 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-03 19:13:32,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 230. [2022-03-03 19:13:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.978165938864629) internal successors, (682), 229 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 682 transitions. [2022-03-03 19:13:32,295 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 682 transitions. Word has length 19 [2022-03-03 19:13:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:32,295 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 682 transitions. [2022-03-03 19:13:32,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 682 transitions. [2022-03-03 19:13:32,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:32,295 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:32,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:32,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-03 19:13:32,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-03-03 19:13:32,499 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash -302555080, now seen corresponding path program 2 times [2022-03-03 19:13:32,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:32,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124891699] [2022-03-03 19:13:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:32,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124891699] [2022-03-03 19:13:32,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124891699] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:32,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464475645] [2022-03-03 19:13:32,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:32,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:32,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:32,534 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:32,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-03 19:13:32,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:32,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:32,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:32,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464475645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:32,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:32,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:32,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039690373] [2022-03-03 19:13:32,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:32,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:32,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:32,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:32,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:32,702 INFO L87 Difference]: Start difference. First operand 230 states and 682 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:32,862 INFO L93 Difference]: Finished difference Result 356 states and 1028 transitions. [2022-03-03 19:13:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:32,863 INFO L225 Difference]: With dead ends: 356 [2022-03-03 19:13:32,863 INFO L226 Difference]: Without dead ends: 356 [2022-03-03 19:13:32,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:32,863 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 62 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:32,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 100 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-03 19:13:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 238. [2022-03-03 19:13:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.029535864978903) internal successors, (718), 237 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 718 transitions. [2022-03-03 19:13:32,886 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 718 transitions. Word has length 19 [2022-03-03 19:13:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:32,886 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 718 transitions. [2022-03-03 19:13:32,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 718 transitions. [2022-03-03 19:13:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:32,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:32,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:32,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:33,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-03-03 19:13:33,095 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 331793336, now seen corresponding path program 2 times [2022-03-03 19:13:33,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:33,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191165000] [2022-03-03 19:13:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:33,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:33,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:33,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191165000] [2022-03-03 19:13:33,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191165000] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:33,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637640652] [2022-03-03 19:13:33,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:33,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:33,129 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:33,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-03 19:13:33,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:33,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:33,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:33,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:33,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:33,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637640652] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:33,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:33,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:33,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384564123] [2022-03-03 19:13:33,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:33,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:33,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:33,281 INFO L87 Difference]: Start difference. First operand 238 states and 718 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:33,385 INFO L93 Difference]: Finished difference Result 375 states and 1077 transitions. [2022-03-03 19:13:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:33,386 INFO L225 Difference]: With dead ends: 375 [2022-03-03 19:13:33,386 INFO L226 Difference]: Without dead ends: 367 [2022-03-03 19:13:33,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:33,386 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:33,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 60 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-03 19:13:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 250. [2022-03-03 19:13:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0281124497991967) internal successors, (754), 249 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 754 transitions. [2022-03-03 19:13:33,389 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 754 transitions. Word has length 19 [2022-03-03 19:13:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:33,389 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 754 transitions. [2022-03-03 19:13:33,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 754 transitions. [2022-03-03 19:13:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:33,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:33,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:33,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:33,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2022-03-03 19:13:33,603 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:33,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 291496274, now seen corresponding path program 3 times [2022-03-03 19:13:33,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:33,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745804666] [2022-03-03 19:13:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:33,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:33,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745804666] [2022-03-03 19:13:33,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745804666] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:33,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111111746] [2022-03-03 19:13:33,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:33,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:33,634 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:33,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-03 19:13:33,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:33,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:33,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:33,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:33,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111111746] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:33,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:33,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:33,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604871091] [2022-03-03 19:13:33,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:33,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:33,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:33,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:33,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:33,804 INFO L87 Difference]: Start difference. First operand 250 states and 754 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:33,944 INFO L93 Difference]: Finished difference Result 330 states and 966 transitions. [2022-03-03 19:13:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:33,945 INFO L225 Difference]: With dead ends: 330 [2022-03-03 19:13:33,945 INFO L226 Difference]: Without dead ends: 321 [2022-03-03 19:13:33,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:33,945 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:33,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 101 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-03 19:13:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 250. [2022-03-03 19:13:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0120481927710845) internal successors, (750), 249 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 750 transitions. [2022-03-03 19:13:33,949 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 750 transitions. Word has length 19 [2022-03-03 19:13:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:33,949 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 750 transitions. [2022-03-03 19:13:33,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 750 transitions. [2022-03-03 19:13:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:33,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:33,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:33,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-03-03 19:13:34,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:34,159 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:34,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1662671820, now seen corresponding path program 3 times [2022-03-03 19:13:34,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:34,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315581914] [2022-03-03 19:13:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:34,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:34,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315581914] [2022-03-03 19:13:34,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315581914] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:34,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132219485] [2022-03-03 19:13:34,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:34,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:34,196 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:34,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-03 19:13:34,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:34,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:34,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:34,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132219485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:34,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:34,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:34,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009680003] [2022-03-03 19:13:34,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:34,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:34,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:34,339 INFO L87 Difference]: Start difference. First operand 250 states and 750 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:34,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:34,473 INFO L93 Difference]: Finished difference Result 351 states and 1024 transitions. [2022-03-03 19:13:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:34,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:34,474 INFO L225 Difference]: With dead ends: 351 [2022-03-03 19:13:34,474 INFO L226 Difference]: Without dead ends: 351 [2022-03-03 19:13:34,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:34,474 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:34,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 83 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-03-03 19:13:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 238. [2022-03-03 19:13:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.9957805907172994) internal successors, (710), 237 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 710 transitions. [2022-03-03 19:13:34,477 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 710 transitions. Word has length 19 [2022-03-03 19:13:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:34,477 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 710 transitions. [2022-03-03 19:13:34,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 710 transitions. [2022-03-03 19:13:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:34,478 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:34,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:34,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-03-03 19:13:34,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:34,687 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1176400376, now seen corresponding path program 4 times [2022-03-03 19:13:34,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:34,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45079585] [2022-03-03 19:13:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:34,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45079585] [2022-03-03 19:13:34,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45079585] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:34,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72403735] [2022-03-03 19:13:34,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:34,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:34,721 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:34,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-03 19:13:34,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:34,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:34,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:34,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72403735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:34,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:34,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:34,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212451807] [2022-03-03 19:13:34,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:34,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:34,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:34,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:34,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:34,862 INFO L87 Difference]: Start difference. First operand 238 states and 710 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:34,973 INFO L93 Difference]: Finished difference Result 387 states and 1134 transitions. [2022-03-03 19:13:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:34,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:34,974 INFO L225 Difference]: With dead ends: 387 [2022-03-03 19:13:34,974 INFO L226 Difference]: Without dead ends: 387 [2022-03-03 19:13:34,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:34,974 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:34,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 60 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-03-03 19:13:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 246. [2022-03-03 19:13:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0285714285714285) internal successors, (742), 245 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 742 transitions. [2022-03-03 19:13:34,977 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 742 transitions. Word has length 19 [2022-03-03 19:13:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:34,978 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 742 transitions. [2022-03-03 19:13:34,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 742 transitions. [2022-03-03 19:13:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:34,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:34,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:34,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:35,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2022-03-03 19:13:35,187 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:35,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1095412126, now seen corresponding path program 4 times [2022-03-03 19:13:35,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:35,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807553032] [2022-03-03 19:13:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:35,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:35,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807553032] [2022-03-03 19:13:35,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807553032] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:35,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052380411] [2022-03-03 19:13:35,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:35,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:35,217 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:35,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-03 19:13:35,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:35,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:35,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:35,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:35,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:35,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052380411] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:35,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:35,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:35,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349455923] [2022-03-03 19:13:35,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:35,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:35,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:35,348 INFO L87 Difference]: Start difference. First operand 246 states and 742 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:35,456 INFO L93 Difference]: Finished difference Result 325 states and 953 transitions. [2022-03-03 19:13:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:35,457 INFO L225 Difference]: With dead ends: 325 [2022-03-03 19:13:35,457 INFO L226 Difference]: Without dead ends: 309 [2022-03-03 19:13:35,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:35,457 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:35,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 63 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-03-03 19:13:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 246. [2022-03-03 19:13:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.012244897959184) internal successors, (738), 245 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 738 transitions. [2022-03-03 19:13:35,460 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 738 transitions. Word has length 19 [2022-03-03 19:13:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:35,460 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 738 transitions. [2022-03-03 19:13:35,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 738 transitions. [2022-03-03 19:13:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:35,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:35,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:35,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:35,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:35,661 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash 285190242, now seen corresponding path program 5 times [2022-03-03 19:13:35,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:35,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873841306] [2022-03-03 19:13:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:35,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:35,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873841306] [2022-03-03 19:13:35,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873841306] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:35,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877035536] [2022-03-03 19:13:35,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:35,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:35,702 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:35,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-03 19:13:35,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:35,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:35,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:35,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:35,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877035536] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:35,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:35,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:35,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309145728] [2022-03-03 19:13:35,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:35,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:35,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:35,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:35,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:35,852 INFO L87 Difference]: Start difference. First operand 246 states and 738 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:35,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:35,962 INFO L93 Difference]: Finished difference Result 396 states and 1156 transitions. [2022-03-03 19:13:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:35,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:35,963 INFO L225 Difference]: With dead ends: 396 [2022-03-03 19:13:35,963 INFO L226 Difference]: Without dead ends: 396 [2022-03-03 19:13:35,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:35,963 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:35,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 56 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-03 19:13:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 250. [2022-03-03 19:13:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0441767068273093) internal successors, (758), 249 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 758 transitions. [2022-03-03 19:13:35,966 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 758 transitions. Word has length 19 [2022-03-03 19:13:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:35,966 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 758 transitions. [2022-03-03 19:13:35,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 758 transitions. [2022-03-03 19:13:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:35,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:35,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:35,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-03-03 19:13:36,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:36,179 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash 919538658, now seen corresponding path program 5 times [2022-03-03 19:13:36,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:36,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303554487] [2022-03-03 19:13:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:36,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:36,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303554487] [2022-03-03 19:13:36,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303554487] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:36,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996980298] [2022-03-03 19:13:36,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:36,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:36,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:36,220 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:36,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-03 19:13:36,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:36,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:36,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:36,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:36,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:36,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996980298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:36,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:36,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:36,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113893490] [2022-03-03 19:13:36,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:36,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:36,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:36,389 INFO L87 Difference]: Start difference. First operand 250 states and 758 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:36,532 INFO L93 Difference]: Finished difference Result 372 states and 1080 transitions. [2022-03-03 19:13:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:36,533 INFO L225 Difference]: With dead ends: 372 [2022-03-03 19:13:36,533 INFO L226 Difference]: Without dead ends: 364 [2022-03-03 19:13:36,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:36,533 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:36,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 99 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-03-03 19:13:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 262. [2022-03-03 19:13:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.0421455938697317) internal successors, (794), 261 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 794 transitions. [2022-03-03 19:13:36,537 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 794 transitions. Word has length 19 [2022-03-03 19:13:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:36,537 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 794 transitions. [2022-03-03 19:13:36,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 794 transitions. [2022-03-03 19:13:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:36,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:36,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:36,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:36,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:36,747 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash 879241596, now seen corresponding path program 6 times [2022-03-03 19:13:36,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:36,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611529800] [2022-03-03 19:13:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:36,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:36,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:36,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611529800] [2022-03-03 19:13:36,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611529800] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:36,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602572789] [2022-03-03 19:13:36,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:36,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:36,785 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:36,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-03 19:13:36,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:36,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:36,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:36,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:36,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:36,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602572789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:36,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:36,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:36,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033423501] [2022-03-03 19:13:36,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:36,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:36,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:36,903 INFO L87 Difference]: Start difference. First operand 262 states and 794 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:37,008 INFO L93 Difference]: Finished difference Result 354 states and 1042 transitions. [2022-03-03 19:13:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:37,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:37,009 INFO L225 Difference]: With dead ends: 354 [2022-03-03 19:13:37,009 INFO L226 Difference]: Without dead ends: 345 [2022-03-03 19:13:37,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:37,009 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:37,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 71 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-03-03 19:13:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 262. [2022-03-03 19:13:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.0268199233716473) internal successors, (790), 261 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 790 transitions. [2022-03-03 19:13:37,013 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 790 transitions. Word has length 19 [2022-03-03 19:13:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:37,013 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 790 transitions. [2022-03-03 19:13:37,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 790 transitions. [2022-03-03 19:13:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:37,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:37,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:37,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-03-03 19:13:37,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-03-03 19:13:37,231 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1074926498, now seen corresponding path program 6 times [2022-03-03 19:13:37,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:37,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285319765] [2022-03-03 19:13:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:37,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:37,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:37,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285319765] [2022-03-03 19:13:37,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285319765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:37,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105458436] [2022-03-03 19:13:37,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:37,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:37,275 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:37,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-03 19:13:37,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:37,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:37,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:37,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:37,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:37,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105458436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:37,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:37,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:37,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135970841] [2022-03-03 19:13:37,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:37,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:37,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:37,443 INFO L87 Difference]: Start difference. First operand 262 states and 790 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:37,561 INFO L93 Difference]: Finished difference Result 326 states and 967 transitions. [2022-03-03 19:13:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:37,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:37,562 INFO L225 Difference]: With dead ends: 326 [2022-03-03 19:13:37,562 INFO L226 Difference]: Without dead ends: 326 [2022-03-03 19:13:37,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:37,562 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:37,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 61 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-03 19:13:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 246. [2022-03-03 19:13:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.012244897959184) internal successors, (738), 245 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 738 transitions. [2022-03-03 19:13:37,565 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 738 transitions. Word has length 19 [2022-03-03 19:13:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 738 transitions. [2022-03-03 19:13:37,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 738 transitions. [2022-03-03 19:13:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:37,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:37,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:37,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-03-03 19:13:37,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-03-03 19:13:37,767 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1440270940, now seen corresponding path program 7 times [2022-03-03 19:13:37,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:37,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81481632] [2022-03-03 19:13:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:37,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:37,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81481632] [2022-03-03 19:13:37,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81481632] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:37,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361111237] [2022-03-03 19:13:37,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:37,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:37,816 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:37,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-03 19:13:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:37,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:37,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:37,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:37,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361111237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:37,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:37,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:37,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243006215] [2022-03-03 19:13:37,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:37,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:37,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:37,997 INFO L87 Difference]: Start difference. First operand 246 states and 738 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:38,106 INFO L93 Difference]: Finished difference Result 492 states and 1411 transitions. [2022-03-03 19:13:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:38,107 INFO L225 Difference]: With dead ends: 492 [2022-03-03 19:13:38,107 INFO L226 Difference]: Without dead ends: 468 [2022-03-03 19:13:38,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:38,107 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:38,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 75 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-03-03 19:13:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 255. [2022-03-03 19:13:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.0196850393700787) internal successors, (767), 254 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 767 transitions. [2022-03-03 19:13:38,111 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 767 transitions. Word has length 19 [2022-03-03 19:13:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:38,111 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 767 transitions. [2022-03-03 19:13:38,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 767 transitions. [2022-03-03 19:13:38,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:38,111 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:38,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:38,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-03-03 19:13:38,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2022-03-03 19:13:38,318 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:38,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 179299320, now seen corresponding path program 7 times [2022-03-03 19:13:38,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:38,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915159884] [2022-03-03 19:13:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:38,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:38,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:38,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915159884] [2022-03-03 19:13:38,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915159884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:38,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405001993] [2022-03-03 19:13:38,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:38,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:38,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:38,369 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:38,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-03 19:13:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:38,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:38,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:38,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:38,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405001993] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:38,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:38,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:38,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84563202] [2022-03-03 19:13:38,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:38,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:38,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:38,527 INFO L87 Difference]: Start difference. First operand 255 states and 767 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:38,637 INFO L93 Difference]: Finished difference Result 608 states and 1788 transitions. [2022-03-03 19:13:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:38,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:38,639 INFO L225 Difference]: With dead ends: 608 [2022-03-03 19:13:38,639 INFO L226 Difference]: Without dead ends: 608 [2022-03-03 19:13:38,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:38,639 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:38,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 64 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-03 19:13:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 264. [2022-03-03 19:13:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.053231939163498) internal successors, (803), 263 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 803 transitions. [2022-03-03 19:13:38,643 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 803 transitions. Word has length 19 [2022-03-03 19:13:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:38,643 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 803 transitions. [2022-03-03 19:13:38,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 803 transitions. [2022-03-03 19:13:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:38,643 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:38,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:38,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-03-03 19:13:38,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-03-03 19:13:38,855 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1723451364, now seen corresponding path program 8 times [2022-03-03 19:13:38,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:38,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592489281] [2022-03-03 19:13:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:38,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:38,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592489281] [2022-03-03 19:13:38,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592489281] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:38,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620306235] [2022-03-03 19:13:38,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:38,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:38,903 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:38,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-03 19:13:38,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:38,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:38,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:38,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:39,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:39,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620306235] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:39,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:39,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:39,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666768520] [2022-03-03 19:13:39,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:39,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:39,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:39,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:39,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:39,113 INFO L87 Difference]: Start difference. First operand 264 states and 803 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:39,236 INFO L93 Difference]: Finished difference Result 517 states and 1514 transitions. [2022-03-03 19:13:39,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:39,236 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:39,237 INFO L225 Difference]: With dead ends: 517 [2022-03-03 19:13:39,237 INFO L226 Difference]: Without dead ends: 517 [2022-03-03 19:13:39,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:39,237 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:39,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 83 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-03-03 19:13:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 268. [2022-03-03 19:13:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0823970037453186) internal successors, (823), 267 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 823 transitions. [2022-03-03 19:13:39,241 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 823 transitions. Word has length 19 [2022-03-03 19:13:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:39,241 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 823 transitions. [2022-03-03 19:13:39,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 823 transitions. [2022-03-03 19:13:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:39,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:39,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:39,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:39,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:39,442 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1089102948, now seen corresponding path program 8 times [2022-03-03 19:13:39,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:39,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989836797] [2022-03-03 19:13:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:39,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:39,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989836797] [2022-03-03 19:13:39,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989836797] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:39,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668785077] [2022-03-03 19:13:39,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:39,478 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:39,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-03 19:13:39,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:39,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:39,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:39,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:39,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:39,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668785077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:39,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:39,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:39,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679707675] [2022-03-03 19:13:39,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:39,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:39,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:39,645 INFO L87 Difference]: Start difference. First operand 268 states and 823 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:39,755 INFO L93 Difference]: Finished difference Result 554 states and 1618 transitions. [2022-03-03 19:13:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:39,756 INFO L225 Difference]: With dead ends: 554 [2022-03-03 19:13:39,756 INFO L226 Difference]: Without dead ends: 546 [2022-03-03 19:13:39,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:39,757 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:39,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 72 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-03-03 19:13:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 280. [2022-03-03 19:13:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.078853046594982) internal successors, (859), 279 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 859 transitions. [2022-03-03 19:13:39,761 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 859 transitions. Word has length 19 [2022-03-03 19:13:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:39,761 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 859 transitions. [2022-03-03 19:13:39,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 859 transitions. [2022-03-03 19:13:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:39,761 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:39,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:39,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:39,962 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1129400010, now seen corresponding path program 9 times [2022-03-03 19:13:39,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:39,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517580227] [2022-03-03 19:13:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:40,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:40,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517580227] [2022-03-03 19:13:40,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517580227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:40,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437820070] [2022-03-03 19:13:40,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:40,003 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:40,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-03 19:13:40,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:40,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:40,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:40,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:40,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:40,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437820070] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:40,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:40,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:40,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513657169] [2022-03-03 19:13:40,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:40,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:40,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:40,177 INFO L87 Difference]: Start difference. First operand 280 states and 859 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:40,301 INFO L93 Difference]: Finished difference Result 518 states and 1507 transitions. [2022-03-03 19:13:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:40,302 INFO L225 Difference]: With dead ends: 518 [2022-03-03 19:13:40,302 INFO L226 Difference]: Without dead ends: 509 [2022-03-03 19:13:40,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:40,303 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:40,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 102 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-03-03 19:13:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 280. [2022-03-03 19:13:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.064516129032258) internal successors, (855), 279 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 855 transitions. [2022-03-03 19:13:40,307 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 855 transitions. Word has length 19 [2022-03-03 19:13:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:40,307 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 855 transitions. [2022-03-03 19:13:40,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 855 transitions. [2022-03-03 19:13:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:40,307 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:40,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:40,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:40,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-03-03 19:13:40,523 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1211399192, now seen corresponding path program 9 times [2022-03-03 19:13:40,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:40,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025429149] [2022-03-03 19:13:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:40,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:40,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:40,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025429149] [2022-03-03 19:13:40,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025429149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:40,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427540318] [2022-03-03 19:13:40,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:40,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:40,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:40,564 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:40,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-03 19:13:40,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:40,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:40,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:40,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:40,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:40,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427540318] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:40,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:40,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:40,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129319004] [2022-03-03 19:13:40,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:40,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:40,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:40,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:40,727 INFO L87 Difference]: Start difference. First operand 280 states and 855 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:40,835 INFO L93 Difference]: Finished difference Result 572 states and 1674 transitions. [2022-03-03 19:13:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:40,836 INFO L225 Difference]: With dead ends: 572 [2022-03-03 19:13:40,836 INFO L226 Difference]: Without dead ends: 572 [2022-03-03 19:13:40,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:40,836 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:40,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 71 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:40,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-03 19:13:40,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 269. [2022-03-03 19:13:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.0671641791044775) internal successors, (822), 268 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 822 transitions. [2022-03-03 19:13:40,840 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 822 transitions. Word has length 19 [2022-03-03 19:13:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:40,840 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 822 transitions. [2022-03-03 19:13:40,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 822 transitions. [2022-03-03 19:13:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:40,841 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:40,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:40,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:41,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:41,041 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 776345336, now seen corresponding path program 10 times [2022-03-03 19:13:41,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:41,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261492135] [2022-03-03 19:13:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:41,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:41,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261492135] [2022-03-03 19:13:41,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261492135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:41,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:41,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:41,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506930812] [2022-03-03 19:13:41,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:41,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:41,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:41,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:41,072 INFO L87 Difference]: Start difference. First operand 269 states and 822 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:41,183 INFO L93 Difference]: Finished difference Result 413 states and 1194 transitions. [2022-03-03 19:13:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:41,184 INFO L225 Difference]: With dead ends: 413 [2022-03-03 19:13:41,184 INFO L226 Difference]: Without dead ends: 389 [2022-03-03 19:13:41,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:41,184 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:41,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 51 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-03 19:13:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 273. [2022-03-03 19:13:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 3.0441176470588234) internal successors, (828), 272 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 828 transitions. [2022-03-03 19:13:41,199 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 828 transitions. Word has length 19 [2022-03-03 19:13:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:41,199 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 828 transitions. [2022-03-03 19:13:41,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 828 transitions. [2022-03-03 19:13:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:41,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:41,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:41,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-03 19:13:41,200 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:41,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:41,200 INFO L85 PathProgramCache]: Analyzing trace with hash -853608804, now seen corresponding path program 11 times [2022-03-03 19:13:41,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:41,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237840439] [2022-03-03 19:13:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:41,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237840439] [2022-03-03 19:13:41,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237840439] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:41,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:41,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:41,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262620750] [2022-03-03 19:13:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:41,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:41,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:41,232 INFO L87 Difference]: Start difference. First operand 273 states and 828 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:41,357 INFO L93 Difference]: Finished difference Result 397 states and 1148 transitions. [2022-03-03 19:13:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:41,358 INFO L225 Difference]: With dead ends: 397 [2022-03-03 19:13:41,358 INFO L226 Difference]: Without dead ends: 391 [2022-03-03 19:13:41,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:41,358 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:41,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 47 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-03-03 19:13:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 283. [2022-03-03 19:13:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 3.024822695035461) internal successors, (853), 282 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 853 transitions. [2022-03-03 19:13:41,362 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 853 transitions. Word has length 19 [2022-03-03 19:13:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:41,362 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 853 transitions. [2022-03-03 19:13:41,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 853 transitions. [2022-03-03 19:13:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:41,363 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:41,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:41,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-03 19:13:41,363 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash 73236910, now seen corresponding path program 12 times [2022-03-03 19:13:41,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:41,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173915579] [2022-03-03 19:13:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:41,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173915579] [2022-03-03 19:13:41,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173915579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:41,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:41,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:41,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329417544] [2022-03-03 19:13:41,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:41,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:41,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:41,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:41,394 INFO L87 Difference]: Start difference. First operand 283 states and 853 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:41,500 INFO L93 Difference]: Finished difference Result 361 states and 1065 transitions. [2022-03-03 19:13:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:41,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:41,501 INFO L225 Difference]: With dead ends: 361 [2022-03-03 19:13:41,501 INFO L226 Difference]: Without dead ends: 346 [2022-03-03 19:13:41,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:41,501 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:41,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-03 19:13:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2022-03-03 19:13:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.0597014925373136) internal successors, (820), 268 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 820 transitions. [2022-03-03 19:13:41,505 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 820 transitions. Word has length 19 [2022-03-03 19:13:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:41,505 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 820 transitions. [2022-03-03 19:13:41,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 820 transitions. [2022-03-03 19:13:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:41,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:41,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:41,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-03-03 19:13:41,506 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash -793671404, now seen corresponding path program 10 times [2022-03-03 19:13:41,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:41,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379786383] [2022-03-03 19:13:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:41,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379786383] [2022-03-03 19:13:41,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379786383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:41,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918715191] [2022-03-03 19:13:41,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:41,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:41,538 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:41,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-03 19:13:41,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:41,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:41,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:41,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918715191] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:41,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:41,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:41,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525520242] [2022-03-03 19:13:41,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:41,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:41,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:41,673 INFO L87 Difference]: Start difference. First operand 269 states and 820 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:41,783 INFO L93 Difference]: Finished difference Result 531 states and 1547 transitions. [2022-03-03 19:13:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:41,784 INFO L225 Difference]: With dead ends: 531 [2022-03-03 19:13:41,784 INFO L226 Difference]: Without dead ends: 531 [2022-03-03 19:13:41,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:41,784 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:41,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 63 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-03-03 19:13:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 254. [2022-03-03 19:13:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.0118577075098814) internal successors, (762), 253 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 762 transitions. [2022-03-03 19:13:41,789 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 762 transitions. Word has length 19 [2022-03-03 19:13:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:41,789 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 762 transitions. [2022-03-03 19:13:41,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 762 transitions. [2022-03-03 19:13:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:41,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:41,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:41,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-03-03 19:13:41,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:41,991 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:41,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1425001406, now seen corresponding path program 11 times [2022-03-03 19:13:41,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:41,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678314506] [2022-03-03 19:13:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:41,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:42,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678314506] [2022-03-03 19:13:42,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678314506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:42,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567879973] [2022-03-03 19:13:42,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:42,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:42,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:42,035 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:42,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-03 19:13:42,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:42,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:42,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:42,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567879973] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:42,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:42,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:42,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768114894] [2022-03-03 19:13:42,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:42,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:42,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:42,179 INFO L87 Difference]: Start difference. First operand 254 states and 762 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:42,278 INFO L93 Difference]: Finished difference Result 470 states and 1356 transitions. [2022-03-03 19:13:42,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:42,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:42,279 INFO L225 Difference]: With dead ends: 470 [2022-03-03 19:13:42,279 INFO L226 Difference]: Without dead ends: 464 [2022-03-03 19:13:42,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:42,280 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:42,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 77 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-03-03 19:13:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 266. [2022-03-03 19:13:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.0226415094339623) internal successors, (801), 265 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 801 transitions. [2022-03-03 19:13:42,283 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 801 transitions. Word has length 19 [2022-03-03 19:13:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:42,283 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 801 transitions. [2022-03-03 19:13:42,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 801 transitions. [2022-03-03 19:13:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:42,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:42,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:42,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-03-03 19:13:42,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2022-03-03 19:13:42,489 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 832808322, now seen corresponding path program 12 times [2022-03-03 19:13:42,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:42,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890193619] [2022-03-03 19:13:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:42,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890193619] [2022-03-03 19:13:42,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890193619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:42,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040216455] [2022-03-03 19:13:42,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:42,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:42,530 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:42,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-03 19:13:42,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:42,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:42,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040216455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:42,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:42,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:42,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959113609] [2022-03-03 19:13:42,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:42,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:42,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:42,699 INFO L87 Difference]: Start difference. First operand 266 states and 801 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:42,837 INFO L93 Difference]: Finished difference Result 448 states and 1309 transitions. [2022-03-03 19:13:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:42,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:42,838 INFO L225 Difference]: With dead ends: 448 [2022-03-03 19:13:42,838 INFO L226 Difference]: Without dead ends: 448 [2022-03-03 19:13:42,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:42,839 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:42,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 95 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-03 19:13:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 251. [2022-03-03 19:13:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 3.024) internal successors, (756), 250 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 756 transitions. [2022-03-03 19:13:42,842 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 756 transitions. Word has length 19 [2022-03-03 19:13:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:42,842 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 756 transitions. [2022-03-03 19:13:42,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 756 transitions. [2022-03-03 19:13:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:42,843 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:42,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:42,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-03-03 19:13:43,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2022-03-03 19:13:43,051 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1130757860, now seen corresponding path program 13 times [2022-03-03 19:13:43,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:43,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168797329] [2022-03-03 19:13:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:43,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168797329] [2022-03-03 19:13:43,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168797329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:43,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314048900] [2022-03-03 19:13:43,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:43,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:43,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:43,109 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:43,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-03 19:13:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314048900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:43,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:43,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:43,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335228411] [2022-03-03 19:13:43,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:43,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:43,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:43,333 INFO L87 Difference]: Start difference. First operand 251 states and 756 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:43,459 INFO L93 Difference]: Finished difference Result 475 states and 1387 transitions. [2022-03-03 19:13:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:43,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:43,460 INFO L225 Difference]: With dead ends: 475 [2022-03-03 19:13:43,460 INFO L226 Difference]: Without dead ends: 475 [2022-03-03 19:13:43,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:43,461 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:43,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 78 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-03-03 19:13:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 259. [2022-03-03 19:13:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.0775193798449614) internal successors, (794), 258 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 794 transitions. [2022-03-03 19:13:43,465 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 794 transitions. Word has length 19 [2022-03-03 19:13:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:43,465 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 794 transitions. [2022-03-03 19:13:43,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 794 transitions. [2022-03-03 19:13:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:43,465 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:43,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:43,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-03-03 19:13:43,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-03-03 19:13:43,666 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1291977800, now seen corresponding path program 14 times [2022-03-03 19:13:43,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:43,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640858515] [2022-03-03 19:13:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:43,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640858515] [2022-03-03 19:13:43,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640858515] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:43,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777689348] [2022-03-03 19:13:43,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:43,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:43,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:43,695 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:43,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-03 19:13:43,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:43,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:43,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:43,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777689348] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:43,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:43,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:43,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090221141] [2022-03-03 19:13:43,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:43,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:43,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:43,819 INFO L87 Difference]: Start difference. First operand 259 states and 794 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:43,899 INFO L93 Difference]: Finished difference Result 457 states and 1318 transitions. [2022-03-03 19:13:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:43,900 INFO L225 Difference]: With dead ends: 457 [2022-03-03 19:13:43,900 INFO L226 Difference]: Without dead ends: 451 [2022-03-03 19:13:43,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:43,900 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:43,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 93 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-03-03 19:13:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 263. [2022-03-03 19:13:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.0572519083969465) internal successors, (801), 262 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 801 transitions. [2022-03-03 19:13:43,904 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 801 transitions. Word has length 19 [2022-03-03 19:13:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:43,904 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 801 transitions. [2022-03-03 19:13:43,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 801 transitions. [2022-03-03 19:13:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:43,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:43,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:43,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:44,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:44,121 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1494100936, now seen corresponding path program 13 times [2022-03-03 19:13:44,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:44,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247404074] [2022-03-03 19:13:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:44,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247404074] [2022-03-03 19:13:44,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247404074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:44,145 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:44,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:44,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885075314] [2022-03-03 19:13:44,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:44,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:44,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:44,145 INFO L87 Difference]: Start difference. First operand 263 states and 801 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:44,211 INFO L93 Difference]: Finished difference Result 479 states and 1377 transitions. [2022-03-03 19:13:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:44,212 INFO L225 Difference]: With dead ends: 479 [2022-03-03 19:13:44,212 INFO L226 Difference]: Without dead ends: 471 [2022-03-03 19:13:44,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:44,212 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 77 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:44,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 50 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:13:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-03-03 19:13:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 281. [2022-03-03 19:13:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.057142857142857) internal successors, (856), 280 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 856 transitions. [2022-03-03 19:13:44,216 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 856 transitions. Word has length 19 [2022-03-03 19:13:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:44,216 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 856 transitions. [2022-03-03 19:13:44,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 856 transitions. [2022-03-03 19:13:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:44,217 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:44,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:44,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-03 19:13:44,217 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash -586439524, now seen corresponding path program 14 times [2022-03-03 19:13:44,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:44,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770487778] [2022-03-03 19:13:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:44,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:44,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770487778] [2022-03-03 19:13:44,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770487778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:44,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:44,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:44,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649599811] [2022-03-03 19:13:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:44,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:44,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:44,241 INFO L87 Difference]: Start difference. First operand 281 states and 856 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:44,310 INFO L93 Difference]: Finished difference Result 485 states and 1392 transitions. [2022-03-03 19:13:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:44,311 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:13:44,311 INFO L226 Difference]: Without dead ends: 477 [2022-03-03 19:13:44,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:44,311 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:44,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 63 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-03-03 19:13:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 281. [2022-03-03 19:13:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.0607142857142855) internal successors, (857), 280 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 857 transitions. [2022-03-03 19:13:44,315 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 857 transitions. Word has length 19 [2022-03-03 19:13:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:44,315 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 857 transitions. [2022-03-03 19:13:44,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 857 transitions. [2022-03-03 19:13:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:44,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:44,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:44,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-03 19:13:44,316 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 509743022, now seen corresponding path program 15 times [2022-03-03 19:13:44,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:44,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362863416] [2022-03-03 19:13:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:44,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362863416] [2022-03-03 19:13:44,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362863416] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:44,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72582814] [2022-03-03 19:13:44,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:44,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:44,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:44,347 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:44,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-03 19:13:44,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:13:44,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:44,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72582814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:44,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:44,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:44,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844322223] [2022-03-03 19:13:44,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:44,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:44,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:44,507 INFO L87 Difference]: Start difference. First operand 281 states and 857 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:44,591 INFO L93 Difference]: Finished difference Result 491 states and 1423 transitions. [2022-03-03 19:13:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:44,592 INFO L225 Difference]: With dead ends: 491 [2022-03-03 19:13:44,592 INFO L226 Difference]: Without dead ends: 491 [2022-03-03 19:13:44,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:44,611 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:44,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 86 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-03-03 19:13:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 279. [2022-03-03 19:13:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 3.053956834532374) internal successors, (849), 278 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 849 transitions. [2022-03-03 19:13:44,616 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 849 transitions. Word has length 19 [2022-03-03 19:13:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:44,616 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 849 transitions. [2022-03-03 19:13:44,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 849 transitions. [2022-03-03 19:13:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:44,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:44,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:44,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:44,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:44,834 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash 207385588, now seen corresponding path program 15 times [2022-03-03 19:13:44,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:44,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613500062] [2022-03-03 19:13:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:44,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613500062] [2022-03-03 19:13:44,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613500062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:44,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133710211] [2022-03-03 19:13:44,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:44,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:44,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:44,860 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:44,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-03 19:13:44,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:44,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:44,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:44,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133710211] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:45,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:45,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:45,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883144580] [2022-03-03 19:13:45,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:45,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:45,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:45,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:45,020 INFO L87 Difference]: Start difference. First operand 279 states and 849 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:45,145 INFO L93 Difference]: Finished difference Result 485 states and 1379 transitions. [2022-03-03 19:13:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:45,146 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:13:45,147 INFO L226 Difference]: Without dead ends: 477 [2022-03-03 19:13:45,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:45,147 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:45,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 82 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-03-03 19:13:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 272. [2022-03-03 19:13:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.062730627306273) internal successors, (830), 271 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 830 transitions. [2022-03-03 19:13:45,150 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 830 transitions. Word has length 19 [2022-03-03 19:13:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:45,151 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 830 transitions. [2022-03-03 19:13:45,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 830 transitions. [2022-03-03 19:13:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:45,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:45,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:45,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-03-03 19:13:45,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:45,362 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1574506322, now seen corresponding path program 16 times [2022-03-03 19:13:45,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:45,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283748002] [2022-03-03 19:13:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:45,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283748002] [2022-03-03 19:13:45,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283748002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:45,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502474391] [2022-03-03 19:13:45,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:45,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:45,390 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:45,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-03 19:13:45,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:45,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:45,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:45,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502474391] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:45,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:45,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:45,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57781063] [2022-03-03 19:13:45,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:45,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:45,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:45,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:45,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:45,528 INFO L87 Difference]: Start difference. First operand 272 states and 830 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:45,603 INFO L93 Difference]: Finished difference Result 439 states and 1276 transitions. [2022-03-03 19:13:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:45,604 INFO L225 Difference]: With dead ends: 439 [2022-03-03 19:13:45,604 INFO L226 Difference]: Without dead ends: 430 [2022-03-03 19:13:45,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:45,604 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 94 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:45,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 84 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-03-03 19:13:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 272. [2022-03-03 19:13:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.047970479704797) internal successors, (826), 271 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 826 transitions. [2022-03-03 19:13:45,608 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 826 transitions. Word has length 19 [2022-03-03 19:13:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:45,608 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 826 transitions. [2022-03-03 19:13:45,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 826 transitions. [2022-03-03 19:13:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:45,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:45,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:45,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-03-03 19:13:45,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:45,825 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -379661772, now seen corresponding path program 16 times [2022-03-03 19:13:45,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:45,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700674276] [2022-03-03 19:13:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:45,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:45,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700674276] [2022-03-03 19:13:45,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700674276] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:45,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122724949] [2022-03-03 19:13:45,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:45,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:45,868 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:45,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-03 19:13:45,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:45,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:45,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:45,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:46,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122724949] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:46,029 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:46,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:46,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035175102] [2022-03-03 19:13:46,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:46,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:46,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:46,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:46,030 INFO L87 Difference]: Start difference. First operand 272 states and 826 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:46,130 INFO L93 Difference]: Finished difference Result 466 states and 1359 transitions. [2022-03-03 19:13:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:46,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:46,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:46,131 INFO L225 Difference]: With dead ends: 466 [2022-03-03 19:13:46,131 INFO L226 Difference]: Without dead ends: 466 [2022-03-03 19:13:46,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:46,132 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:46,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 86 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-03-03 19:13:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 268. [2022-03-03 19:13:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.048689138576779) internal successors, (814), 267 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 814 transitions. [2022-03-03 19:13:46,135 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 814 transitions. Word has length 19 [2022-03-03 19:13:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:46,136 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 814 transitions. [2022-03-03 19:13:46,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,136 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 814 transitions. [2022-03-03 19:13:46,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:46,136 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:46,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:46,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:46,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable242 [2022-03-03 19:13:46,350 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -39034926, now seen corresponding path program 17 times [2022-03-03 19:13:46,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:46,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964204673] [2022-03-03 19:13:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:46,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:46,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964204673] [2022-03-03 19:13:46,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964204673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:46,404 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:46,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:46,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159248379] [2022-03-03 19:13:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:46,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:46,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:46,404 INFO L87 Difference]: Start difference. First operand 268 states and 814 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:46,523 INFO L93 Difference]: Finished difference Result 410 states and 1187 transitions. [2022-03-03 19:13:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:46,524 INFO L225 Difference]: With dead ends: 410 [2022-03-03 19:13:46,524 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:13:46,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:46,524 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:46,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 53 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:13:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 278. [2022-03-03 19:13:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.0288808664259927) internal successors, (839), 277 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 839 transitions. [2022-03-03 19:13:46,527 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 839 transitions. Word has length 19 [2022-03-03 19:13:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:46,528 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 839 transitions. [2022-03-03 19:13:46,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 839 transitions. [2022-03-03 19:13:46,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:46,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:46,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:46,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-03 19:13:46,528 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1371588864, now seen corresponding path program 18 times [2022-03-03 19:13:46,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:46,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393967863] [2022-03-03 19:13:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:46,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:46,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393967863] [2022-03-03 19:13:46,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393967863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:46,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:46,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:46,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175840660] [2022-03-03 19:13:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:46,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:46,566 INFO L87 Difference]: Start difference. First operand 278 states and 839 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:46,678 INFO L93 Difference]: Finished difference Result 374 states and 1104 transitions. [2022-03-03 19:13:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:46,678 INFO L225 Difference]: With dead ends: 374 [2022-03-03 19:13:46,679 INFO L226 Difference]: Without dead ends: 363 [2022-03-03 19:13:46,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:46,679 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 50 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:46,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 52 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-03-03 19:13:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 268. [2022-03-03 19:13:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.044943820224719) internal successors, (813), 267 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 813 transitions. [2022-03-03 19:13:46,682 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 813 transitions. Word has length 19 [2022-03-03 19:13:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:46,682 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 813 transitions. [2022-03-03 19:13:46,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 813 transitions. [2022-03-03 19:13:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:46,683 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:46,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:46,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-03-03 19:13:46,683 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash 42854168, now seen corresponding path program 17 times [2022-03-03 19:13:46,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:46,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901183842] [2022-03-03 19:13:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:46,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:46,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901183842] [2022-03-03 19:13:46,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901183842] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:46,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:46,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:46,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793634167] [2022-03-03 19:13:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:46,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:46,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:46,724 INFO L87 Difference]: Start difference. First operand 268 states and 813 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:46,843 INFO L93 Difference]: Finished difference Result 435 states and 1255 transitions. [2022-03-03 19:13:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:46,843 INFO L225 Difference]: With dead ends: 435 [2022-03-03 19:13:46,843 INFO L226 Difference]: Without dead ends: 429 [2022-03-03 19:13:46,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:46,844 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:46,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 62 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-03 19:13:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 274. [2022-03-03 19:13:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.029304029304029) internal successors, (827), 273 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 827 transitions. [2022-03-03 19:13:46,847 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 827 transitions. Word has length 19 [2022-03-03 19:13:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:46,847 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 827 transitions. [2022-03-03 19:13:46,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 827 transitions. [2022-03-03 19:13:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:46,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:46,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:46,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-03-03 19:13:46,848 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2119016484, now seen corresponding path program 18 times [2022-03-03 19:13:46,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:46,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534004099] [2022-03-03 19:13:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:46,880 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:46,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534004099] [2022-03-03 19:13:46,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534004099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:46,881 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:46,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:46,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458186253] [2022-03-03 19:13:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:46,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:46,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:46,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:46,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:46,881 INFO L87 Difference]: Start difference. First operand 274 states and 827 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:47,031 INFO L93 Difference]: Finished difference Result 413 states and 1218 transitions. [2022-03-03 19:13:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:47,032 INFO L225 Difference]: With dead ends: 413 [2022-03-03 19:13:47,032 INFO L226 Difference]: Without dead ends: 413 [2022-03-03 19:13:47,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:47,032 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:47,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 61 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-03 19:13:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 253. [2022-03-03 19:13:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 3.0277777777777777) internal successors, (763), 252 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 763 transitions. [2022-03-03 19:13:47,035 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 763 transitions. Word has length 19 [2022-03-03 19:13:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:47,035 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 763 transitions. [2022-03-03 19:13:47,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 763 transitions. [2022-03-03 19:13:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:47,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:47,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:47,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-03 19:13:47,036 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1924937480, now seen corresponding path program 19 times [2022-03-03 19:13:47,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:47,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041614666] [2022-03-03 19:13:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:47,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041614666] [2022-03-03 19:13:47,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041614666] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:47,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196285376] [2022-03-03 19:13:47,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:47,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:47,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:47,078 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:47,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-03 19:13:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:47,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196285376] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:47,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:47,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:47,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757811679] [2022-03-03 19:13:47,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:47,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:47,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:47,200 INFO L87 Difference]: Start difference. First operand 253 states and 763 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:47,301 INFO L93 Difference]: Finished difference Result 531 states and 1560 transitions. [2022-03-03 19:13:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:47,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:47,302 INFO L225 Difference]: With dead ends: 531 [2022-03-03 19:13:47,302 INFO L226 Difference]: Without dead ends: 531 [2022-03-03 19:13:47,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:47,302 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 61 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:47,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 79 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-03-03 19:13:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 261. [2022-03-03 19:13:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.05) internal successors, (793), 260 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 793 transitions. [2022-03-03 19:13:47,306 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 793 transitions. Word has length 19 [2022-03-03 19:13:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:47,306 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 793 transitions. [2022-03-03 19:13:47,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 793 transitions. [2022-03-03 19:13:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:47,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:47,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:47,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-03-03 19:13:47,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:47,522 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1553845540, now seen corresponding path program 20 times [2022-03-03 19:13:47,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:47,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679213863] [2022-03-03 19:13:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:47,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:47,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679213863] [2022-03-03 19:13:47,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679213863] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:47,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621981650] [2022-03-03 19:13:47,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:47,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:47,563 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:47,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-03 19:13:47,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:47,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:47,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:47,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621981650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:47,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:47,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:47,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202455472] [2022-03-03 19:13:47,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:47,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:47,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:47,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:47,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:47,735 INFO L87 Difference]: Start difference. First operand 261 states and 793 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:47,840 INFO L93 Difference]: Finished difference Result 546 states and 1584 transitions. [2022-03-03 19:13:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:47,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:47,841 INFO L225 Difference]: With dead ends: 546 [2022-03-03 19:13:47,841 INFO L226 Difference]: Without dead ends: 546 [2022-03-03 19:13:47,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:47,841 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 101 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:47,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 63 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-03-03 19:13:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 267. [2022-03-03 19:13:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 3.082706766917293) internal successors, (820), 266 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 820 transitions. [2022-03-03 19:13:47,845 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 820 transitions. Word has length 19 [2022-03-03 19:13:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:47,845 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 820 transitions. [2022-03-03 19:13:47,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 820 transitions. [2022-03-03 19:13:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:47,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:47,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:47,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:48,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:48,046 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1715065480, now seen corresponding path program 21 times [2022-03-03 19:13:48,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:48,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417866007] [2022-03-03 19:13:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:48,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417866007] [2022-03-03 19:13:48,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417866007] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:48,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45044167] [2022-03-03 19:13:48,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:48,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:48,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:48,080 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:48,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-03 19:13:48,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:48,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:48,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:48,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45044167] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:48,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:48,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:48,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64368386] [2022-03-03 19:13:48,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:48,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:48,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:48,232 INFO L87 Difference]: Start difference. First operand 267 states and 820 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:48,323 INFO L93 Difference]: Finished difference Result 492 states and 1431 transitions. [2022-03-03 19:13:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:48,324 INFO L225 Difference]: With dead ends: 492 [2022-03-03 19:13:48,324 INFO L226 Difference]: Without dead ends: 486 [2022-03-03 19:13:48,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:48,324 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 92 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:48,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 64 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-03-03 19:13:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 268. [2022-03-03 19:13:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0636704119850187) internal successors, (818), 267 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 818 transitions. [2022-03-03 19:13:48,328 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 818 transitions. Word has length 19 [2022-03-03 19:13:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:48,328 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 818 transitions. [2022-03-03 19:13:48,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 818 transitions. [2022-03-03 19:13:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:48,329 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:48,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:48,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:48,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2022-03-03 19:13:48,531 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1425376386, now seen corresponding path program 19 times [2022-03-03 19:13:48,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:48,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079298538] [2022-03-03 19:13:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:48,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079298538] [2022-03-03 19:13:48,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079298538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:48,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:48,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:48,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669275634] [2022-03-03 19:13:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:48,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:48,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:48,564 INFO L87 Difference]: Start difference. First operand 268 states and 818 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:48,669 INFO L93 Difference]: Finished difference Result 411 states and 1193 transitions. [2022-03-03 19:13:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:48,670 INFO L225 Difference]: With dead ends: 411 [2022-03-03 19:13:48,670 INFO L226 Difference]: Without dead ends: 395 [2022-03-03 19:13:48,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:48,670 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:48,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 51 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-03 19:13:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 272. [2022-03-03 19:13:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.047970479704797) internal successors, (826), 271 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 826 transitions. [2022-03-03 19:13:48,675 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 826 transitions. Word has length 19 [2022-03-03 19:13:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:48,675 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 826 transitions. [2022-03-03 19:13:48,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 826 transitions. [2022-03-03 19:13:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:48,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:48,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:48,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-03 19:13:48,676 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash 44324638, now seen corresponding path program 20 times [2022-03-03 19:13:48,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:48,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982676047] [2022-03-03 19:13:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:48,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982676047] [2022-03-03 19:13:48,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982676047] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:48,711 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:48,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:48,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362224187] [2022-03-03 19:13:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:48,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:48,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:48,712 INFO L87 Difference]: Start difference. First operand 272 states and 826 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:48,831 INFO L93 Difference]: Finished difference Result 440 states and 1247 transitions. [2022-03-03 19:13:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:48,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:48,832 INFO L225 Difference]: With dead ends: 440 [2022-03-03 19:13:48,833 INFO L226 Difference]: Without dead ends: 432 [2022-03-03 19:13:48,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:48,833 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 84 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:48,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 51 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-03-03 19:13:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 288. [2022-03-03 19:13:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.0313588850174216) internal successors, (870), 287 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 870 transitions. [2022-03-03 19:13:48,837 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 870 transitions. Word has length 19 [2022-03-03 19:13:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:48,837 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 870 transitions. [2022-03-03 19:13:48,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 870 transitions. [2022-03-03 19:13:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:48,837 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:48,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:48,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-03 19:13:48,838 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash 951986050, now seen corresponding path program 21 times [2022-03-03 19:13:48,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:48,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135813798] [2022-03-03 19:13:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:48,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135813798] [2022-03-03 19:13:48,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135813798] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:48,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:48,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:48,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595847287] [2022-03-03 19:13:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:48,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:48,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:48,889 INFO L87 Difference]: Start difference. First operand 288 states and 870 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:49,005 INFO L93 Difference]: Finished difference Result 403 states and 1161 transitions. [2022-03-03 19:13:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:49,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:49,006 INFO L225 Difference]: With dead ends: 403 [2022-03-03 19:13:49,006 INFO L226 Difference]: Without dead ends: 393 [2022-03-03 19:13:49,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:49,007 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:49,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 63 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-03-03 19:13:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 274. [2022-03-03 19:13:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.0549450549450547) internal successors, (834), 273 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 834 transitions. [2022-03-03 19:13:49,010 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 834 transitions. Word has length 19 [2022-03-03 19:13:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:49,010 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 834 transitions. [2022-03-03 19:13:49,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 834 transitions. [2022-03-03 19:13:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:49,011 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:49,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:49,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-03 19:13:49,011 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1685949606, now seen corresponding path program 22 times [2022-03-03 19:13:49,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:49,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110156722] [2022-03-03 19:13:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:49,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:49,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110156722] [2022-03-03 19:13:49,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110156722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:49,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033392726] [2022-03-03 19:13:49,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:49,046 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:49,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-03 19:13:49,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:49,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:49,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:49,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033392726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:49,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:49,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:49,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465870690] [2022-03-03 19:13:49,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:49,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:49,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:49,204 INFO L87 Difference]: Start difference. First operand 274 states and 834 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:49,318 INFO L93 Difference]: Finished difference Result 549 states and 1625 transitions. [2022-03-03 19:13:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:49,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:49,319 INFO L225 Difference]: With dead ends: 549 [2022-03-03 19:13:49,319 INFO L226 Difference]: Without dead ends: 549 [2022-03-03 19:13:49,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:49,319 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 64 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:49,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 86 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-03 19:13:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 269. [2022-03-03 19:13:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.0261194029850746) internal successors, (811), 268 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 811 transitions. [2022-03-03 19:13:49,323 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 811 transitions. Word has length 19 [2022-03-03 19:13:49,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:49,323 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 811 transitions. [2022-03-03 19:13:49,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,323 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 811 transitions. [2022-03-03 19:13:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:49,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:49,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:49,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-03-03 19:13:49,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable253 [2022-03-03 19:13:49,524 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1663116218, now seen corresponding path program 22 times [2022-03-03 19:13:49,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:49,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323911563] [2022-03-03 19:13:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:49,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:49,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323911563] [2022-03-03 19:13:49,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323911563] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:49,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122995448] [2022-03-03 19:13:49,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:49,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:49,560 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:49,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-03 19:13:49,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:49,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:49,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:49,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122995448] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:49,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:49,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:49,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803302943] [2022-03-03 19:13:49,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:49,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:49,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:49,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:49,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:49,656 INFO L87 Difference]: Start difference. First operand 269 states and 811 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:49,733 INFO L93 Difference]: Finished difference Result 464 states and 1340 transitions. [2022-03-03 19:13:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:49,734 INFO L225 Difference]: With dead ends: 464 [2022-03-03 19:13:49,734 INFO L226 Difference]: Without dead ends: 448 [2022-03-03 19:13:49,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:49,735 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:49,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 93 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-03 19:13:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 259. [2022-03-03 19:13:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.0310077519379846) internal successors, (782), 258 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 782 transitions. [2022-03-03 19:13:49,738 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 782 transitions. Word has length 19 [2022-03-03 19:13:49,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:49,738 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 782 transitions. [2022-03-03 19:13:49,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 782 transitions. [2022-03-03 19:13:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:49,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:49,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:49,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-03-03 19:13:49,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-03-03 19:13:49,955 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1793059386, now seen corresponding path program 23 times [2022-03-03 19:13:49,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:49,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21013815] [2022-03-03 19:13:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:49,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21013815] [2022-03-03 19:13:49,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21013815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:49,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678183729] [2022-03-03 19:13:49,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:49,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:49,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:49,988 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:49,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-03 19:13:50,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:50,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:50,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:50,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:50,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:50,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678183729] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:50,136 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:50,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:50,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388072812] [2022-03-03 19:13:50,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:50,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:50,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:50,145 INFO L87 Difference]: Start difference. First operand 259 states and 782 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:50,278 INFO L93 Difference]: Finished difference Result 520 states and 1530 transitions. [2022-03-03 19:13:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:50,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:50,280 INFO L225 Difference]: With dead ends: 520 [2022-03-03 19:13:50,280 INFO L226 Difference]: Without dead ends: 520 [2022-03-03 19:13:50,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:50,280 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:50,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 95 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-03-03 19:13:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 263. [2022-03-03 19:13:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.0610687022900764) internal successors, (802), 262 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 802 transitions. [2022-03-03 19:13:50,284 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 802 transitions. Word has length 19 [2022-03-03 19:13:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:50,284 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 802 transitions. [2022-03-03 19:13:50,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 802 transitions. [2022-03-03 19:13:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:50,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:50,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:50,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-03-03 19:13:50,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-03-03 19:13:50,485 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:50,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1158710970, now seen corresponding path program 23 times [2022-03-03 19:13:50,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:50,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514527800] [2022-03-03 19:13:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:50,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:50,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514527800] [2022-03-03 19:13:50,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514527800] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:50,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115877827] [2022-03-03 19:13:50,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:50,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:50,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:50,527 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:50,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-03 19:13:50,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:50,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:50,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:50,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:50,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115877827] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:50,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:50,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:50,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919160481] [2022-03-03 19:13:50,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:50,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:50,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:50,713 INFO L87 Difference]: Start difference. First operand 263 states and 802 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:50,820 INFO L93 Difference]: Finished difference Result 482 states and 1413 transitions. [2022-03-03 19:13:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:50,821 INFO L225 Difference]: With dead ends: 482 [2022-03-03 19:13:50,821 INFO L226 Difference]: Without dead ends: 474 [2022-03-03 19:13:50,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:50,821 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:50,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 70 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-03 19:13:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 275. [2022-03-03 19:13:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.0583941605839415) internal successors, (838), 274 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 838 transitions. [2022-03-03 19:13:50,825 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 838 transitions. Word has length 19 [2022-03-03 19:13:50,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:50,825 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 838 transitions. [2022-03-03 19:13:50,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 838 transitions. [2022-03-03 19:13:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:50,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:50,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:50,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-03-03 19:13:51,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2022-03-03 19:13:51,026 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1199008032, now seen corresponding path program 24 times [2022-03-03 19:13:51,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:51,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750126263] [2022-03-03 19:13:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:51,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750126263] [2022-03-03 19:13:51,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750126263] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:51,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95924842] [2022-03-03 19:13:51,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:51,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:51,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:51,065 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:51,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-03 19:13:51,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:51,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:51,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:51,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95924842] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:51,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:51,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:51,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619176318] [2022-03-03 19:13:51,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:51,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:51,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:51,217 INFO L87 Difference]: Start difference. First operand 275 states and 838 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:51,342 INFO L93 Difference]: Finished difference Result 478 states and 1416 transitions. [2022-03-03 19:13:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:51,343 INFO L225 Difference]: With dead ends: 478 [2022-03-03 19:13:51,343 INFO L226 Difference]: Without dead ends: 469 [2022-03-03 19:13:51,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:51,343 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:51,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 89 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-03-03 19:13:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 275. [2022-03-03 19:13:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.0437956204379564) internal successors, (834), 274 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 834 transitions. [2022-03-03 19:13:51,347 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 834 transitions. Word has length 19 [2022-03-03 19:13:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:51,347 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 834 transitions. [2022-03-03 19:13:51,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 834 transitions. [2022-03-03 19:13:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:51,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:51,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:51,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:51,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2022-03-03 19:13:51,548 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1141791170, now seen corresponding path program 24 times [2022-03-03 19:13:51,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:51,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151929075] [2022-03-03 19:13:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:51,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:51,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151929075] [2022-03-03 19:13:51,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151929075] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:51,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060030717] [2022-03-03 19:13:51,595 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:51,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:51,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:51,596 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:51,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-03 19:13:51,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:51,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:51,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:51,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060030717] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:51,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:51,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:51,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407819292] [2022-03-03 19:13:51,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:51,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:51,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:51,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:51,791 INFO L87 Difference]: Start difference. First operand 275 states and 834 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:51,923 INFO L93 Difference]: Finished difference Result 445 states and 1322 transitions. [2022-03-03 19:13:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:51,924 INFO L225 Difference]: With dead ends: 445 [2022-03-03 19:13:51,924 INFO L226 Difference]: Without dead ends: 445 [2022-03-03 19:13:51,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:51,924 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:51,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 95 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-03-03 19:13:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 255. [2022-03-03 19:13:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.031496062992126) internal successors, (770), 254 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 770 transitions. [2022-03-03 19:13:51,928 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 770 transitions. Word has length 19 [2022-03-03 19:13:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:51,928 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 770 transitions. [2022-03-03 19:13:51,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 770 transitions. [2022-03-03 19:13:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:51,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:51,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:51,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:52,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2022-03-03 19:13:52,132 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash 344859718, now seen corresponding path program 25 times [2022-03-03 19:13:52,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:52,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373497809] [2022-03-03 19:13:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:52,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:52,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:52,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373497809] [2022-03-03 19:13:52,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373497809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:52,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682442764] [2022-03-03 19:13:52,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:52,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:52,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:52,174 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:52,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-03 19:13:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:52,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:52,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:52,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:52,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682442764] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:52,350 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:52,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:52,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740857311] [2022-03-03 19:13:52,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:52,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:52,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:52,351 INFO L87 Difference]: Start difference. First operand 255 states and 770 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:52,461 INFO L93 Difference]: Finished difference Result 497 states and 1455 transitions. [2022-03-03 19:13:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:52,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:52,462 INFO L225 Difference]: With dead ends: 497 [2022-03-03 19:13:52,462 INFO L226 Difference]: Without dead ends: 497 [2022-03-03 19:13:52,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:52,462 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:52,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 76 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-03-03 19:13:52,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 263. [2022-03-03 19:13:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.0839694656488548) internal successors, (808), 262 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 808 transitions. [2022-03-03 19:13:52,466 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 808 transitions. Word has length 19 [2022-03-03 19:13:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 808 transitions. [2022-03-03 19:13:52,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 808 transitions. [2022-03-03 19:13:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:52,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:52,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:52,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:52,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:52,682 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 183639778, now seen corresponding path program 26 times [2022-03-03 19:13:52,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:52,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075188917] [2022-03-03 19:13:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:52,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:52,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075188917] [2022-03-03 19:13:52,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075188917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:52,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814429228] [2022-03-03 19:13:52,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:52,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:52,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:52,716 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:52,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-03 19:13:52,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:52,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:52,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:52,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:52,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:52,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814429228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:52,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:52,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:52,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727669012] [2022-03-03 19:13:52,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:52,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:52,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:52,907 INFO L87 Difference]: Start difference. First operand 263 states and 808 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:53,019 INFO L93 Difference]: Finished difference Result 479 states and 1386 transitions. [2022-03-03 19:13:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:53,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:53,020 INFO L225 Difference]: With dead ends: 479 [2022-03-03 19:13:53,020 INFO L226 Difference]: Without dead ends: 473 [2022-03-03 19:13:53,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:53,021 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:53,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-03-03 19:13:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 266. [2022-03-03 19:13:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.060377358490566) internal successors, (811), 265 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 811 transitions. [2022-03-03 19:13:53,024 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 811 transitions. Word has length 19 [2022-03-03 19:13:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:53,024 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 811 transitions. [2022-03-03 19:13:53,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 811 transitions. [2022-03-03 19:13:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:53,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:53,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:53,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-03-03 19:13:53,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:53,235 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash -18483358, now seen corresponding path program 25 times [2022-03-03 19:13:53,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:53,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575706340] [2022-03-03 19:13:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:53,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:53,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575706340] [2022-03-03 19:13:53,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575706340] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:53,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:53,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:53,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819474167] [2022-03-03 19:13:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:53,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:53,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:53,274 INFO L87 Difference]: Start difference. First operand 266 states and 811 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:53,385 INFO L93 Difference]: Finished difference Result 463 states and 1340 transitions. [2022-03-03 19:13:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:53,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:53,386 INFO L225 Difference]: With dead ends: 463 [2022-03-03 19:13:53,386 INFO L226 Difference]: Without dead ends: 455 [2022-03-03 19:13:53,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:53,386 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:53,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 54 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-03-03 19:13:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 284. [2022-03-03 19:13:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.060070671378092) internal successors, (866), 283 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 866 transitions. [2022-03-03 19:13:53,390 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 866 transitions. Word has length 19 [2022-03-03 19:13:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:53,390 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 866 transitions. [2022-03-03 19:13:53,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 866 transitions. [2022-03-03 19:13:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:53,391 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:53,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:53,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-03 19:13:53,391 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash 889178054, now seen corresponding path program 26 times [2022-03-03 19:13:53,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:53,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659904407] [2022-03-03 19:13:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:53,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:53,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659904407] [2022-03-03 19:13:53,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659904407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:53,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:53,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:53,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482357296] [2022-03-03 19:13:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:53,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:53,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:53,429 INFO L87 Difference]: Start difference. First operand 284 states and 866 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:53,540 INFO L93 Difference]: Finished difference Result 469 states and 1355 transitions. [2022-03-03 19:13:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:53,541 INFO L225 Difference]: With dead ends: 469 [2022-03-03 19:13:53,541 INFO L226 Difference]: Without dead ends: 461 [2022-03-03 19:13:53,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:53,541 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:53,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 56 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-03 19:13:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 284. [2022-03-03 19:13:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.0636042402826855) internal successors, (867), 283 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 867 transitions. [2022-03-03 19:13:53,545 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 867 transitions. Word has length 19 [2022-03-03 19:13:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:53,545 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 867 transitions. [2022-03-03 19:13:53,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 867 transitions. [2022-03-03 19:13:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:53,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:53,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-03 19:13:53,546 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1985360600, now seen corresponding path program 27 times [2022-03-03 19:13:53,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:53,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426496076] [2022-03-03 19:13:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:53,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:53,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426496076] [2022-03-03 19:13:53,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426496076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:53,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494847942] [2022-03-03 19:13:53,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:53,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:53,588 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:53,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-03 19:13:53,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:13:53,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:53,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:53,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:53,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:53,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494847942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:53,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:53,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:53,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249022675] [2022-03-03 19:13:53,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:53,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:53,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:53,783 INFO L87 Difference]: Start difference. First operand 284 states and 867 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:53,882 INFO L93 Difference]: Finished difference Result 505 states and 1462 transitions. [2022-03-03 19:13:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:53,883 INFO L225 Difference]: With dead ends: 505 [2022-03-03 19:13:53,883 INFO L226 Difference]: Without dead ends: 505 [2022-03-03 19:13:53,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:53,883 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 97 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:53,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 66 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-03 19:13:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 282. [2022-03-03 19:13:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 3.0569395017793592) internal successors, (859), 281 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 859 transitions. [2022-03-03 19:13:53,887 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 859 transitions. Word has length 19 [2022-03-03 19:13:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:53,887 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 859 transitions. [2022-03-03 19:13:53,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 859 transitions. [2022-03-03 19:13:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:53,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:53,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:53,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:54,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:54,090 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1683003166, now seen corresponding path program 27 times [2022-03-03 19:13:54,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:54,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951903909] [2022-03-03 19:13:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:54,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951903909] [2022-03-03 19:13:54,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951903909] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:54,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92921455] [2022-03-03 19:13:54,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:54,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:54,131 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:54,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-03 19:13:54,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:54,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:54,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:54,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92921455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:54,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:54,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:54,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049959289] [2022-03-03 19:13:54,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:54,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:54,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:54,309 INFO L87 Difference]: Start difference. First operand 282 states and 859 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:54,434 INFO L93 Difference]: Finished difference Result 469 states and 1342 transitions. [2022-03-03 19:13:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:54,435 INFO L225 Difference]: With dead ends: 469 [2022-03-03 19:13:54,435 INFO L226 Difference]: Without dead ends: 461 [2022-03-03 19:13:54,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:54,436 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:54,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 106 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-03 19:13:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 275. [2022-03-03 19:13:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.065693430656934) internal successors, (840), 274 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 840 transitions. [2022-03-03 19:13:54,440 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 840 transitions. Word has length 19 [2022-03-03 19:13:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:54,440 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 840 transitions. [2022-03-03 19:13:54,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 840 transitions. [2022-03-03 19:13:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:54,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:54,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:54,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-03-03 19:13:54,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:54,655 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:54,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1244843396, now seen corresponding path program 28 times [2022-03-03 19:13:54,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:54,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749151528] [2022-03-03 19:13:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:54,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749151528] [2022-03-03 19:13:54,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749151528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:54,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544971492] [2022-03-03 19:13:54,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:54,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:54,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:54,694 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:54,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-03 19:13:54,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:54,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:54,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:54,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544971492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:54,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:54,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:54,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999230796] [2022-03-03 19:13:54,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:54,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:54,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:54,887 INFO L87 Difference]: Start difference. First operand 275 states and 840 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:54,989 INFO L93 Difference]: Finished difference Result 453 states and 1315 transitions. [2022-03-03 19:13:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:54,990 INFO L225 Difference]: With dead ends: 453 [2022-03-03 19:13:54,990 INFO L226 Difference]: Without dead ends: 444 [2022-03-03 19:13:54,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:54,990 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:54,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 100 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-03-03 19:13:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 275. [2022-03-03 19:13:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.051094890510949) internal successors, (836), 274 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 836 transitions. [2022-03-03 19:13:54,994 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 836 transitions. Word has length 19 [2022-03-03 19:13:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:54,994 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 836 transitions. [2022-03-03 19:13:54,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 836 transitions. [2022-03-03 19:13:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:54,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:54,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:55,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:55,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2022-03-03 19:13:55,211 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1095955806, now seen corresponding path program 28 times [2022-03-03 19:13:55,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:55,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051045485] [2022-03-03 19:13:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:55,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:55,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051045485] [2022-03-03 19:13:55,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051045485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:55,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699048454] [2022-03-03 19:13:55,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:55,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:55,271 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:55,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-03 19:13:55,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:55,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:55,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:55,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:55,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:55,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699048454] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:55,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:55,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:55,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216910557] [2022-03-03 19:13:55,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:55,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:55,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:55,444 INFO L87 Difference]: Start difference. First operand 275 states and 836 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:55,555 INFO L93 Difference]: Finished difference Result 450 states and 1322 transitions. [2022-03-03 19:13:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:55,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:55,556 INFO L225 Difference]: With dead ends: 450 [2022-03-03 19:13:55,556 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 19:13:55,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:55,557 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:55,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 92 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 19:13:55,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 271. [2022-03-03 19:13:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.051851851851852) internal successors, (824), 270 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 824 transitions. [2022-03-03 19:13:55,561 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 824 transitions. Word has length 19 [2022-03-03 19:13:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:55,561 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 824 transitions. [2022-03-03 19:13:55,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 824 transitions. [2022-03-03 19:13:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:55,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:55,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:55,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:55,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable266 [2022-03-03 19:13:55,764 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1436582652, now seen corresponding path program 29 times [2022-03-03 19:13:55,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:55,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001926746] [2022-03-03 19:13:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:55,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:55,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001926746] [2022-03-03 19:13:55,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001926746] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:55,801 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:55,801 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:55,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018862363] [2022-03-03 19:13:55,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:55,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:55,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:55,801 INFO L87 Difference]: Start difference. First operand 271 states and 824 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:55,912 INFO L93 Difference]: Finished difference Result 424 states and 1226 transitions. [2022-03-03 19:13:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:55,913 INFO L225 Difference]: With dead ends: 424 [2022-03-03 19:13:55,913 INFO L226 Difference]: Without dead ends: 418 [2022-03-03 19:13:55,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:55,913 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:55,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 60 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:55,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-03 19:13:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 281. [2022-03-03 19:13:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.032142857142857) internal successors, (849), 280 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 849 transitions. [2022-03-03 19:13:55,917 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 849 transitions. Word has length 19 [2022-03-03 19:13:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:55,917 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 849 transitions. [2022-03-03 19:13:55,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 849 transitions. [2022-03-03 19:13:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:55,917 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:55,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:55,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-03 19:13:55,917 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 104028714, now seen corresponding path program 30 times [2022-03-03 19:13:55,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:55,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427554879] [2022-03-03 19:13:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:55,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:55,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427554879] [2022-03-03 19:13:55,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427554879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:55,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:55,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:55,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993134076] [2022-03-03 19:13:55,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:55,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:55,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:55,952 INFO L87 Difference]: Start difference. First operand 281 states and 849 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:56,038 INFO L93 Difference]: Finished difference Result 388 states and 1143 transitions. [2022-03-03 19:13:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:56,039 INFO L225 Difference]: With dead ends: 388 [2022-03-03 19:13:56,039 INFO L226 Difference]: Without dead ends: 377 [2022-03-03 19:13:56,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:56,039 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:56,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 46 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-03 19:13:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 271. [2022-03-03 19:13:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0481481481481483) internal successors, (823), 270 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 823 transitions. [2022-03-03 19:13:56,042 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 823 transitions. Word has length 19 [2022-03-03 19:13:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 823 transitions. [2022-03-03 19:13:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 823 transitions. [2022-03-03 19:13:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:56,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:56,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:56,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-03 19:13:56,043 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1518471746, now seen corresponding path program 29 times [2022-03-03 19:13:56,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:56,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482577093] [2022-03-03 19:13:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:56,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482577093] [2022-03-03 19:13:56,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482577093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:56,083 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:56,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:56,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228228639] [2022-03-03 19:13:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:56,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:56,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:56,083 INFO L87 Difference]: Start difference. First operand 271 states and 823 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:56,213 INFO L93 Difference]: Finished difference Result 401 states and 1166 transitions. [2022-03-03 19:13:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:56,214 INFO L225 Difference]: With dead ends: 401 [2022-03-03 19:13:56,214 INFO L226 Difference]: Without dead ends: 395 [2022-03-03 19:13:56,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:56,215 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:56,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 65 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-03 19:13:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 277. [2022-03-03 19:13:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.032608695652174) internal successors, (837), 276 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 837 transitions. [2022-03-03 19:13:56,218 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 837 transitions. Word has length 19 [2022-03-03 19:13:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:56,219 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 837 transitions. [2022-03-03 19:13:56,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 837 transitions. [2022-03-03 19:13:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:56,219 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:56,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:56,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-03 19:13:56,219 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -643398906, now seen corresponding path program 30 times [2022-03-03 19:13:56,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:56,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798623932] [2022-03-03 19:13:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:56,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798623932] [2022-03-03 19:13:56,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798623932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:56,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:56,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:56,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524586626] [2022-03-03 19:13:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:56,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:56,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:56,267 INFO L87 Difference]: Start difference. First operand 277 states and 837 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:56,403 INFO L93 Difference]: Finished difference Result 379 states and 1129 transitions. [2022-03-03 19:13:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:56,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:56,404 INFO L225 Difference]: With dead ends: 379 [2022-03-03 19:13:56,404 INFO L226 Difference]: Without dead ends: 379 [2022-03-03 19:13:56,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:56,405 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:56,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 66 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-03 19:13:56,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 255. [2022-03-03 19:13:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.031496062992126) internal successors, (770), 254 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 770 transitions. [2022-03-03 19:13:56,409 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 770 transitions. Word has length 19 [2022-03-03 19:13:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:56,409 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 770 transitions. [2022-03-03 19:13:56,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 770 transitions. [2022-03-03 19:13:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:56,410 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:56,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:56,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-03-03 19:13:56,410 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:56,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash -308718346, now seen corresponding path program 31 times [2022-03-03 19:13:56,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:56,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599172507] [2022-03-03 19:13:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:56,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599172507] [2022-03-03 19:13:56,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599172507] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:56,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860131270] [2022-03-03 19:13:56,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:56,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:56,448 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:56,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-03 19:13:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:56,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:56,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860131270] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:56,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:56,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:13:56,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326754060] [2022-03-03 19:13:56,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:56,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:13:56,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:13:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:56,594 INFO L87 Difference]: Start difference. First operand 255 states and 770 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:56,695 INFO L93 Difference]: Finished difference Result 485 states and 1377 transitions. [2022-03-03 19:13:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:56,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:56,696 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:13:56,696 INFO L226 Difference]: Without dead ends: 461 [2022-03-03 19:13:56,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:13:56,696 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:56,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 92 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-03 19:13:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 255. [2022-03-03 19:13:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.0039370078740157) internal successors, (763), 254 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 763 transitions. [2022-03-03 19:13:56,700 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 763 transitions. Word has length 19 [2022-03-03 19:13:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:56,700 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 763 transitions. [2022-03-03 19:13:56,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 763 transitions. [2022-03-03 19:13:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:56,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:56,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:56,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-03-03 19:13:56,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:56,916 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1569689966, now seen corresponding path program 31 times [2022-03-03 19:13:56,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:56,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665563690] [2022-03-03 19:13:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:56,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665563690] [2022-03-03 19:13:56,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665563690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:56,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164324203] [2022-03-03 19:13:56,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:56,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:56,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:56,955 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:56,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-03 19:13:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:56,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:56,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:57,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:57,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164324203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:57,110 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:57,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:13:57,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369928046] [2022-03-03 19:13:57,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:57,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:13:57,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:13:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:13:57,111 INFO L87 Difference]: Start difference. First operand 255 states and 763 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:57,232 INFO L93 Difference]: Finished difference Result 428 states and 1251 transitions. [2022-03-03 19:13:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:57,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:57,233 INFO L225 Difference]: With dead ends: 428 [2022-03-03 19:13:57,234 INFO L226 Difference]: Without dead ends: 428 [2022-03-03 19:13:57,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:57,234 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:57,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 81 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-03 19:13:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 255. [2022-03-03 19:13:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.0039370078740157) internal successors, (763), 254 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 763 transitions. [2022-03-03 19:13:57,237 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 763 transitions. Word has length 19 [2022-03-03 19:13:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:57,237 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 763 transitions. [2022-03-03 19:13:57,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 763 transitions. [2022-03-03 19:13:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:57,238 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:57,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:57,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:57,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:57,438 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 822526646, now seen corresponding path program 32 times [2022-03-03 19:13:57,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:57,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315386939] [2022-03-03 19:13:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:57,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:57,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315386939] [2022-03-03 19:13:57,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315386939] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:57,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063994615] [2022-03-03 19:13:57,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:57,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:57,488 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:57,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-03 19:13:57,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:57,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:57,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:57,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:57,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:57,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063994615] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:57,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:57,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:57,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379254498] [2022-03-03 19:13:57,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:57,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:57,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:57,670 INFO L87 Difference]: Start difference. First operand 255 states and 763 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:57,765 INFO L93 Difference]: Finished difference Result 485 states and 1396 transitions. [2022-03-03 19:13:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:57,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:57,766 INFO L225 Difference]: With dead ends: 485 [2022-03-03 19:13:57,766 INFO L226 Difference]: Without dead ends: 485 [2022-03-03 19:13:57,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:57,766 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 112 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:57,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 73 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-03-03 19:13:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 259. [2022-03-03 19:13:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.0348837209302326) internal successors, (783), 258 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 783 transitions. [2022-03-03 19:13:57,770 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 783 transitions. Word has length 19 [2022-03-03 19:13:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:57,770 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 783 transitions. [2022-03-03 19:13:57,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 783 transitions. [2022-03-03 19:13:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:57,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:57,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:57,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-03-03 19:13:57,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:57,987 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1456875062, now seen corresponding path program 32 times [2022-03-03 19:13:57,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:57,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320610563] [2022-03-03 19:13:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:58,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:58,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320610563] [2022-03-03 19:13:58,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320610563] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:58,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903853224] [2022-03-03 19:13:58,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:58,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:58,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:58,024 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:58,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-03 19:13:58,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:58,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:58,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:58,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:58,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:58,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903853224] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:58,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:58,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:58,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129149266] [2022-03-03 19:13:58,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:58,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:58,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:58,164 INFO L87 Difference]: Start difference. First operand 259 states and 783 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:58,248 INFO L93 Difference]: Finished difference Result 429 states and 1254 transitions. [2022-03-03 19:13:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:58,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:58,249 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:13:58,249 INFO L226 Difference]: Without dead ends: 421 [2022-03-03 19:13:58,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:58,249 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:58,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 58 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-03-03 19:13:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 271. [2022-03-03 19:13:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.033333333333333) internal successors, (819), 270 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 819 transitions. [2022-03-03 19:13:58,253 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 819 transitions. Word has length 19 [2022-03-03 19:13:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:58,253 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 819 transitions. [2022-03-03 19:13:58,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 819 transitions. [2022-03-03 19:13:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:58,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:58,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:58,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-03-03 19:13:58,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:58,469 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1416578000, now seen corresponding path program 33 times [2022-03-03 19:13:58,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:58,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910130485] [2022-03-03 19:13:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:58,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:58,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910130485] [2022-03-03 19:13:58,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910130485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:58,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834186689] [2022-03-03 19:13:58,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:58,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:58,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:58,508 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:58,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-03 19:13:58,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:58,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:58,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:58,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:58,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:58,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834186689] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:58,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:58,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:13:58,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710809972] [2022-03-03 19:13:58,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:58,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:13:58,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:13:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:13:58,712 INFO L87 Difference]: Start difference. First operand 271 states and 819 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:58,849 INFO L93 Difference]: Finished difference Result 498 states and 1425 transitions. [2022-03-03 19:13:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:58,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:58,850 INFO L225 Difference]: With dead ends: 498 [2022-03-03 19:13:58,850 INFO L226 Difference]: Without dead ends: 489 [2022-03-03 19:13:58,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:13:58,850 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:58,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 108 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-03-03 19:13:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 271. [2022-03-03 19:13:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0185185185185186) internal successors, (815), 270 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 815 transitions. [2022-03-03 19:13:58,854 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 815 transitions. Word has length 19 [2022-03-03 19:13:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:58,854 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 815 transitions. [2022-03-03 19:13:58,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 815 transitions. [2022-03-03 19:13:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:58,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:58,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:58,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:59,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:59,070 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -537590094, now seen corresponding path program 33 times [2022-03-03 19:13:59,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:59,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505642769] [2022-03-03 19:13:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:59,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505642769] [2022-03-03 19:13:59,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505642769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:59,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777795776] [2022-03-03 19:13:59,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:59,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:59,111 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:59,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-03 19:13:59,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:59,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:59,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777795776] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:59,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:59,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:13:59,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794346969] [2022-03-03 19:13:59,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:59,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:13:59,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:59,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:13:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:13:59,236 INFO L87 Difference]: Start difference. First operand 271 states and 815 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:59,338 INFO L93 Difference]: Finished difference Result 447 states and 1310 transitions. [2022-03-03 19:13:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:59,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:59,340 INFO L225 Difference]: With dead ends: 447 [2022-03-03 19:13:59,340 INFO L226 Difference]: Without dead ends: 447 [2022-03-03 19:13:59,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:13:59,340 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:59,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 78 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-03-03 19:13:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 260. [2022-03-03 19:13:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.0193050193050195) internal successors, (782), 259 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 782 transitions. [2022-03-03 19:13:59,343 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 782 transitions. Word has length 19 [2022-03-03 19:13:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:59,343 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 782 transitions. [2022-03-03 19:13:59,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 782 transitions. [2022-03-03 19:13:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:59,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:59,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:59,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:59,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2022-03-03 19:13:59,559 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash -972643950, now seen corresponding path program 34 times [2022-03-03 19:13:59,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:59,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936490714] [2022-03-03 19:13:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:59,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936490714] [2022-03-03 19:13:59,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936490714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:59,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:59,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:59,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363821359] [2022-03-03 19:13:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:59,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:59,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:59,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:59,595 INFO L87 Difference]: Start difference. First operand 260 states and 782 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:59,678 INFO L93 Difference]: Finished difference Result 556 states and 1559 transitions. [2022-03-03 19:13:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:59,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:59,680 INFO L225 Difference]: With dead ends: 556 [2022-03-03 19:13:59,680 INFO L226 Difference]: Without dead ends: 532 [2022-03-03 19:13:59,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:59,680 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:59,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 66 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:59,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-03-03 19:13:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 264. [2022-03-03 19:13:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.9961977186311786) internal successors, (788), 263 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 788 transitions. [2022-03-03 19:13:59,684 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 788 transitions. Word has length 19 [2022-03-03 19:13:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:59,684 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 788 transitions. [2022-03-03 19:13:59,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 788 transitions. [2022-03-03 19:13:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:59,684 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:59,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:59,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-03-03 19:13:59,684 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1692369206, now seen corresponding path program 35 times [2022-03-03 19:13:59,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:59,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005044248] [2022-03-03 19:13:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:59,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005044248] [2022-03-03 19:13:59,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005044248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:59,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:59,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:59,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586049054] [2022-03-03 19:13:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:59,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:59,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:59,731 INFO L87 Difference]: Start difference. First operand 264 states and 788 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:59,808 INFO L93 Difference]: Finished difference Result 540 states and 1513 transitions. [2022-03-03 19:13:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:59,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:59,809 INFO L225 Difference]: With dead ends: 540 [2022-03-03 19:13:59,809 INFO L226 Difference]: Without dead ends: 534 [2022-03-03 19:13:59,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:59,810 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:59,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 53 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-03-03 19:13:59,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 274. [2022-03-03 19:13:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.978021978021978) internal successors, (813), 273 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 813 transitions. [2022-03-03 19:13:59,813 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 813 transitions. Word has length 19 [2022-03-03 19:13:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:59,814 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 813 transitions. [2022-03-03 19:13:59,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 813 transitions. [2022-03-03 19:13:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:59,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:59,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:59,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-03-03 19:13:59,814 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1675752376, now seen corresponding path program 36 times [2022-03-03 19:13:59,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:59,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786989400] [2022-03-03 19:13:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:59,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786989400] [2022-03-03 19:13:59,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786989400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:13:59,846 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:13:59,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:13:59,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754607386] [2022-03-03 19:13:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:13:59,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:13:59,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:13:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:13:59,846 INFO L87 Difference]: Start difference. First operand 274 states and 813 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:59,922 INFO L93 Difference]: Finished difference Result 504 states and 1430 transitions. [2022-03-03 19:13:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:13:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:13:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:59,923 INFO L225 Difference]: With dead ends: 504 [2022-03-03 19:13:59,923 INFO L226 Difference]: Without dead ends: 489 [2022-03-03 19:13:59,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:13:59,923 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:59,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 53 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:13:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-03-03 19:13:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 260. [2022-03-03 19:13:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.011583011583012) internal successors, (780), 259 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 780 transitions. [2022-03-03 19:13:59,927 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 780 transitions. Word has length 19 [2022-03-03 19:13:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:59,928 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 780 transitions. [2022-03-03 19:13:59,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 780 transitions. [2022-03-03 19:13:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:13:59,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:59,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:59,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-03-03 19:13:59,928 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1752306606, now seen corresponding path program 34 times [2022-03-03 19:13:59,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:59,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844873202] [2022-03-03 19:13:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:59,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844873202] [2022-03-03 19:13:59,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844873202] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:59,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140287129] [2022-03-03 19:13:59,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:59,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:59,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:59,961 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:13:59,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-03 19:13:59,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:59,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:59,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:13:59,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:00,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:00,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140287129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:00,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:00,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:14:00,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115084703] [2022-03-03 19:14:00,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:00,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:14:00,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:14:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:14:00,101 INFO L87 Difference]: Start difference. First operand 260 states and 780 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:00,235 INFO L93 Difference]: Finished difference Result 588 states and 1723 transitions. [2022-03-03 19:14:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:00,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:00,236 INFO L225 Difference]: With dead ends: 588 [2022-03-03 19:14:00,236 INFO L226 Difference]: Without dead ends: 588 [2022-03-03 19:14:00,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:00,236 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:00,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 84 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-03-03 19:14:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 266. [2022-03-03 19:14:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.0113207547169814) internal successors, (798), 265 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 798 transitions. [2022-03-03 19:14:00,241 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 798 transitions. Word has length 19 [2022-03-03 19:14:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:00,241 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 798 transitions. [2022-03-03 19:14:00,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 798 transitions. [2022-03-03 19:14:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:00,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:00,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:00,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:00,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:00,442 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -323987880, now seen corresponding path program 35 times [2022-03-03 19:14:00,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:00,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318957644] [2022-03-03 19:14:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:00,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:00,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:00,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318957644] [2022-03-03 19:14:00,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318957644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:00,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30441670] [2022-03-03 19:14:00,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:00,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:00,479 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:00,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-03 19:14:00,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:00,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:00,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:00,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:00,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30441670] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:00,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:00,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:00,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954847922] [2022-03-03 19:14:00,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:00,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:00,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:00,646 INFO L87 Difference]: Start difference. First operand 266 states and 798 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:00,762 INFO L93 Difference]: Finished difference Result 527 states and 1532 transitions. [2022-03-03 19:14:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:00,763 INFO L225 Difference]: With dead ends: 527 [2022-03-03 19:14:00,763 INFO L226 Difference]: Without dead ends: 521 [2022-03-03 19:14:00,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:00,763 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 91 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:00,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 68 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-03-03 19:14:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 278. [2022-03-03 19:14:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.0216606498194944) internal successors, (837), 277 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 837 transitions. [2022-03-03 19:14:00,767 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 837 transitions. Word has length 19 [2022-03-03 19:14:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:00,767 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 837 transitions. [2022-03-03 19:14:00,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 837 transitions. [2022-03-03 19:14:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:00,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:00,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:00,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-03-03 19:14:00,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:00,971 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:00,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash -916180964, now seen corresponding path program 36 times [2022-03-03 19:14:00,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:00,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400186970] [2022-03-03 19:14:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:00,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:01,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:01,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400186970] [2022-03-03 19:14:01,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400186970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:01,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099898547] [2022-03-03 19:14:01,009 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:01,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:01,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:01,011 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:01,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-03 19:14:01,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:01,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:01,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:01,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:01,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099898547] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:01,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:01,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:01,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637316992] [2022-03-03 19:14:01,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:01,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:01,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:01,162 INFO L87 Difference]: Start difference. First operand 278 states and 837 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:01,260 INFO L93 Difference]: Finished difference Result 505 states and 1485 transitions. [2022-03-03 19:14:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:01,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:01,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:01,261 INFO L225 Difference]: With dead ends: 505 [2022-03-03 19:14:01,261 INFO L226 Difference]: Without dead ends: 505 [2022-03-03 19:14:01,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:01,262 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:01,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 90 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-03 19:14:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 260. [2022-03-03 19:14:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.011583011583012) internal successors, (780), 259 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 780 transitions. [2022-03-03 19:14:01,265 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 780 transitions. Word has length 19 [2022-03-03 19:14:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:01,265 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 780 transitions. [2022-03-03 19:14:01,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 780 transitions. [2022-03-03 19:14:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:01,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:01,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:01,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:01,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-03-03 19:14:01,479 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1415220150, now seen corresponding path program 37 times [2022-03-03 19:14:01,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:01,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110764263] [2022-03-03 19:14:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:01,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:01,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110764263] [2022-03-03 19:14:01,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110764263] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:01,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115257749] [2022-03-03 19:14:01,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:01,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:01,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:01,512 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:01,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-03 19:14:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:01,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:01,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:01,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:01,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115257749] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:01,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:01,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:01,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936604818] [2022-03-03 19:14:01,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:01,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:01,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:01,680 INFO L87 Difference]: Start difference. First operand 260 states and 780 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:01,764 INFO L93 Difference]: Finished difference Result 581 states and 1677 transitions. [2022-03-03 19:14:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:01,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:01,765 INFO L225 Difference]: With dead ends: 581 [2022-03-03 19:14:01,765 INFO L226 Difference]: Without dead ends: 581 [2022-03-03 19:14:01,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:01,766 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 130 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:01,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 75 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-03-03 19:14:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 268. [2022-03-03 19:14:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0636704119850187) internal successors, (818), 267 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 818 transitions. [2022-03-03 19:14:01,770 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 818 transitions. Word has length 19 [2022-03-03 19:14:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:01,770 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 818 transitions. [2022-03-03 19:14:01,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 818 transitions. [2022-03-03 19:14:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:01,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:01,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:01,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:01,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:01,986 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1254000210, now seen corresponding path program 38 times [2022-03-03 19:14:01,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:01,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561601941] [2022-03-03 19:14:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:02,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561601941] [2022-03-03 19:14:02,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561601941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:02,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499847257] [2022-03-03 19:14:02,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:02,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:02,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:02,015 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:02,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-03 19:14:02,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:02,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:02,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:02,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499847257] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:02,144 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:02,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:02,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842078198] [2022-03-03 19:14:02,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:02,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:02,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:02,145 INFO L87 Difference]: Start difference. First operand 268 states and 818 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:02,222 INFO L93 Difference]: Finished difference Result 563 states and 1608 transitions. [2022-03-03 19:14:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:02,223 INFO L225 Difference]: With dead ends: 563 [2022-03-03 19:14:02,223 INFO L226 Difference]: Without dead ends: 557 [2022-03-03 19:14:02,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:02,224 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 119 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:02,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 82 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-03-03 19:14:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 271. [2022-03-03 19:14:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0407407407407407) internal successors, (821), 270 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 821 transitions. [2022-03-03 19:14:02,228 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 821 transitions. Word has length 19 [2022-03-03 19:14:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:02,228 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 821 transitions. [2022-03-03 19:14:02,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 821 transitions. [2022-03-03 19:14:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:02,228 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:02,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:02,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:02,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:02,431 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1051877074, now seen corresponding path program 37 times [2022-03-03 19:14:02,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:02,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201485165] [2022-03-03 19:14:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:02,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:02,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201485165] [2022-03-03 19:14:02,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201485165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:02,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:02,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:02,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894156992] [2022-03-03 19:14:02,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:02,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:02,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:02,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:02,466 INFO L87 Difference]: Start difference. First operand 271 states and 821 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:02,565 INFO L93 Difference]: Finished difference Result 517 states and 1498 transitions. [2022-03-03 19:14:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:02,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:02,566 INFO L225 Difference]: With dead ends: 517 [2022-03-03 19:14:02,566 INFO L226 Difference]: Without dead ends: 509 [2022-03-03 19:14:02,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:02,566 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:02,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 52 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-03-03 19:14:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 281. [2022-03-03 19:14:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.057142857142857) internal successors, (856), 280 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 856 transitions. [2022-03-03 19:14:02,570 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 856 transitions. Word has length 19 [2022-03-03 19:14:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:02,570 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 856 transitions. [2022-03-03 19:14:02,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 856 transitions. [2022-03-03 19:14:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:02,571 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:02,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:02,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-03-03 19:14:02,571 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1959538486, now seen corresponding path program 38 times [2022-03-03 19:14:02,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:02,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472978640] [2022-03-03 19:14:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:02,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472978640] [2022-03-03 19:14:02,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472978640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:02,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:02,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:02,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583974915] [2022-03-03 19:14:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:02,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:02,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:02,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:02,610 INFO L87 Difference]: Start difference. First operand 281 states and 856 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:02,719 INFO L93 Difference]: Finished difference Result 507 states and 1473 transitions. [2022-03-03 19:14:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:02,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:02,721 INFO L225 Difference]: With dead ends: 507 [2022-03-03 19:14:02,721 INFO L226 Difference]: Without dead ends: 499 [2022-03-03 19:14:02,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:02,721 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:02,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 63 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-03-03 19:14:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 281. [2022-03-03 19:14:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.0607142857142855) internal successors, (857), 280 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 857 transitions. [2022-03-03 19:14:02,725 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 857 transitions. Word has length 19 [2022-03-03 19:14:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:02,725 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 857 transitions. [2022-03-03 19:14:02,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 857 transitions. [2022-03-03 19:14:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:02,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:02,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:02,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-03-03 19:14:02,726 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1239246264, now seen corresponding path program 39 times [2022-03-03 19:14:02,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:02,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825752004] [2022-03-03 19:14:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:02,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825752004] [2022-03-03 19:14:02,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825752004] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:02,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508415517] [2022-03-03 19:14:02,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:02,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:02,774 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:02,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-03 19:14:02,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:14:02,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:02,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:02,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:03,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508415517] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:03,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:03,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:03,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339445381] [2022-03-03 19:14:03,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:03,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:03,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:03,031 INFO L87 Difference]: Start difference. First operand 281 states and 857 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:03,169 INFO L93 Difference]: Finished difference Result 628 states and 1784 transitions. [2022-03-03 19:14:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:03,171 INFO L225 Difference]: With dead ends: 628 [2022-03-03 19:14:03,171 INFO L226 Difference]: Without dead ends: 628 [2022-03-03 19:14:03,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:03,171 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 67 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:03,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 126 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-03-03 19:14:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 279. [2022-03-03 19:14:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 3.053956834532374) internal successors, (849), 278 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 849 transitions. [2022-03-03 19:14:03,176 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 849 transitions. Word has length 19 [2022-03-03 19:14:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:03,176 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 849 transitions. [2022-03-03 19:14:03,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 849 transitions. [2022-03-03 19:14:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:03,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:03,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:03,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:03,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2022-03-03 19:14:03,377 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1541603698, now seen corresponding path program 39 times [2022-03-03 19:14:03,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:03,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894566202] [2022-03-03 19:14:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:03,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:03,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894566202] [2022-03-03 19:14:03,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894566202] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:03,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536229687] [2022-03-03 19:14:03,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:03,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:03,415 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:03,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-03 19:14:03,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:03,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:03,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:03,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:03,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:03,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536229687] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:03,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:03,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:03,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522442470] [2022-03-03 19:14:03,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:03,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:03,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:03,560 INFO L87 Difference]: Start difference. First operand 279 states and 849 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:03,661 INFO L93 Difference]: Finished difference Result 549 states and 1569 transitions. [2022-03-03 19:14:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:03,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:03,662 INFO L225 Difference]: With dead ends: 549 [2022-03-03 19:14:03,662 INFO L226 Difference]: Without dead ends: 541 [2022-03-03 19:14:03,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:03,662 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 101 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:03,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 82 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-03-03 19:14:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 272. [2022-03-03 19:14:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.062730627306273) internal successors, (830), 271 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 830 transitions. [2022-03-03 19:14:03,666 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 830 transitions. Word has length 19 [2022-03-03 19:14:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:03,667 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 830 transitions. [2022-03-03 19:14:03,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 830 transitions. [2022-03-03 19:14:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:03,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:03,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:03,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-03-03 19:14:03,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2022-03-03 19:14:03,882 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash -174482964, now seen corresponding path program 40 times [2022-03-03 19:14:03,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:03,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565220641] [2022-03-03 19:14:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:03,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:03,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:03,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565220641] [2022-03-03 19:14:03,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565220641] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:03,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583787155] [2022-03-03 19:14:03,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:03,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:03,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:03,933 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:03,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-03 19:14:03,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:03,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:03,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:03,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:04,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:04,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583787155] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:04,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:04,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:04,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189162020] [2022-03-03 19:14:04,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:04,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:04,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:04,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:04,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:04,128 INFO L87 Difference]: Start difference. First operand 272 states and 830 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:04,254 INFO L93 Difference]: Finished difference Result 576 states and 1637 transitions. [2022-03-03 19:14:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:04,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:04,255 INFO L225 Difference]: With dead ends: 576 [2022-03-03 19:14:04,255 INFO L226 Difference]: Without dead ends: 567 [2022-03-03 19:14:04,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:04,255 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 105 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:04,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 111 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-03-03 19:14:04,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 272. [2022-03-03 19:14:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.047970479704797) internal successors, (826), 271 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 826 transitions. [2022-03-03 19:14:04,260 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 826 transitions. Word has length 19 [2022-03-03 19:14:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:04,260 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 826 transitions. [2022-03-03 19:14:04,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 826 transitions. [2022-03-03 19:14:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:04,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:04,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:04,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:04,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:04,479 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:04,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:04,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2128651058, now seen corresponding path program 40 times [2022-03-03 19:14:04,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:04,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62364456] [2022-03-03 19:14:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:04,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:04,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62364456] [2022-03-03 19:14:04,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62364456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:04,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409687609] [2022-03-03 19:14:04,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:04,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:04,522 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-03 19:14:04,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:04,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:04,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:04,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:04,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:04,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409687609] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:04,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:04,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:04,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460482358] [2022-03-03 19:14:04,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:04,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:04,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:04,714 INFO L87 Difference]: Start difference. First operand 272 states and 826 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:04,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:04,833 INFO L93 Difference]: Finished difference Result 530 states and 1549 transitions. [2022-03-03 19:14:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:04,834 INFO L225 Difference]: With dead ends: 530 [2022-03-03 19:14:04,834 INFO L226 Difference]: Without dead ends: 530 [2022-03-03 19:14:04,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:04,835 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:04,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 95 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-03-03 19:14:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 264. [2022-03-03 19:14:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.0190114068441063) internal successors, (794), 263 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 794 transitions. [2022-03-03 19:14:04,839 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 794 transitions. Word has length 19 [2022-03-03 19:14:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:04,839 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 794 transitions. [2022-03-03 19:14:04,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 794 transitions. [2022-03-03 19:14:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:04,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:04,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:04,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-03-03 19:14:05,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:05,047 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1788024212, now seen corresponding path program 41 times [2022-03-03 19:14:05,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200750651] [2022-03-03 19:14:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200750651] [2022-03-03 19:14:05,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200750651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,086 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379794485] [2022-03-03 19:14:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,086 INFO L87 Difference]: Start difference. First operand 264 states and 794 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,180 INFO L93 Difference]: Finished difference Result 551 states and 1548 transitions. [2022-03-03 19:14:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,181 INFO L225 Difference]: With dead ends: 551 [2022-03-03 19:14:05,181 INFO L226 Difference]: Without dead ends: 545 [2022-03-03 19:14:05,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:05,181 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 60 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-03-03 19:14:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 274. [2022-03-03 19:14:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.0) internal successors, (819), 273 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 819 transitions. [2022-03-03 19:14:05,185 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 819 transitions. Word has length 19 [2022-03-03 19:14:05,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,185 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 819 transitions. [2022-03-03 19:14:05,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 819 transitions. [2022-03-03 19:14:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,186 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-03-03 19:14:05,186 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1174389146, now seen corresponding path program 42 times [2022-03-03 19:14:05,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414682297] [2022-03-03 19:14:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414682297] [2022-03-03 19:14:05,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414682297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259144048] [2022-03-03 19:14:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,225 INFO L87 Difference]: Start difference. First operand 274 states and 819 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,309 INFO L93 Difference]: Finished difference Result 515 states and 1465 transitions. [2022-03-03 19:14:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,310 INFO L225 Difference]: With dead ends: 515 [2022-03-03 19:14:05,310 INFO L226 Difference]: Without dead ends: 504 [2022-03-03 19:14:05,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:05,311 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 55 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-03-03 19:14:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 264. [2022-03-03 19:14:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.0152091254752853) internal successors, (793), 263 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 793 transitions. [2022-03-03 19:14:05,314 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 793 transitions. Word has length 19 [2022-03-03 19:14:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,314 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 793 transitions. [2022-03-03 19:14:05,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 793 transitions. [2022-03-03 19:14:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-03-03 19:14:05,315 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1706135118, now seen corresponding path program 41 times [2022-03-03 19:14:05,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844497411] [2022-03-03 19:14:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844497411] [2022-03-03 19:14:05,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844497411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89363642] [2022-03-03 19:14:05,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,341 INFO L87 Difference]: Start difference. First operand 264 states and 793 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,419 INFO L93 Difference]: Finished difference Result 504 states and 1450 transitions. [2022-03-03 19:14:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,419 INFO L225 Difference]: With dead ends: 504 [2022-03-03 19:14:05,420 INFO L226 Difference]: Without dead ends: 498 [2022-03-03 19:14:05,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:05,420 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 66 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-03-03 19:14:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 276. [2022-03-03 19:14:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.018181818181818) internal successors, (830), 275 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 830 transitions. [2022-03-03 19:14:05,423 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 830 transitions. Word has length 19 [2022-03-03 19:14:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,424 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 830 transitions. [2022-03-03 19:14:05,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 830 transitions. [2022-03-03 19:14:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,424 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-03-03 19:14:05,424 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 426961526, now seen corresponding path program 42 times [2022-03-03 19:14:05,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105943765] [2022-03-03 19:14:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105943765] [2022-03-03 19:14:05,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105943765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94619319] [2022-03-03 19:14:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,454 INFO L87 Difference]: Start difference. First operand 276 states and 830 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,538 INFO L93 Difference]: Finished difference Result 482 states and 1413 transitions. [2022-03-03 19:14:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,539 INFO L225 Difference]: With dead ends: 482 [2022-03-03 19:14:05,539 INFO L226 Difference]: Without dead ends: 482 [2022-03-03 19:14:05,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:05,539 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 70 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-03-03 19:14:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 261. [2022-03-03 19:14:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.0153846153846153) internal successors, (784), 260 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 784 transitions. [2022-03-03 19:14:05,543 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 784 transitions. Word has length 19 [2022-03-03 19:14:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,543 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 784 transitions. [2022-03-03 19:14:05,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 784 transitions. [2022-03-03 19:14:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-03-03 19:14:05,543 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash 234227200, now seen corresponding path program 43 times [2022-03-03 19:14:05,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18634644] [2022-03-03 19:14:05,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18634644] [2022-03-03 19:14:05,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18634644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500068411] [2022-03-03 19:14:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,579 INFO L87 Difference]: Start difference. First operand 261 states and 784 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,664 INFO L93 Difference]: Finished difference Result 407 states and 1153 transitions. [2022-03-03 19:14:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,665 INFO L225 Difference]: With dead ends: 407 [2022-03-03 19:14:05,665 INFO L226 Difference]: Without dead ends: 383 [2022-03-03 19:14:05,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:05,665 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 63 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 64 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-03 19:14:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 265. [2022-03-03 19:14:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.992424242424242) internal successors, (790), 264 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 790 transitions. [2022-03-03 19:14:05,669 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 790 transitions. Word has length 19 [2022-03-03 19:14:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,669 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 790 transitions. [2022-03-03 19:14:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 790 transitions. [2022-03-03 19:14:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-03-03 19:14:05,669 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1395726940, now seen corresponding path program 44 times [2022-03-03 19:14:05,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152051530] [2022-03-03 19:14:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152051530] [2022-03-03 19:14:05,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152051530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983569141] [2022-03-03 19:14:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,724 INFO L87 Difference]: Start difference. First operand 265 states and 790 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,814 INFO L93 Difference]: Finished difference Result 430 states and 1198 transitions. [2022-03-03 19:14:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,815 INFO L225 Difference]: With dead ends: 430 [2022-03-03 19:14:05,815 INFO L226 Difference]: Without dead ends: 424 [2022-03-03 19:14:05,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:05,815 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 92 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 50 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-03-03 19:14:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 275. [2022-03-03 19:14:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.9744525547445257) internal successors, (815), 274 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 815 transitions. [2022-03-03 19:14:05,825 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 815 transitions. Word has length 19 [2022-03-03 19:14:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,826 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 815 transitions. [2022-03-03 19:14:05,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 815 transitions. [2022-03-03 19:14:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,826 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-03-03 19:14:05,826 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -468881226, now seen corresponding path program 45 times [2022-03-03 19:14:05,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647836974] [2022-03-03 19:14:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:05,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647836974] [2022-03-03 19:14:05,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647836974] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:05,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:05,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:05,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586005729] [2022-03-03 19:14:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:05,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:05,871 INFO L87 Difference]: Start difference. First operand 275 states and 815 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,981 INFO L93 Difference]: Finished difference Result 394 states and 1115 transitions. [2022-03-03 19:14:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:05,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,982 INFO L225 Difference]: With dead ends: 394 [2022-03-03 19:14:05,982 INFO L226 Difference]: Without dead ends: 379 [2022-03-03 19:14:05,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:05,982 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 48 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-03 19:14:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 261. [2022-03-03 19:14:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.0) internal successors, (780), 260 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 780 transitions. [2022-03-03 19:14:05,986 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 780 transitions. Word has length 19 [2022-03-03 19:14:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,986 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 780 transitions. [2022-03-03 19:14:05,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 780 transitions. [2022-03-03 19:14:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:05,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-03-03 19:14:05,987 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash 248647576, now seen corresponding path program 46 times [2022-03-03 19:14:05,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617118215] [2022-03-03 19:14:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:06,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617118215] [2022-03-03 19:14:06,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617118215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:06,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:06,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:06,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899217716] [2022-03-03 19:14:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:06,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:06,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:06,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:06,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:06,015 INFO L87 Difference]: Start difference. First operand 261 states and 780 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:06,104 INFO L93 Difference]: Finished difference Result 393 states and 1118 transitions. [2022-03-03 19:14:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:06,105 INFO L225 Difference]: With dead ends: 393 [2022-03-03 19:14:06,105 INFO L226 Difference]: Without dead ends: 381 [2022-03-03 19:14:06,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:06,105 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:06,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 51 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-03-03 19:14:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 263. [2022-03-03 19:14:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 2.9885496183206106) internal successors, (783), 262 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 783 transitions. [2022-03-03 19:14:06,109 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 783 transitions. Word has length 19 [2022-03-03 19:14:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:06,109 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 783 transitions. [2022-03-03 19:14:06,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,109 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 783 transitions. [2022-03-03 19:14:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:06,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:06,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:06,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-03-03 19:14:06,110 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1696416684, now seen corresponding path program 47 times [2022-03-03 19:14:06,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:06,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849821353] [2022-03-03 19:14:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:06,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849821353] [2022-03-03 19:14:06,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849821353] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:06,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:06,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:06,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340096066] [2022-03-03 19:14:06,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:06,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:06,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:06,145 INFO L87 Difference]: Start difference. First operand 263 states and 783 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:06,227 INFO L93 Difference]: Finished difference Result 381 states and 1080 transitions. [2022-03-03 19:14:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:06,228 INFO L225 Difference]: With dead ends: 381 [2022-03-03 19:14:06,228 INFO L226 Difference]: Without dead ends: 375 [2022-03-03 19:14:06,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:06,228 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:06,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 51 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-03 19:14:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 273. [2022-03-03 19:14:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.9705882352941178) internal successors, (808), 272 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 808 transitions. [2022-03-03 19:14:06,232 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 808 transitions. Word has length 19 [2022-03-03 19:14:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:06,232 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 808 transitions. [2022-03-03 19:14:06,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 808 transitions. [2022-03-03 19:14:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:06,232 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:06,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:06,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-03-03 19:14:06,233 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1671704898, now seen corresponding path program 48 times [2022-03-03 19:14:06,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:06,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235695426] [2022-03-03 19:14:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:06,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:06,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235695426] [2022-03-03 19:14:06,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235695426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:06,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:06,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:06,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661414782] [2022-03-03 19:14:06,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:06,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:06,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:06,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:06,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:06,280 INFO L87 Difference]: Start difference. First operand 273 states and 808 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:06,339 INFO L93 Difference]: Finished difference Result 345 states and 997 transitions. [2022-03-03 19:14:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:06,340 INFO L225 Difference]: With dead ends: 345 [2022-03-03 19:14:06,340 INFO L226 Difference]: Without dead ends: 328 [2022-03-03 19:14:06,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:06,340 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:06,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 51 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-03 19:14:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 257. [2022-03-03 19:14:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 3.015625) internal successors, (772), 256 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 772 transitions. [2022-03-03 19:14:06,344 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 772 transitions. Word has length 19 [2022-03-03 19:14:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:06,344 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 772 transitions. [2022-03-03 19:14:06,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 772 transitions. [2022-03-03 19:14:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:06,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:06,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:06,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-03-03 19:14:06,344 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash 677320894, now seen corresponding path program 43 times [2022-03-03 19:14:06,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:06,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642122908] [2022-03-03 19:14:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:06,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642122908] [2022-03-03 19:14:06,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642122908] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:06,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443508902] [2022-03-03 19:14:06,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:06,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:06,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:06,371 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:06,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-03 19:14:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:06,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443508902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:06,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:06,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:14:06,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143590584] [2022-03-03 19:14:06,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:06,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:14:06,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:14:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:14:06,471 INFO L87 Difference]: Start difference. First operand 257 states and 772 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:06,537 INFO L93 Difference]: Finished difference Result 449 states and 1320 transitions. [2022-03-03 19:14:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:06,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:06,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:06,538 INFO L225 Difference]: With dead ends: 449 [2022-03-03 19:14:06,538 INFO L226 Difference]: Without dead ends: 449 [2022-03-03 19:14:06,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:06,539 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:06,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 51 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-03 19:14:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 235. [2022-03-03 19:14:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.0213675213675213) internal successors, (707), 234 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 707 transitions. [2022-03-03 19:14:06,542 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 707 transitions. Word has length 19 [2022-03-03 19:14:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:06,542 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 707 transitions. [2022-03-03 19:14:06,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 707 transitions. [2022-03-03 19:14:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:06,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:06,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:06,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-03-03 19:14:06,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2022-03-03 19:14:06,759 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1398973592, now seen corresponding path program 44 times [2022-03-03 19:14:06,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:06,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456520969] [2022-03-03 19:14:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:06,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:06,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456520969] [2022-03-03 19:14:06,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456520969] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:06,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635735736] [2022-03-03 19:14:06,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:06,804 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:06,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-03 19:14:06,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:06,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:06,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:06,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635735736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:06,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:06,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:06,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796866705] [2022-03-03 19:14:06,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:06,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:06,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:06,935 INFO L87 Difference]: Start difference. First operand 235 states and 707 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:07,051 INFO L93 Difference]: Finished difference Result 437 states and 1251 transitions. [2022-03-03 19:14:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:07,052 INFO L225 Difference]: With dead ends: 437 [2022-03-03 19:14:07,052 INFO L226 Difference]: Without dead ends: 431 [2022-03-03 19:14:07,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:07,052 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:07,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 88 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-03 19:14:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 241. [2022-03-03 19:14:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.004166666666667) internal successors, (721), 240 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 721 transitions. [2022-03-03 19:14:07,056 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 721 transitions. Word has length 19 [2022-03-03 19:14:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:07,057 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 721 transitions. [2022-03-03 19:14:07,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 721 transitions. [2022-03-03 19:14:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:07,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:07,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:07,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-03-03 19:14:07,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2022-03-03 19:14:07,271 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1991166676, now seen corresponding path program 45 times [2022-03-03 19:14:07,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:07,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087143327] [2022-03-03 19:14:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:07,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:07,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087143327] [2022-03-03 19:14:07,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087143327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:07,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985623197] [2022-03-03 19:14:07,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:07,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:07,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:07,307 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:07,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-03 19:14:07,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:07,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:07,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:07,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:07,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:07,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985623197] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:07,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:07,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:07,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102795117] [2022-03-03 19:14:07,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:07,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:07,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:07,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:07,404 INFO L87 Difference]: Start difference. First operand 241 states and 721 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:07,482 INFO L93 Difference]: Finished difference Result 415 states and 1214 transitions. [2022-03-03 19:14:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:07,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:07,483 INFO L225 Difference]: With dead ends: 415 [2022-03-03 19:14:07,484 INFO L226 Difference]: Without dead ends: 415 [2022-03-03 19:14:07,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:07,484 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:07,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 62 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-03 19:14:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 214. [2022-03-03 19:14:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0) internal successors, (639), 213 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 639 transitions. [2022-03-03 19:14:07,487 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 639 transitions. Word has length 19 [2022-03-03 19:14:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:07,487 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 639 transitions. [2022-03-03 19:14:07,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 639 transitions. [2022-03-03 19:14:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:07,488 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:07,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:07,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-03-03 19:14:07,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:07,704 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2128879946, now seen corresponding path program 46 times [2022-03-03 19:14:07,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:07,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161932474] [2022-03-03 19:14:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:07,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:07,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:07,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161932474] [2022-03-03 19:14:07,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161932474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:07,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795179693] [2022-03-03 19:14:07,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:07,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:07,733 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:07,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-03 19:14:07,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:07,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:07,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:07,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:07,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:07,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795179693] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:07,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:07,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:07,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226053881] [2022-03-03 19:14:07,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:07,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:07,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:07,860 INFO L87 Difference]: Start difference. First operand 214 states and 639 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:07,965 INFO L93 Difference]: Finished difference Result 367 states and 1064 transitions. [2022-03-03 19:14:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:07,966 INFO L225 Difference]: With dead ends: 367 [2022-03-03 19:14:07,966 INFO L226 Difference]: Without dead ends: 355 [2022-03-03 19:14:07,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:07,966 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:07,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 66 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-03 19:14:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 217. [2022-03-03 19:14:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0) internal successors, (648), 216 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 648 transitions. [2022-03-03 19:14:07,969 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 648 transitions. Word has length 19 [2022-03-03 19:14:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:07,969 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 648 transitions. [2022-03-03 19:14:07,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 648 transitions. [2022-03-03 19:14:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:07,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:07,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:07,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:08,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:08,179 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 956461618, now seen corresponding path program 47 times [2022-03-03 19:14:08,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:08,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423559880] [2022-03-03 19:14:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:08,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423559880] [2022-03-03 19:14:08,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423559880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:08,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971767882] [2022-03-03 19:14:08,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:08,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:08,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:08,214 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:08,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-03 19:14:08,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:08,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:08,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:08,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971767882] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:08,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:08,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:08,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122191075] [2022-03-03 19:14:08,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:08,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:08,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:08,361 INFO L87 Difference]: Start difference. First operand 217 states and 648 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:08,492 INFO L93 Difference]: Finished difference Result 355 states and 1025 transitions. [2022-03-03 19:14:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:08,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:08,493 INFO L225 Difference]: With dead ends: 355 [2022-03-03 19:14:08,493 INFO L226 Difference]: Without dead ends: 349 [2022-03-03 19:14:08,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:08,493 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:08,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 91 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-03-03 19:14:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 229. [2022-03-03 19:14:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 3.013157894736842) internal successors, (687), 228 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 687 transitions. [2022-03-03 19:14:08,496 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 687 transitions. Word has length 19 [2022-03-03 19:14:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:08,496 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 687 transitions. [2022-03-03 19:14:08,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 687 transitions. [2022-03-03 19:14:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:08,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:08,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:08,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:08,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:08,697 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash 364268534, now seen corresponding path program 48 times [2022-03-03 19:14:08,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:08,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725137744] [2022-03-03 19:14:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:08,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:08,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725137744] [2022-03-03 19:14:08,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725137744] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:08,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220818301] [2022-03-03 19:14:08,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:08,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:08,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:08,740 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:08,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-03 19:14:08,763 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:08,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:08,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220818301] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:08,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:08,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:08,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251162594] [2022-03-03 19:14:08,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:08,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:08,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:08,887 INFO L87 Difference]: Start difference. First operand 229 states and 687 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:09,022 INFO L93 Difference]: Finished difference Result 320 states and 940 transitions. [2022-03-03 19:14:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:09,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:09,023 INFO L225 Difference]: With dead ends: 320 [2022-03-03 19:14:09,023 INFO L226 Difference]: Without dead ends: 320 [2022-03-03 19:14:09,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:09,024 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:09,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 90 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-03-03 19:14:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 215. [2022-03-03 19:14:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0046728971962615) internal successors, (643), 214 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 643 transitions. [2022-03-03 19:14:09,026 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 643 transitions. Word has length 19 [2022-03-03 19:14:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:09,026 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 643 transitions. [2022-03-03 19:14:09,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 643 transitions. [2022-03-03 19:14:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:09,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:09,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:09,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:09,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:09,227 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash 334779126, now seen corresponding path program 49 times [2022-03-03 19:14:09,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:09,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92959275] [2022-03-03 19:14:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:09,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92959275] [2022-03-03 19:14:09,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92959275] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:09,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025702212] [2022-03-03 19:14:09,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:09,275 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:09,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-03-03 19:14:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:09,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:09,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025702212] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:09,480 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:09,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:09,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866703770] [2022-03-03 19:14:09,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:09,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:09,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:09,481 INFO L87 Difference]: Start difference. First operand 215 states and 643 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:09,588 INFO L93 Difference]: Finished difference Result 450 states and 1301 transitions. [2022-03-03 19:14:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:09,589 INFO L225 Difference]: With dead ends: 450 [2022-03-03 19:14:09,589 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 19:14:09,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:09,590 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:09,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 68 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 19:14:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 222. [2022-03-03 19:14:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.0407239819004523) internal successors, (672), 221 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 672 transitions. [2022-03-03 19:14:09,593 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 672 transitions. Word has length 19 [2022-03-03 19:14:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:09,593 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 672 transitions. [2022-03-03 19:14:09,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 672 transitions. [2022-03-03 19:14:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:09,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:09,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:09,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:09,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable307 [2022-03-03 19:14:09,794 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash 173559186, now seen corresponding path program 50 times [2022-03-03 19:14:09,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:09,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136792023] [2022-03-03 19:14:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:09,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:09,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136792023] [2022-03-03 19:14:09,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136792023] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:09,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46932948] [2022-03-03 19:14:09,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:09,837 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:09,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-03-03 19:14:09,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:09,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:09,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:09,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46932948] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:09,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:09,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:09,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373216323] [2022-03-03 19:14:09,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:09,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:09,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:09,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:09,992 INFO L87 Difference]: Start difference. First operand 222 states and 672 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:10,107 INFO L93 Difference]: Finished difference Result 456 states and 1310 transitions. [2022-03-03 19:14:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:10,109 INFO L225 Difference]: With dead ends: 456 [2022-03-03 19:14:10,109 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 19:14:10,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:10,109 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:10,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 92 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 19:14:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 219. [2022-03-03 19:14:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0275229357798166) internal successors, (660), 218 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 660 transitions. [2022-03-03 19:14:10,112 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 660 transitions. Word has length 19 [2022-03-03 19:14:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:10,112 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 660 transitions. [2022-03-03 19:14:10,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 660 transitions. [2022-03-03 19:14:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:10,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:10,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:10,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-03-03 19:14:10,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:10,319 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1855396096, now seen corresponding path program 51 times [2022-03-03 19:14:10,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:10,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469810410] [2022-03-03 19:14:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:10,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:10,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469810410] [2022-03-03 19:14:10,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469810410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:10,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10554190] [2022-03-03 19:14:10,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:10,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:10,360 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:10,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-03-03 19:14:10,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:10,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:10,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:10,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:10,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:10,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10554190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:10,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:10,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:10,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942757745] [2022-03-03 19:14:10,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:10,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:10,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:10,477 INFO L87 Difference]: Start difference. First operand 219 states and 660 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:10,553 INFO L93 Difference]: Finished difference Result 447 states and 1277 transitions. [2022-03-03 19:14:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:10,554 INFO L225 Difference]: With dead ends: 447 [2022-03-03 19:14:10,554 INFO L226 Difference]: Without dead ends: 435 [2022-03-03 19:14:10,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:10,554 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:10,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 89 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-03-03 19:14:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 217. [2022-03-03 19:14:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0185185185185186) internal successors, (652), 216 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 652 transitions. [2022-03-03 19:14:10,557 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 652 transitions. Word has length 19 [2022-03-03 19:14:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:10,558 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 652 transitions. [2022-03-03 19:14:10,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 652 transitions. [2022-03-03 19:14:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:10,558 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:10,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:10,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:10,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2022-03-03 19:14:10,769 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 892713506, now seen corresponding path program 49 times [2022-03-03 19:14:10,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:10,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767448339] [2022-03-03 19:14:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:10,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:10,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:10,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767448339] [2022-03-03 19:14:10,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767448339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:10,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:10,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:10,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435175753] [2022-03-03 19:14:10,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:10,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:10,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:10,804 INFO L87 Difference]: Start difference. First operand 217 states and 652 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:10,937 INFO L93 Difference]: Finished difference Result 362 states and 1035 transitions. [2022-03-03 19:14:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:10,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:10,938 INFO L225 Difference]: With dead ends: 362 [2022-03-03 19:14:10,938 INFO L226 Difference]: Without dead ends: 354 [2022-03-03 19:14:10,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:10,938 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:10,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 61 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-03 19:14:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 234. [2022-03-03 19:14:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.0) internal successors, (699), 233 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 699 transitions. [2022-03-03 19:14:10,941 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 699 transitions. Word has length 19 [2022-03-03 19:14:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:10,941 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 699 transitions. [2022-03-03 19:14:10,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 699 transitions. [2022-03-03 19:14:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:10,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:10,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:10,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-03-03 19:14:10,942 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:10,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1800374918, now seen corresponding path program 50 times [2022-03-03 19:14:10,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:10,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586507863] [2022-03-03 19:14:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:10,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:10,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586507863] [2022-03-03 19:14:10,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586507863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:10,979 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:10,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:10,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736815604] [2022-03-03 19:14:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:10,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:10,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:10,980 INFO L87 Difference]: Start difference. First operand 234 states and 699 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:11,115 INFO L93 Difference]: Finished difference Result 360 states and 1030 transitions. [2022-03-03 19:14:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:11,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:11,116 INFO L225 Difference]: With dead ends: 360 [2022-03-03 19:14:11,116 INFO L226 Difference]: Without dead ends: 352 [2022-03-03 19:14:11,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:11,117 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:11,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 60 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:11,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-03-03 19:14:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 232. [2022-03-03 19:14:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.9956709956709955) internal successors, (692), 231 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 692 transitions. [2022-03-03 19:14:11,119 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 692 transitions. Word has length 19 [2022-03-03 19:14:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:11,120 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 692 transitions. [2022-03-03 19:14:11,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 692 transitions. [2022-03-03 19:14:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:11,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:11,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-03-03 19:14:11,120 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 28778358, now seen corresponding path program 51 times [2022-03-03 19:14:11,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:11,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285027185] [2022-03-03 19:14:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:11,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:11,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:11,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285027185] [2022-03-03 19:14:11,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285027185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:11,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:11,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:11,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605739922] [2022-03-03 19:14:11,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:11,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:11,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:11,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:11,153 INFO L87 Difference]: Start difference. First operand 232 states and 692 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:11,267 INFO L93 Difference]: Finished difference Result 374 states and 1071 transitions. [2022-03-03 19:14:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:11,268 INFO L225 Difference]: With dead ends: 374 [2022-03-03 19:14:11,268 INFO L226 Difference]: Without dead ends: 360 [2022-03-03 19:14:11,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:11,268 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:11,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-03-03 19:14:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 230. [2022-03-03 19:14:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.995633187772926) internal successors, (686), 229 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 686 transitions. [2022-03-03 19:14:11,271 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 686 transitions. Word has length 19 [2022-03-03 19:14:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:11,271 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 686 transitions. [2022-03-03 19:14:11,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 686 transitions. [2022-03-03 19:14:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:11,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:11,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:11,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-03-03 19:14:11,272 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash 71488010, now seen corresponding path program 52 times [2022-03-03 19:14:11,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:11,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661889135] [2022-03-03 19:14:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:11,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:11,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:11,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661889135] [2022-03-03 19:14:11,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661889135] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:11,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008936814] [2022-03-03 19:14:11,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:11,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:11,318 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:11,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-03-03 19:14:11,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:11,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:11,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:11,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:11,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008936814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:11,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:11,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:11,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526463572] [2022-03-03 19:14:11,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:11,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:11,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:11,535 INFO L87 Difference]: Start difference. First operand 230 states and 686 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:11,637 INFO L93 Difference]: Finished difference Result 520 states and 1485 transitions. [2022-03-03 19:14:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:11,638 INFO L225 Difference]: With dead ends: 520 [2022-03-03 19:14:11,638 INFO L226 Difference]: Without dead ends: 520 [2022-03-03 19:14:11,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:11,638 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:11,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 81 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-03-03 19:14:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 238. [2022-03-03 19:14:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.0548523206751055) internal successors, (724), 237 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 724 transitions. [2022-03-03 19:14:11,641 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 724 transitions. Word has length 19 [2022-03-03 19:14:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:11,642 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 724 transitions. [2022-03-03 19:14:11,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 724 transitions. [2022-03-03 19:14:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:11,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:11,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:11,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:11,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2022-03-03 19:14:11,855 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash -89731930, now seen corresponding path program 53 times [2022-03-03 19:14:11,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:11,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062400986] [2022-03-03 19:14:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:11,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:11,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062400986] [2022-03-03 19:14:11,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062400986] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:11,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967607489] [2022-03-03 19:14:11,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:11,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:11,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:11,890 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:11,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-03-03 19:14:11,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:11,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:11,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967607489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:12,084 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:12,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:12,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972359956] [2022-03-03 19:14:12,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:12,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:12,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:12,085 INFO L87 Difference]: Start difference. First operand 238 states and 724 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:12,204 INFO L93 Difference]: Finished difference Result 502 states and 1416 transitions. [2022-03-03 19:14:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:12,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:12,205 INFO L225 Difference]: With dead ends: 502 [2022-03-03 19:14:12,205 INFO L226 Difference]: Without dead ends: 496 [2022-03-03 19:14:12,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:12,205 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 119 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:12,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 98 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-03-03 19:14:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 241. [2022-03-03 19:14:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.029166666666667) internal successors, (727), 240 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 727 transitions. [2022-03-03 19:14:12,208 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 727 transitions. Word has length 19 [2022-03-03 19:14:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:12,209 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 727 transitions. [2022-03-03 19:14:12,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 727 transitions. [2022-03-03 19:14:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:12,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:12,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:12,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:12,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable314 [2022-03-03 19:14:12,425 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:12,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:12,425 INFO L85 PathProgramCache]: Analyzing trace with hash -291855066, now seen corresponding path program 52 times [2022-03-03 19:14:12,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:12,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112306614] [2022-03-03 19:14:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:12,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112306614] [2022-03-03 19:14:12,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112306614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:12,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:12,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:12,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499087896] [2022-03-03 19:14:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:12,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:12,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:12,458 INFO L87 Difference]: Start difference. First operand 241 states and 727 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:12,558 INFO L93 Difference]: Finished difference Result 412 states and 1155 transitions. [2022-03-03 19:14:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:12,559 INFO L225 Difference]: With dead ends: 412 [2022-03-03 19:14:12,559 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:14:12,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:12,559 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:12,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 55 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:14:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 251. [2022-03-03 19:14:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 3.048) internal successors, (762), 250 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 762 transitions. [2022-03-03 19:14:12,562 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 762 transitions. Word has length 19 [2022-03-03 19:14:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:12,562 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 762 transitions. [2022-03-03 19:14:12,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 762 transitions. [2022-03-03 19:14:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:12,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:12,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:12,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-03-03 19:14:12,563 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash 615806346, now seen corresponding path program 53 times [2022-03-03 19:14:12,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:12,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830279993] [2022-03-03 19:14:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:12,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830279993] [2022-03-03 19:14:12,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830279993] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:12,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:12,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:12,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174594616] [2022-03-03 19:14:12,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:12,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:12,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:12,595 INFO L87 Difference]: Start difference. First operand 251 states and 762 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:12,700 INFO L93 Difference]: Finished difference Result 418 states and 1170 transitions. [2022-03-03 19:14:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:12,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:12,701 INFO L225 Difference]: With dead ends: 418 [2022-03-03 19:14:12,701 INFO L226 Difference]: Without dead ends: 410 [2022-03-03 19:14:12,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:12,701 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:12,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 57 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-03 19:14:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2022-03-03 19:14:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 3.056451612903226) internal successors, (758), 248 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 758 transitions. [2022-03-03 19:14:12,705 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 758 transitions. Word has length 19 [2022-03-03 19:14:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:12,705 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 758 transitions. [2022-03-03 19:14:12,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 758 transitions. [2022-03-03 19:14:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:12,705 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:12,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:12,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-03-03 19:14:12,705 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1711988892, now seen corresponding path program 54 times [2022-03-03 19:14:12,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:12,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912134292] [2022-03-03 19:14:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:12,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912134292] [2022-03-03 19:14:12,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912134292] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:12,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018345583] [2022-03-03 19:14:12,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:12,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:12,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:12,750 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:12,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-03-03 19:14:12,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:14:12,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:12,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:12,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018345583] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:12,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:12,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:12,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923958942] [2022-03-03 19:14:12,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:12,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:12,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:12,979 INFO L87 Difference]: Start difference. First operand 249 states and 758 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:13,111 INFO L93 Difference]: Finished difference Result 466 states and 1335 transitions. [2022-03-03 19:14:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:13,112 INFO L225 Difference]: With dead ends: 466 [2022-03-03 19:14:13,112 INFO L226 Difference]: Without dead ends: 466 [2022-03-03 19:14:13,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:13,113 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:13,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 113 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-03-03 19:14:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 247. [2022-03-03 19:14:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.048780487804878) internal successors, (750), 246 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 750 transitions. [2022-03-03 19:14:13,116 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 750 transitions. Word has length 19 [2022-03-03 19:14:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:13,116 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 750 transitions. [2022-03-03 19:14:13,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 750 transitions. [2022-03-03 19:14:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:13,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:13,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:13,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:13,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable317 [2022-03-03 19:14:13,320 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1409631458, now seen corresponding path program 54 times [2022-03-03 19:14:13,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:13,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255339777] [2022-03-03 19:14:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:13,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:13,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255339777] [2022-03-03 19:14:13,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255339777] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:13,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374434192] [2022-03-03 19:14:13,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:13,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:13,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:13,366 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:13,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-03-03 19:14:13,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:13,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:13,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:13,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:13,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:13,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374434192] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:13,481 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:13,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:13,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573732653] [2022-03-03 19:14:13,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:13,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:13,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:13,481 INFO L87 Difference]: Start difference. First operand 247 states and 750 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:13,564 INFO L93 Difference]: Finished difference Result 366 states and 1036 transitions. [2022-03-03 19:14:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:13,565 INFO L225 Difference]: With dead ends: 366 [2022-03-03 19:14:13,565 INFO L226 Difference]: Without dead ends: 358 [2022-03-03 19:14:13,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:13,565 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 88 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:13,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 93 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-03-03 19:14:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 240. [2022-03-03 19:14:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.0585774058577404) internal successors, (731), 239 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 731 transitions. [2022-03-03 19:14:13,568 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 731 transitions. Word has length 19 [2022-03-03 19:14:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:13,568 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 731 transitions. [2022-03-03 19:14:13,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 731 transitions. [2022-03-03 19:14:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:13,569 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:13,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:13,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:13,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:13,785 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1518215104, now seen corresponding path program 55 times [2022-03-03 19:14:13,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:13,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967457647] [2022-03-03 19:14:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:13,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:13,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967457647] [2022-03-03 19:14:13,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967457647] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:13,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598517666] [2022-03-03 19:14:13,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:13,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:13,816 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:13,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-03-03 19:14:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:13,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:13,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:13,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:13,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598517666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:13,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:13,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:13,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696569498] [2022-03-03 19:14:13,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:13,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:13,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:13,950 INFO L87 Difference]: Start difference. First operand 240 states and 731 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:14,033 INFO L93 Difference]: Finished difference Result 414 states and 1188 transitions. [2022-03-03 19:14:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:14,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:14,034 INFO L225 Difference]: With dead ends: 414 [2022-03-03 19:14:14,034 INFO L226 Difference]: Without dead ends: 405 [2022-03-03 19:14:14,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:14,035 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:14,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 108 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-03-03 19:14:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 240. [2022-03-03 19:14:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.0418410041841004) internal successors, (727), 239 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 727 transitions. [2022-03-03 19:14:14,038 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 727 transitions. Word has length 19 [2022-03-03 19:14:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:14,038 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 727 transitions. [2022-03-03 19:14:14,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 727 transitions. [2022-03-03 19:14:14,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:14,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:14,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:14,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:14,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:14,254 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 822584098, now seen corresponding path program 55 times [2022-03-03 19:14:14,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:14,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190780999] [2022-03-03 19:14:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:14,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:14,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190780999] [2022-03-03 19:14:14,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190780999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:14,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016904149] [2022-03-03 19:14:14,283 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:14,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:14,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:14,284 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:14,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-03-03 19:14:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:14,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:14,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:14,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:14,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016904149] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:14,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:14,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:14,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331355521] [2022-03-03 19:14:14,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:14,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:14,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:14,416 INFO L87 Difference]: Start difference. First operand 240 states and 727 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:14,485 INFO L93 Difference]: Finished difference Result 347 states and 1016 transitions. [2022-03-03 19:14:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:14,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:14,486 INFO L225 Difference]: With dead ends: 347 [2022-03-03 19:14:14,486 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:14:14,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:14,486 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:14,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 67 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:14:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 236. [2022-03-03 19:14:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.0425531914893615) internal successors, (715), 235 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 715 transitions. [2022-03-03 19:14:14,489 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 715 transitions. Word has length 19 [2022-03-03 19:14:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:14,489 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 715 transitions. [2022-03-03 19:14:14,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 715 transitions. [2022-03-03 19:14:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:14,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:14,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:14,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:14,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable320 [2022-03-03 19:14:14,705 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1163210944, now seen corresponding path program 56 times [2022-03-03 19:14:14,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:14,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077073501] [2022-03-03 19:14:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:14,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:14,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:14,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077073501] [2022-03-03 19:14:14,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077073501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:14,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:14,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:14,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263603358] [2022-03-03 19:14:14,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:14,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:14,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:14,735 INFO L87 Difference]: Start difference. First operand 236 states and 715 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:14,794 INFO L93 Difference]: Finished difference Result 452 states and 1270 transitions. [2022-03-03 19:14:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:14,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:14,795 INFO L225 Difference]: With dead ends: 452 [2022-03-03 19:14:14,795 INFO L226 Difference]: Without dead ends: 446 [2022-03-03 19:14:14,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:14,796 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:14,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 56 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-03-03 19:14:14,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 246. [2022-03-03 19:14:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.020408163265306) internal successors, (740), 245 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 740 transitions. [2022-03-03 19:14:14,803 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 740 transitions. Word has length 19 [2022-03-03 19:14:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:14,803 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 740 transitions. [2022-03-03 19:14:14,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 740 transitions. [2022-03-03 19:14:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:14,804 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:14,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:14,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-03-03 19:14:14,804 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash -169342994, now seen corresponding path program 57 times [2022-03-03 19:14:14,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:14,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310956321] [2022-03-03 19:14:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:14,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:14,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:14,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310956321] [2022-03-03 19:14:14,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310956321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:14,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:14,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:14,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417870337] [2022-03-03 19:14:14,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:14,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:14,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:14,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:14,830 INFO L87 Difference]: Start difference. First operand 246 states and 740 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:14,899 INFO L93 Difference]: Finished difference Result 416 states and 1187 transitions. [2022-03-03 19:14:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:14,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:14,899 INFO L225 Difference]: With dead ends: 416 [2022-03-03 19:14:14,900 INFO L226 Difference]: Without dead ends: 405 [2022-03-03 19:14:14,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:14,900 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:14,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:14,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-03-03 19:14:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 236. [2022-03-03 19:14:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.0382978723404257) internal successors, (714), 235 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 714 transitions. [2022-03-03 19:14:14,903 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 714 transitions. Word has length 19 [2022-03-03 19:14:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:14,903 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 714 transitions. [2022-03-03 19:14:14,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 714 transitions. [2022-03-03 19:14:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:14,903 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:14,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:14,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-03-03 19:14:14,903 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1245100038, now seen corresponding path program 56 times [2022-03-03 19:14:14,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:14,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317296165] [2022-03-03 19:14:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:14,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:14,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317296165] [2022-03-03 19:14:14,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317296165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:14,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:14,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:14,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500920547] [2022-03-03 19:14:14,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:14,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:14,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:14,937 INFO L87 Difference]: Start difference. First operand 236 states and 714 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,048 INFO L93 Difference]: Finished difference Result 388 states and 1108 transitions. [2022-03-03 19:14:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,049 INFO L225 Difference]: With dead ends: 388 [2022-03-03 19:14:15,049 INFO L226 Difference]: Without dead ends: 382 [2022-03-03 19:14:15,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:15,049 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 68 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:15,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-03-03 19:14:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 248. [2022-03-03 19:14:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0404858299595143) internal successors, (751), 247 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 751 transitions. [2022-03-03 19:14:15,053 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 751 transitions. Word has length 19 [2022-03-03 19:14:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,053 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 751 transitions. [2022-03-03 19:14:15,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 751 transitions. [2022-03-03 19:14:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-03-03 19:14:15,053 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -916770614, now seen corresponding path program 57 times [2022-03-03 19:14:15,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799953424] [2022-03-03 19:14:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799953424] [2022-03-03 19:14:15,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799953424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,102 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548824836] [2022-03-03 19:14:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,103 INFO L87 Difference]: Start difference. First operand 248 states and 751 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,230 INFO L93 Difference]: Finished difference Result 366 states and 1071 transitions. [2022-03-03 19:14:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,231 INFO L225 Difference]: With dead ends: 366 [2022-03-03 19:14:15,231 INFO L226 Difference]: Without dead ends: 366 [2022-03-03 19:14:15,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:15,231 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-03-03 19:14:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 235. [2022-03-03 19:14:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.0384615384615383) internal successors, (711), 234 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 711 transitions. [2022-03-03 19:14:15,234 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 711 transitions. Word has length 19 [2022-03-03 19:14:15,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,234 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 711 transitions. [2022-03-03 19:14:15,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 711 transitions. [2022-03-03 19:14:15,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-03-03 19:14:15,235 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2041919526, now seen corresponding path program 58 times [2022-03-03 19:14:15,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807192161] [2022-03-03 19:14:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807192161] [2022-03-03 19:14:15,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807192161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860666865] [2022-03-03 19:14:15,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,262 INFO L87 Difference]: Start difference. First operand 235 states and 711 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,326 INFO L93 Difference]: Finished difference Result 391 states and 1119 transitions. [2022-03-03 19:14:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,327 INFO L225 Difference]: With dead ends: 391 [2022-03-03 19:14:15,327 INFO L226 Difference]: Without dead ends: 379 [2022-03-03 19:14:15,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:15,327 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 54 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-03 19:14:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 237. [2022-03-03 19:14:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 3.0254237288135593) internal successors, (714), 236 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 714 transitions. [2022-03-03 19:14:15,332 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 714 transitions. Word has length 19 [2022-03-03 19:14:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,332 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 714 transitions. [2022-03-03 19:14:15,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 714 transitions. [2022-03-03 19:14:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-03-03 19:14:15,333 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash -321878382, now seen corresponding path program 59 times [2022-03-03 19:14:15,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021504596] [2022-03-03 19:14:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021504596] [2022-03-03 19:14:15,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021504596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222253279] [2022-03-03 19:14:15,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,362 INFO L87 Difference]: Start difference. First operand 237 states and 714 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,435 INFO L93 Difference]: Finished difference Result 379 states and 1081 transitions. [2022-03-03 19:14:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,436 INFO L225 Difference]: With dead ends: 379 [2022-03-03 19:14:15,436 INFO L226 Difference]: Without dead ends: 373 [2022-03-03 19:14:15,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:15,436 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 68 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-03-03 19:14:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 247. [2022-03-03 19:14:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.0040650406504064) internal successors, (739), 246 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 739 transitions. [2022-03-03 19:14:15,440 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 739 transitions. Word has length 19 [2022-03-03 19:14:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,440 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 739 transitions. [2022-03-03 19:14:15,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 739 transitions. [2022-03-03 19:14:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-03-03 19:14:15,440 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1654432320, now seen corresponding path program 60 times [2022-03-03 19:14:15,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181515123] [2022-03-03 19:14:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181515123] [2022-03-03 19:14:15,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181515123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,467 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963816773] [2022-03-03 19:14:15,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,468 INFO L87 Difference]: Start difference. First operand 247 states and 739 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,525 INFO L93 Difference]: Finished difference Result 343 states and 998 transitions. [2022-03-03 19:14:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,525 INFO L225 Difference]: With dead ends: 343 [2022-03-03 19:14:15,526 INFO L226 Difference]: Without dead ends: 330 [2022-03-03 19:14:15,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:15,526 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 50 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-03 19:14:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 235. [2022-03-03 19:14:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.034188034188034) internal successors, (710), 234 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 710 transitions. [2022-03-03 19:14:15,529 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 710 transitions. Word has length 19 [2022-03-03 19:14:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,529 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 710 transitions. [2022-03-03 19:14:15,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 710 transitions. [2022-03-03 19:14:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,529 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-03-03 19:14:15,529 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1937953670, now seen corresponding path program 58 times [2022-03-03 19:14:15,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727025449] [2022-03-03 19:14:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727025449] [2022-03-03 19:14:15,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727025449] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433348876] [2022-03-03 19:14:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,554 INFO L87 Difference]: Start difference. First operand 235 states and 710 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,645 INFO L93 Difference]: Finished difference Result 325 states and 939 transitions. [2022-03-03 19:14:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,646 INFO L225 Difference]: With dead ends: 325 [2022-03-03 19:14:15,646 INFO L226 Difference]: Without dead ends: 313 [2022-03-03 19:14:15,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:15,646 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 59 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-03 19:14:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 235. [2022-03-03 19:14:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.02991452991453) internal successors, (709), 234 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 709 transitions. [2022-03-03 19:14:15,650 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 709 transitions. Word has length 19 [2022-03-03 19:14:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,650 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 709 transitions. [2022-03-03 19:14:15,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 709 transitions. [2022-03-03 19:14:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-03-03 19:14:15,651 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash -452144906, now seen corresponding path program 59 times [2022-03-03 19:14:15,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081972376] [2022-03-03 19:14:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081972376] [2022-03-03 19:14:15,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081972376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107868295] [2022-03-03 19:14:15,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,682 INFO L87 Difference]: Start difference. First operand 235 states and 709 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,776 INFO L93 Difference]: Finished difference Result 329 states and 951 transitions. [2022-03-03 19:14:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,777 INFO L225 Difference]: With dead ends: 329 [2022-03-03 19:14:15,777 INFO L226 Difference]: Without dead ends: 323 [2022-03-03 19:14:15,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:15,777 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 58 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-03-03 19:14:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 241. [2022-03-03 19:14:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.0125) internal successors, (723), 240 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 723 transitions. [2022-03-03 19:14:15,780 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 723 transitions. Word has length 19 [2022-03-03 19:14:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,780 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 723 transitions. [2022-03-03 19:14:15,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 723 transitions. [2022-03-03 19:14:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-03-03 19:14:15,780 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1680951738, now seen corresponding path program 60 times [2022-03-03 19:14:15,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724850648] [2022-03-03 19:14:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724850648] [2022-03-03 19:14:15,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724850648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:15,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:15,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:15,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187784885] [2022-03-03 19:14:15,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:15,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:15,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:15,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:15,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:15,814 INFO L87 Difference]: Start difference. First operand 241 states and 723 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:15,915 INFO L93 Difference]: Finished difference Result 294 states and 876 transitions. [2022-03-03 19:14:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:15,916 INFO L225 Difference]: With dead ends: 294 [2022-03-03 19:14:15,916 INFO L226 Difference]: Without dead ends: 294 [2022-03-03 19:14:15,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:15,916 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:15,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-03-03 19:14:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 217. [2022-03-03 19:14:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.009259259259259) internal successors, (650), 216 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 650 transitions. [2022-03-03 19:14:15,919 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 650 transitions. Word has length 19 [2022-03-03 19:14:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:15,919 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 650 transitions. [2022-03-03 19:14:15,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 650 transitions. [2022-03-03 19:14:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:15,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:15,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:15,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-03-03 19:14:15,919 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:15,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1307364804, now seen corresponding path program 61 times [2022-03-03 19:14:15,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:15,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528059951] [2022-03-03 19:14:15,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:15,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:15,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:15,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528059951] [2022-03-03 19:14:15,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528059951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:15,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307727815] [2022-03-03 19:14:15,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:15,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:15,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:15,951 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:15,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-03-03 19:14:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:15,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:15,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307727815] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:16,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:16,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:14:16,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865078439] [2022-03-03 19:14:16,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:16,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:14:16,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:14:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:14:16,069 INFO L87 Difference]: Start difference. First operand 217 states and 650 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:16,177 INFO L93 Difference]: Finished difference Result 392 states and 1146 transitions. [2022-03-03 19:14:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:16,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:16,178 INFO L225 Difference]: With dead ends: 392 [2022-03-03 19:14:16,178 INFO L226 Difference]: Without dead ends: 392 [2022-03-03 19:14:16,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:16,178 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:16,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 82 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-03 19:14:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2022-03-03 19:14:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.009132420091324) internal successors, (659), 219 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 659 transitions. [2022-03-03 19:14:16,184 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 659 transitions. Word has length 19 [2022-03-03 19:14:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:16,184 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 659 transitions. [2022-03-03 19:14:16,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 659 transitions. [2022-03-03 19:14:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:16,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:16,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:16,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:16,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2022-03-03 19:14:16,415 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash -936272864, now seen corresponding path program 62 times [2022-03-03 19:14:16,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:16,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379424777] [2022-03-03 19:14:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:16,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379424777] [2022-03-03 19:14:16,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379424777] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:16,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204585713] [2022-03-03 19:14:16,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:16,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:16,448 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:16,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-03-03 19:14:16,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:16,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:16,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:16,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204585713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:16,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:16,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:16,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487894166] [2022-03-03 19:14:16,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:16,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:16,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:16,583 INFO L87 Difference]: Start difference. First operand 220 states and 659 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:16,697 INFO L93 Difference]: Finished difference Result 455 states and 1314 transitions. [2022-03-03 19:14:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:16,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:16,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:16,698 INFO L225 Difference]: With dead ends: 455 [2022-03-03 19:14:16,698 INFO L226 Difference]: Without dead ends: 455 [2022-03-03 19:14:16,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:16,698 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:16,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-03-03 19:14:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 223. [2022-03-03 19:14:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.0225225225225225) internal successors, (671), 222 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 671 transitions. [2022-03-03 19:14:16,702 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 671 transitions. Word has length 19 [2022-03-03 19:14:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:16,702 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 671 transitions. [2022-03-03 19:14:16,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 671 transitions. [2022-03-03 19:14:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:16,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:16,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:16,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:16,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:16,919 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1097492804, now seen corresponding path program 63 times [2022-03-03 19:14:16,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:16,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448154135] [2022-03-03 19:14:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:16,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448154135] [2022-03-03 19:14:16,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448154135] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:16,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887218157] [2022-03-03 19:14:16,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:16,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:16,948 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:16,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-03-03 19:14:16,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:16,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:16,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:16,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:17,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:17,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887218157] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:17,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:17,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:17,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478345785] [2022-03-03 19:14:17,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:17,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:17,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:17,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:17,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:17,092 INFO L87 Difference]: Start difference. First operand 223 states and 671 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:17,207 INFO L93 Difference]: Finished difference Result 401 states and 1167 transitions. [2022-03-03 19:14:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:17,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:17,208 INFO L225 Difference]: With dead ends: 401 [2022-03-03 19:14:17,208 INFO L226 Difference]: Without dead ends: 395 [2022-03-03 19:14:17,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:17,208 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:17,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 66 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-03-03 19:14:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 217. [2022-03-03 19:14:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.009259259259259) internal successors, (650), 216 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 650 transitions. [2022-03-03 19:14:17,211 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 650 transitions. Word has length 19 [2022-03-03 19:14:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:17,211 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 650 transitions. [2022-03-03 19:14:17,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 650 transitions. [2022-03-03 19:14:17,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:17,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:17,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:17,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:17,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2022-03-03 19:14:17,427 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash 103962934, now seen corresponding path program 64 times [2022-03-03 19:14:17,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:17,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587657627] [2022-03-03 19:14:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:17,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:17,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:17,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587657627] [2022-03-03 19:14:17,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587657627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:17,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628703673] [2022-03-03 19:14:17,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:17,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:17,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:17,471 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:17,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-03-03 19:14:17,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:17,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:17,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:17,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:17,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628703673] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:17,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:17,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:17,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878247149] [2022-03-03 19:14:17,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:17,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:17,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:17,644 INFO L87 Difference]: Start difference. First operand 217 states and 650 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:17,790 INFO L93 Difference]: Finished difference Result 425 states and 1224 transitions. [2022-03-03 19:14:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:17,791 INFO L225 Difference]: With dead ends: 425 [2022-03-03 19:14:17,791 INFO L226 Difference]: Without dead ends: 425 [2022-03-03 19:14:17,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:17,791 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:17,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 98 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-03 19:14:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 223. [2022-03-03 19:14:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.036036036036036) internal successors, (674), 222 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 674 transitions. [2022-03-03 19:14:17,795 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 674 transitions. Word has length 19 [2022-03-03 19:14:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:17,795 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 674 transitions. [2022-03-03 19:14:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 674 transitions. [2022-03-03 19:14:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:17,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:17,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:17,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:18,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2022-03-03 19:14:18,007 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash -57257006, now seen corresponding path program 65 times [2022-03-03 19:14:18,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:18,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270339368] [2022-03-03 19:14:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:18,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:18,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270339368] [2022-03-03 19:14:18,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270339368] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:18,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711611330] [2022-03-03 19:14:18,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:18,047 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:18,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-03-03 19:14:18,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:18,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:18,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:18,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:18,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:18,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711611330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:18,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:18,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:18,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383301451] [2022-03-03 19:14:18,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:18,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:18,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:18,203 INFO L87 Difference]: Start difference. First operand 223 states and 674 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:18,328 INFO L93 Difference]: Finished difference Result 431 states and 1233 transitions. [2022-03-03 19:14:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:18,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:18,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:18,329 INFO L225 Difference]: With dead ends: 431 [2022-03-03 19:14:18,329 INFO L226 Difference]: Without dead ends: 425 [2022-03-03 19:14:18,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:18,329 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 98 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:18,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 81 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-03 19:14:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 220. [2022-03-03 19:14:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.0228310502283104) internal successors, (662), 219 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 662 transitions. [2022-03-03 19:14:18,333 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 662 transitions. Word has length 19 [2022-03-03 19:14:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:18,333 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 662 transitions. [2022-03-03 19:14:18,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 662 transitions. [2022-03-03 19:14:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:18,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:18,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:18,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:18,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2022-03-03 19:14:18,534 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1624579904, now seen corresponding path program 66 times [2022-03-03 19:14:18,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:18,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020388948] [2022-03-03 19:14:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:18,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:18,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020388948] [2022-03-03 19:14:18,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020388948] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:18,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252061576] [2022-03-03 19:14:18,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:18,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:18,566 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:18,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-03-03 19:14:18,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:18,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:18,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:18,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:18,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:18,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252061576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:18,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:18,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:18,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281387888] [2022-03-03 19:14:18,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:18,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:18,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:18,680 INFO L87 Difference]: Start difference. First operand 220 states and 662 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:18,771 INFO L93 Difference]: Finished difference Result 380 states and 1101 transitions. [2022-03-03 19:14:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:18,772 INFO L225 Difference]: With dead ends: 380 [2022-03-03 19:14:18,772 INFO L226 Difference]: Without dead ends: 368 [2022-03-03 19:14:18,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:18,772 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:18,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 69 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-03 19:14:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 215. [2022-03-03 19:14:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.014018691588785) internal successors, (645), 214 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 645 transitions. [2022-03-03 19:14:18,775 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 645 transitions. Word has length 19 [2022-03-03 19:14:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:18,775 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 645 transitions. [2022-03-03 19:14:18,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 645 transitions. [2022-03-03 19:14:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:18,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:18,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:18,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2022-03-03 19:14:18,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:18,991 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash 537779126, now seen corresponding path program 61 times [2022-03-03 19:14:18,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:18,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302174039] [2022-03-03 19:14:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:18,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302174039] [2022-03-03 19:14:19,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302174039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:19,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:19,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:19,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029961927] [2022-03-03 19:14:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:19,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:19,026 INFO L87 Difference]: Start difference. First operand 215 states and 645 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:19,115 INFO L93 Difference]: Finished difference Result 362 states and 1019 transitions. [2022-03-03 19:14:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:19,121 INFO L225 Difference]: With dead ends: 362 [2022-03-03 19:14:19,121 INFO L226 Difference]: Without dead ends: 346 [2022-03-03 19:14:19,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:19,121 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:19,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 53 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-03 19:14:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 219. [2022-03-03 19:14:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.9954128440366974) internal successors, (653), 218 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 653 transitions. [2022-03-03 19:14:19,124 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 653 transitions. Word has length 19 [2022-03-03 19:14:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:19,124 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 653 transitions. [2022-03-03 19:14:19,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 653 transitions. [2022-03-03 19:14:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:19,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:19,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:19,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-03-03 19:14:19,125 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash -843272622, now seen corresponding path program 62 times [2022-03-03 19:14:19,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:19,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091431962] [2022-03-03 19:14:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091431962] [2022-03-03 19:14:19,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091431962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:19,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:19,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:19,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845267582] [2022-03-03 19:14:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:19,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:19,160 INFO L87 Difference]: Start difference. First operand 219 states and 653 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:19,258 INFO L93 Difference]: Finished difference Result 391 states and 1075 transitions. [2022-03-03 19:14:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:19,259 INFO L225 Difference]: With dead ends: 391 [2022-03-03 19:14:19,259 INFO L226 Difference]: Without dead ends: 383 [2022-03-03 19:14:19,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:19,259 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 76 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:19,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 63 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-03 19:14:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 231. [2022-03-03 19:14:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.9695652173913043) internal successors, (683), 230 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 683 transitions. [2022-03-03 19:14:19,262 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 683 transitions. Word has length 19 [2022-03-03 19:14:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:19,263 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 683 transitions. [2022-03-03 19:14:19,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 683 transitions. [2022-03-03 19:14:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:19,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:19,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:19,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-03-03 19:14:19,263 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash 64388790, now seen corresponding path program 63 times [2022-03-03 19:14:19,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:19,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448169757] [2022-03-03 19:14:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:19,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448169757] [2022-03-03 19:14:19,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448169757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:19,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:19,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:19,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090340038] [2022-03-03 19:14:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:19,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:19,294 INFO L87 Difference]: Start difference. First operand 231 states and 683 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:19,385 INFO L93 Difference]: Finished difference Result 354 states and 997 transitions. [2022-03-03 19:14:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:19,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:19,386 INFO L225 Difference]: With dead ends: 354 [2022-03-03 19:14:19,386 INFO L226 Difference]: Without dead ends: 344 [2022-03-03 19:14:19,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:19,386 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 51 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:19,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 62 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-03-03 19:14:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 217. [2022-03-03 19:14:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 3.0) internal successors, (648), 216 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 648 transitions. [2022-03-03 19:14:19,389 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 648 transitions. Word has length 19 [2022-03-03 19:14:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:19,389 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 648 transitions. [2022-03-03 19:14:19,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 648 transitions. [2022-03-03 19:14:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:19,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:19,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:19,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-03-03 19:14:19,390 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1339266044, now seen corresponding path program 64 times [2022-03-03 19:14:19,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:19,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204764315] [2022-03-03 19:14:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:19,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204764315] [2022-03-03 19:14:19,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204764315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:19,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:19,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:19,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367043373] [2022-03-03 19:14:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:19,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:19,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:19,433 INFO L87 Difference]: Start difference. First operand 217 states and 648 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:19,520 INFO L93 Difference]: Finished difference Result 397 states and 1090 transitions. [2022-03-03 19:14:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:19,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:19,521 INFO L225 Difference]: With dead ends: 397 [2022-03-03 19:14:19,521 INFO L226 Difference]: Without dead ends: 389 [2022-03-03 19:14:19,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:19,521 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:19,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 53 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-03 19:14:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 233. [2022-03-03 19:14:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.9741379310344827) internal successors, (690), 232 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 690 transitions. [2022-03-03 19:14:19,526 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 690 transitions. Word has length 19 [2022-03-03 19:14:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:19,526 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 690 transitions. [2022-03-03 19:14:19,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,526 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 690 transitions. [2022-03-03 19:14:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:19,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:19,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:19,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-03-03 19:14:19,528 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:19,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2048039840, now seen corresponding path program 65 times [2022-03-03 19:14:19,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:19,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408086810] [2022-03-03 19:14:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:19,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408086810] [2022-03-03 19:14:19,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408086810] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:19,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:19,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:19,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366716931] [2022-03-03 19:14:19,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:19,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:19,561 INFO L87 Difference]: Start difference. First operand 233 states and 690 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:19,653 INFO L93 Difference]: Finished difference Result 395 states and 1085 transitions. [2022-03-03 19:14:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:19,654 INFO L225 Difference]: With dead ends: 395 [2022-03-03 19:14:19,654 INFO L226 Difference]: Without dead ends: 387 [2022-03-03 19:14:19,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:19,654 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 76 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:19,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 56 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-03-03 19:14:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 231. [2022-03-03 19:14:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.9695652173913043) internal successors, (683), 230 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 683 transitions. [2022-03-03 19:14:19,657 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 683 transitions. Word has length 19 [2022-03-03 19:14:19,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:19,657 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 683 transitions. [2022-03-03 19:14:19,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 683 transitions. [2022-03-03 19:14:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:19,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:19,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:19,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-03-03 19:14:19,658 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 475330896, now seen corresponding path program 66 times [2022-03-03 19:14:19,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:19,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124446406] [2022-03-03 19:14:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124446406] [2022-03-03 19:14:19,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124446406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:19,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:19,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:19,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994413963] [2022-03-03 19:14:19,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:19,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:19,687 INFO L87 Difference]: Start difference. First operand 231 states and 683 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:19,770 INFO L93 Difference]: Finished difference Result 358 states and 1005 transitions. [2022-03-03 19:14:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:19,771 INFO L225 Difference]: With dead ends: 358 [2022-03-03 19:14:19,771 INFO L226 Difference]: Without dead ends: 342 [2022-03-03 19:14:19,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:19,771 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:19,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 68 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-03-03 19:14:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 215. [2022-03-03 19:14:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0093457943925235) internal successors, (644), 214 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 644 transitions. [2022-03-03 19:14:19,774 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 644 transitions. Word has length 19 [2022-03-03 19:14:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:19,774 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 644 transitions. [2022-03-03 19:14:19,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 644 transitions. [2022-03-03 19:14:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:19,775 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:19,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:19,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-03-03 19:14:19,775 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash -879454808, now seen corresponding path program 67 times [2022-03-03 19:14:19,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:19,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834197414] [2022-03-03 19:14:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:19,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:19,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834197414] [2022-03-03 19:14:19,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834197414] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:19,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825987476] [2022-03-03 19:14:19,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:19,817 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:19,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-03-03 19:14:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:19,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:19,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:19,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825987476] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:19,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:19,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:14:19,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829689343] [2022-03-03 19:14:19,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:19,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:14:19,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:14:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:14:19,952 INFO L87 Difference]: Start difference. First operand 215 states and 644 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:20,044 INFO L93 Difference]: Finished difference Result 500 states and 1471 transitions. [2022-03-03 19:14:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:20,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:20,045 INFO L225 Difference]: With dead ends: 500 [2022-03-03 19:14:20,045 INFO L226 Difference]: Without dead ends: 500 [2022-03-03 19:14:20,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:20,045 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:20,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 64 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-03-03 19:14:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 215. [2022-03-03 19:14:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0093457943925235) internal successors, (644), 214 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 644 transitions. [2022-03-03 19:14:20,048 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 644 transitions. Word has length 19 [2022-03-03 19:14:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:20,048 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 644 transitions. [2022-03-03 19:14:20,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 644 transitions. [2022-03-03 19:14:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:20,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:20,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:20,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:20,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:20,249 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:20,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:20,249 INFO L85 PathProgramCache]: Analyzing trace with hash -508362868, now seen corresponding path program 68 times [2022-03-03 19:14:20,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:20,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082461653] [2022-03-03 19:14:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:20,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:20,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:20,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082461653] [2022-03-03 19:14:20,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082461653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:20,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734836485] [2022-03-03 19:14:20,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:20,294 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:20,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-03-03 19:14:20,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:20,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:20,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:20,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:20,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734836485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:20,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:20,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:20,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616202296] [2022-03-03 19:14:20,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:20,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:20,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:20,472 INFO L87 Difference]: Start difference. First operand 215 states and 644 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:20,594 INFO L93 Difference]: Finished difference Result 518 states and 1504 transitions. [2022-03-03 19:14:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:20,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:20,595 INFO L225 Difference]: With dead ends: 518 [2022-03-03 19:14:20,596 INFO L226 Difference]: Without dead ends: 518 [2022-03-03 19:14:20,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:20,596 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:20,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 84 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-03-03 19:14:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 221. [2022-03-03 19:14:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 3.05) internal successors, (671), 220 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 671 transitions. [2022-03-03 19:14:20,599 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 671 transitions. Word has length 19 [2022-03-03 19:14:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:20,599 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 671 transitions. [2022-03-03 19:14:20,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 671 transitions. [2022-03-03 19:14:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:20,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:20,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:20,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:20,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2022-03-03 19:14:20,800 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash -669582808, now seen corresponding path program 69 times [2022-03-03 19:14:20,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:20,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814718569] [2022-03-03 19:14:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:20,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:20,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:20,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814718569] [2022-03-03 19:14:20,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814718569] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:20,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110806043] [2022-03-03 19:14:20,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:20,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:20,839 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:20,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-03-03 19:14:20,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:20,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:20,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:20,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110806043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:21,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:21,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:21,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391333401] [2022-03-03 19:14:21,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:21,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:21,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:21,013 INFO L87 Difference]: Start difference. First operand 221 states and 671 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:21,137 INFO L93 Difference]: Finished difference Result 464 states and 1351 transitions. [2022-03-03 19:14:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:21,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:21,139 INFO L225 Difference]: With dead ends: 464 [2022-03-03 19:14:21,139 INFO L226 Difference]: Without dead ends: 458 [2022-03-03 19:14:21,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:21,139 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:21,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 87 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-03 19:14:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 221. [2022-03-03 19:14:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 3.022727272727273) internal successors, (665), 220 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 665 transitions. [2022-03-03 19:14:21,142 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 665 transitions. Word has length 19 [2022-03-03 19:14:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:21,142 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 665 transitions. [2022-03-03 19:14:21,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 665 transitions. [2022-03-03 19:14:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:21,143 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:21,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:21,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2022-03-03 19:14:21,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2022-03-03 19:14:21,343 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1824108238, now seen corresponding path program 67 times [2022-03-03 19:14:21,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:21,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982479256] [2022-03-03 19:14:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:21,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982479256] [2022-03-03 19:14:21,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982479256] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:21,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:21,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:21,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395842063] [2022-03-03 19:14:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:21,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:21,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:21,379 INFO L87 Difference]: Start difference. First operand 221 states and 665 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:21,481 INFO L93 Difference]: Finished difference Result 422 states and 1177 transitions. [2022-03-03 19:14:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:21,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:21,482 INFO L225 Difference]: With dead ends: 422 [2022-03-03 19:14:21,482 INFO L226 Difference]: Without dead ends: 406 [2022-03-03 19:14:21,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:21,482 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:21,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 70 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-03-03 19:14:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 225. [2022-03-03 19:14:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.0044642857142856) internal successors, (673), 224 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 673 transitions. [2022-03-03 19:14:21,485 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 673 transitions. Word has length 19 [2022-03-03 19:14:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:21,486 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 673 transitions. [2022-03-03 19:14:21,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 673 transitions. [2022-03-03 19:14:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:21,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:21,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:21,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-03-03 19:14:21,486 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1089807310, now seen corresponding path program 68 times [2022-03-03 19:14:21,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:21,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830018376] [2022-03-03 19:14:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:21,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:21,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830018376] [2022-03-03 19:14:21,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830018376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:21,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:21,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:21,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457928503] [2022-03-03 19:14:21,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:21,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:21,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:21,513 INFO L87 Difference]: Start difference. First operand 225 states and 673 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:21,580 INFO L93 Difference]: Finished difference Result 451 states and 1231 transitions. [2022-03-03 19:14:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:21,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:21,581 INFO L225 Difference]: With dead ends: 451 [2022-03-03 19:14:21,581 INFO L226 Difference]: Without dead ends: 443 [2022-03-03 19:14:21,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:21,581 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 95 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:21,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 56 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-03 19:14:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 241. [2022-03-03 19:14:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.9875) internal successors, (717), 240 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 717 transitions. [2022-03-03 19:14:21,585 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 717 transitions. Word has length 19 [2022-03-03 19:14:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:21,585 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 717 transitions. [2022-03-03 19:14:21,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 717 transitions. [2022-03-03 19:14:21,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:21,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:21,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:21,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-03-03 19:14:21,586 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1997468722, now seen corresponding path program 69 times [2022-03-03 19:14:21,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:21,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396176927] [2022-03-03 19:14:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:21,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396176927] [2022-03-03 19:14:21,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396176927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:21,610 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:21,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:21,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675164136] [2022-03-03 19:14:21,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:21,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:21,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:21,610 INFO L87 Difference]: Start difference. First operand 241 states and 717 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:21,669 INFO L93 Difference]: Finished difference Result 414 states and 1145 transitions. [2022-03-03 19:14:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:21,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:21,669 INFO L225 Difference]: With dead ends: 414 [2022-03-03 19:14:21,670 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:14:21,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:21,670 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:21,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 55 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:14:21,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 227. [2022-03-03 19:14:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 3.0132743362831858) internal successors, (681), 226 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 681 transitions. [2022-03-03 19:14:21,673 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 681 transitions. Word has length 19 [2022-03-03 19:14:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:21,673 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 681 transitions. [2022-03-03 19:14:21,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 681 transitions. [2022-03-03 19:14:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:21,673 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:21,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:21,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-03-03 19:14:21,673 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:21,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1563535018, now seen corresponding path program 70 times [2022-03-03 19:14:21,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:21,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688073721] [2022-03-03 19:14:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:21,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688073721] [2022-03-03 19:14:21,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688073721] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:21,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5354806] [2022-03-03 19:14:21,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:21,698 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:21,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-03-03 19:14:21,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:21,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:21,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:21,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5354806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:21,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:21,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 19:14:21,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18602390] [2022-03-03 19:14:21,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:21,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:14:21,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:14:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:14:21,794 INFO L87 Difference]: Start difference. First operand 227 states and 681 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:21,858 INFO L93 Difference]: Finished difference Result 414 states and 1216 transitions. [2022-03-03 19:14:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:21,859 INFO L225 Difference]: With dead ends: 414 [2022-03-03 19:14:21,859 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:14:21,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:21,859 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:21,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 62 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:21,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:14:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 210. [2022-03-03 19:14:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9808612440191387) internal successors, (623), 209 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 623 transitions. [2022-03-03 19:14:21,862 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 623 transitions. Word has length 19 [2022-03-03 19:14:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:21,862 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 623 transitions. [2022-03-03 19:14:21,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 623 transitions. [2022-03-03 19:14:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:21,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:21,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:21,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:22,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2022-03-03 19:14:22,075 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash -617633546, now seen corresponding path program 70 times [2022-03-03 19:14:22,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:22,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370498877] [2022-03-03 19:14:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:22,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370498877] [2022-03-03 19:14:22,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370498877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:22,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206549434] [2022-03-03 19:14:22,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:22,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:22,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:22,102 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:22,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-03-03 19:14:22,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:22,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:22,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:22,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206549434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:22,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:22,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:22,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714647343] [2022-03-03 19:14:22,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:22,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:22,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:22,201 INFO L87 Difference]: Start difference. First operand 210 states and 623 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:22,266 INFO L93 Difference]: Finished difference Result 346 states and 975 transitions. [2022-03-03 19:14:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:22,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:22,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:22,267 INFO L225 Difference]: With dead ends: 346 [2022-03-03 19:14:22,267 INFO L226 Difference]: Without dead ends: 330 [2022-03-03 19:14:22,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:22,267 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:22,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 72 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-03 19:14:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 200. [2022-03-03 19:14:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9849246231155777) internal successors, (594), 199 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 594 transitions. [2022-03-03 19:14:22,269 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 594 transitions. Word has length 19 [2022-03-03 19:14:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:22,269 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 594 transitions. [2022-03-03 19:14:22,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 594 transitions. [2022-03-03 19:14:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:22,270 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:22,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:22,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:22,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable350 [2022-03-03 19:14:22,485 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:22,485 INFO L85 PathProgramCache]: Analyzing trace with hash -747576714, now seen corresponding path program 71 times [2022-03-03 19:14:22,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:22,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026065174] [2022-03-03 19:14:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:22,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:22,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026065174] [2022-03-03 19:14:22,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026065174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:22,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41378308] [2022-03-03 19:14:22,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:22,513 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:22,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-03-03 19:14:22,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:22,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:22,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:22,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41378308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:22,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:22,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:22,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199151506] [2022-03-03 19:14:22,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:22,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:22,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:22,671 INFO L87 Difference]: Start difference. First operand 200 states and 594 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:22,806 INFO L93 Difference]: Finished difference Result 381 states and 1109 transitions. [2022-03-03 19:14:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:22,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:22,807 INFO L225 Difference]: With dead ends: 381 [2022-03-03 19:14:22,807 INFO L226 Difference]: Without dead ends: 381 [2022-03-03 19:14:22,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:22,807 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:22,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 77 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-03-03 19:14:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 204. [2022-03-03 19:14:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.0246305418719213) internal successors, (614), 203 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 614 transitions. [2022-03-03 19:14:22,810 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 614 transitions. Word has length 19 [2022-03-03 19:14:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:22,810 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 614 transitions. [2022-03-03 19:14:22,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 614 transitions. [2022-03-03 19:14:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:22,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:22,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:22,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:23,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:23,026 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash -113228298, now seen corresponding path program 71 times [2022-03-03 19:14:23,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:23,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110241128] [2022-03-03 19:14:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:23,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:23,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110241128] [2022-03-03 19:14:23,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110241128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:23,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900890956] [2022-03-03 19:14:23,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:23,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:23,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:23,071 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:23,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-03-03 19:14:23,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:23,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:23,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:23,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:23,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:23,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900890956] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:23,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:23,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:23,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915726276] [2022-03-03 19:14:23,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:23,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:23,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:23,266 INFO L87 Difference]: Start difference. First operand 204 states and 614 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:23,369 INFO L93 Difference]: Finished difference Result 356 states and 1020 transitions. [2022-03-03 19:14:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:23,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:23,370 INFO L225 Difference]: With dead ends: 356 [2022-03-03 19:14:23,370 INFO L226 Difference]: Without dead ends: 348 [2022-03-03 19:14:23,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:23,370 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:23,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 80 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-03 19:14:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 216. [2022-03-03 19:14:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0232558139534884) internal successors, (650), 215 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 650 transitions. [2022-03-03 19:14:23,373 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 650 transitions. Word has length 19 [2022-03-03 19:14:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:23,374 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 650 transitions. [2022-03-03 19:14:23,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 650 transitions. [2022-03-03 19:14:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:23,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:23,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:23,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2022-03-03 19:14:23,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:23,575 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:23,575 INFO L85 PathProgramCache]: Analyzing trace with hash -153525360, now seen corresponding path program 72 times [2022-03-03 19:14:23,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:23,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113229] [2022-03-03 19:14:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:23,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:23,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113229] [2022-03-03 19:14:23,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113229] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:23,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019201564] [2022-03-03 19:14:23,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:23,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:23,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:23,634 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:23,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-03-03 19:14:23,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:23,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:23,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:23,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:23,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:23,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019201564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:23,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:23,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-03-03 19:14:23,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951432182] [2022-03-03 19:14:23,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:23,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:14:23,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:14:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:14:23,792 INFO L87 Difference]: Start difference. First operand 216 states and 650 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:23,875 INFO L93 Difference]: Finished difference Result 339 states and 995 transitions. [2022-03-03 19:14:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:23,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:23,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:23,876 INFO L225 Difference]: With dead ends: 339 [2022-03-03 19:14:23,876 INFO L226 Difference]: Without dead ends: 330 [2022-03-03 19:14:23,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:23,876 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:23,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 74 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-03 19:14:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 216. [2022-03-03 19:14:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0046511627906978) internal successors, (646), 215 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 646 transitions. [2022-03-03 19:14:23,879 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 646 transitions. Word has length 19 [2022-03-03 19:14:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:23,879 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 646 transitions. [2022-03-03 19:14:23,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 646 transitions. [2022-03-03 19:14:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:23,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:23,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:23,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2022-03-03 19:14:24,096 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2107693454, now seen corresponding path program 72 times [2022-03-03 19:14:24,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:24,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061070890] [2022-03-03 19:14:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:24,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:24,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061070890] [2022-03-03 19:14:24,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061070890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:24,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281991859] [2022-03-03 19:14:24,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:24,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:24,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:24,135 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:24,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-03-03 19:14:24,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:24,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:24,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:24,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:24,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:24,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281991859] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:24,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:24,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:24,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060851617] [2022-03-03 19:14:24,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:24,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:24,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:24,310 INFO L87 Difference]: Start difference. First operand 216 states and 646 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:24,389 INFO L93 Difference]: Finished difference Result 310 states and 907 transitions. [2022-03-03 19:14:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:24,389 INFO L225 Difference]: With dead ends: 310 [2022-03-03 19:14:24,389 INFO L226 Difference]: Without dead ends: 310 [2022-03-03 19:14:24,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:24,390 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:24,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 81 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-03-03 19:14:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2022-03-03 19:14:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.9846153846153847) internal successors, (582), 195 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 582 transitions. [2022-03-03 19:14:24,392 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 582 transitions. Word has length 19 [2022-03-03 19:14:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:24,392 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 582 transitions. [2022-03-03 19:14:24,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 582 transitions. [2022-03-03 19:14:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:24,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:24,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:24,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Ended with exit code 0 [2022-03-03 19:14:24,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable354 [2022-03-03 19:14:24,607 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1390342390, now seen corresponding path program 73 times [2022-03-03 19:14:24,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:24,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382377522] [2022-03-03 19:14:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:24,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:24,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382377522] [2022-03-03 19:14:24,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382377522] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:24,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377569077] [2022-03-03 19:14:24,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:24,637 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:24,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-03-03 19:14:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:24,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:24,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:24,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:24,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377569077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:24,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:24,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:24,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013432442] [2022-03-03 19:14:24,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:24,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:24,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:24,764 INFO L87 Difference]: Start difference. First operand 196 states and 582 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:24,841 INFO L93 Difference]: Finished difference Result 457 states and 1329 transitions. [2022-03-03 19:14:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:24,842 INFO L225 Difference]: With dead ends: 457 [2022-03-03 19:14:24,842 INFO L226 Difference]: Without dead ends: 457 [2022-03-03 19:14:24,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:24,842 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:24,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 74 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-03-03 19:14:24,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 204. [2022-03-03 19:14:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.0541871921182264) internal successors, (620), 203 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 620 transitions. [2022-03-03 19:14:24,845 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 620 transitions. Word has length 19 [2022-03-03 19:14:24,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:24,845 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 620 transitions. [2022-03-03 19:14:24,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 620 transitions. [2022-03-03 19:14:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:24,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:24,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:24,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2022-03-03 19:14:25,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:25,047 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1229122450, now seen corresponding path program 74 times [2022-03-03 19:14:25,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:25,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403029115] [2022-03-03 19:14:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:25,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403029115] [2022-03-03 19:14:25,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403029115] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:25,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896279211] [2022-03-03 19:14:25,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:25,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:25,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:25,086 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:25,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-03-03 19:14:25,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:25,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:25,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:25,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896279211] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:25,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:25,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:25,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838138310] [2022-03-03 19:14:25,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:25,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:25,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:25,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:25,253 INFO L87 Difference]: Start difference. First operand 204 states and 620 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:25,357 INFO L93 Difference]: Finished difference Result 439 states and 1260 transitions. [2022-03-03 19:14:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:25,358 INFO L225 Difference]: With dead ends: 439 [2022-03-03 19:14:25,358 INFO L226 Difference]: Without dead ends: 433 [2022-03-03 19:14:25,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:25,359 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:25,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 65 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-03 19:14:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 207. [2022-03-03 19:14:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 3.0242718446601944) internal successors, (623), 206 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 623 transitions. [2022-03-03 19:14:25,363 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 623 transitions. Word has length 19 [2022-03-03 19:14:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:25,363 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 623 transitions. [2022-03-03 19:14:25,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 623 transitions. [2022-03-03 19:14:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:25,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:25,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:25,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:25,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2022-03-03 19:14:25,575 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1026999314, now seen corresponding path program 73 times [2022-03-03 19:14:25,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:25,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006446529] [2022-03-03 19:14:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:25,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006446529] [2022-03-03 19:14:25,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006446529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:25,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:25,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:25,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388539867] [2022-03-03 19:14:25,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:25,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:25,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:25,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:25,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:25,617 INFO L87 Difference]: Start difference. First operand 207 states and 623 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:25,729 INFO L93 Difference]: Finished difference Result 424 states and 1206 transitions. [2022-03-03 19:14:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:25,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:25,730 INFO L225 Difference]: With dead ends: 424 [2022-03-03 19:14:25,730 INFO L226 Difference]: Without dead ends: 416 [2022-03-03 19:14:25,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:25,730 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:25,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 72 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-03-03 19:14:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 225. [2022-03-03 19:14:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.0267857142857144) internal successors, (678), 224 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 678 transitions. [2022-03-03 19:14:25,739 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 678 transitions. Word has length 19 [2022-03-03 19:14:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:25,739 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 678 transitions. [2022-03-03 19:14:25,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 678 transitions. [2022-03-03 19:14:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:25,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:25,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:25,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-03-03 19:14:25,740 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1934660726, now seen corresponding path program 74 times [2022-03-03 19:14:25,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:25,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924711029] [2022-03-03 19:14:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:25,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924711029] [2022-03-03 19:14:25,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924711029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:25,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:25,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:25,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286997665] [2022-03-03 19:14:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:25,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:25,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:25,783 INFO L87 Difference]: Start difference. First operand 225 states and 678 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:25,890 INFO L93 Difference]: Finished difference Result 430 states and 1221 transitions. [2022-03-03 19:14:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:25,891 INFO L225 Difference]: With dead ends: 430 [2022-03-03 19:14:25,891 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:14:25,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:25,891 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:25,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:14:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 225. [2022-03-03 19:14:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.03125) internal successors, (679), 224 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 679 transitions. [2022-03-03 19:14:25,894 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 679 transitions. Word has length 19 [2022-03-03 19:14:25,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:25,894 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 679 transitions. [2022-03-03 19:14:25,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 679 transitions. [2022-03-03 19:14:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:25,895 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:25,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:25,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-03-03 19:14:25,895 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1264124024, now seen corresponding path program 75 times [2022-03-03 19:14:25,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:25,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517038978] [2022-03-03 19:14:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:25,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517038978] [2022-03-03 19:14:25,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517038978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:25,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539648659] [2022-03-03 19:14:25,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:25,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:25,944 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:25,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-03-03 19:14:25,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:14:25,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:25,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:26,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:26,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539648659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:26,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:26,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:26,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329315936] [2022-03-03 19:14:26,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:26,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:26,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:26,154 INFO L87 Difference]: Start difference. First operand 225 states and 679 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:26,271 INFO L93 Difference]: Finished difference Result 465 states and 1336 transitions. [2022-03-03 19:14:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:26,272 INFO L225 Difference]: With dead ends: 465 [2022-03-03 19:14:26,272 INFO L226 Difference]: Without dead ends: 465 [2022-03-03 19:14:26,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:26,272 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:26,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 73 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-03-03 19:14:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 223. [2022-03-03 19:14:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.0225225225225225) internal successors, (671), 222 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 671 transitions. [2022-03-03 19:14:26,275 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 671 transitions. Word has length 19 [2022-03-03 19:14:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:26,276 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 671 transitions. [2022-03-03 19:14:26,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 671 transitions. [2022-03-03 19:14:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:26,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:26,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:26,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2022-03-03 19:14:26,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable359 [2022-03-03 19:14:26,487 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:26,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1566481458, now seen corresponding path program 75 times [2022-03-03 19:14:26,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:26,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369423725] [2022-03-03 19:14:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:26,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:26,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:26,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369423725] [2022-03-03 19:14:26,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369423725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:26,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545751202] [2022-03-03 19:14:26,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:26,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:26,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:26,547 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:26,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-03-03 19:14:26,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:26,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:26,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:26,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:26,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545751202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:26,730 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:26,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:26,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789032312] [2022-03-03 19:14:26,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:26,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:26,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:26,731 INFO L87 Difference]: Start difference. First operand 223 states and 671 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:26,858 INFO L93 Difference]: Finished difference Result 430 states and 1208 transitions. [2022-03-03 19:14:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:26,859 INFO L225 Difference]: With dead ends: 430 [2022-03-03 19:14:26,859 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:14:26,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:26,859 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 82 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:26,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 106 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:14:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 216. [2022-03-03 19:14:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0325581395348835) internal successors, (652), 215 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 652 transitions. [2022-03-03 19:14:26,862 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 652 transitions. Word has length 19 [2022-03-03 19:14:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:26,862 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 652 transitions. [2022-03-03 19:14:26,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 652 transitions. [2022-03-03 19:14:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:26,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:26,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:26,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2022-03-03 19:14:27,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:27,071 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:27,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash -199360724, now seen corresponding path program 76 times [2022-03-03 19:14:27,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:27,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932145845] [2022-03-03 19:14:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:27,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:27,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:27,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932145845] [2022-03-03 19:14:27,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932145845] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:27,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933282631] [2022-03-03 19:14:27,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:27,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:27,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:27,100 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:27,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-03-03 19:14:27,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:27,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:27,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:27,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:27,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:27,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933282631] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:27,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:27,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:27,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662109119] [2022-03-03 19:14:27,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:27,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:27,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:27,282 INFO L87 Difference]: Start difference. First operand 216 states and 652 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:27,393 INFO L93 Difference]: Finished difference Result 413 states and 1189 transitions. [2022-03-03 19:14:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:27,394 INFO L225 Difference]: With dead ends: 413 [2022-03-03 19:14:27,394 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:14:27,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:14:27,394 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:27,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 81 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:14:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 216. [2022-03-03 19:14:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.013953488372093) internal successors, (648), 215 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 648 transitions. [2022-03-03 19:14:27,397 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 648 transitions. Word has length 19 [2022-03-03 19:14:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:27,397 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 648 transitions. [2022-03-03 19:14:27,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 648 transitions. [2022-03-03 19:14:27,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:27,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:27,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:27,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Ended with exit code 0 [2022-03-03 19:14:27,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:27,602 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2141438478, now seen corresponding path program 76 times [2022-03-03 19:14:27,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:27,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730545728] [2022-03-03 19:14:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:27,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:27,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730545728] [2022-03-03 19:14:27,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730545728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:27,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477794465] [2022-03-03 19:14:27,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:27,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:27,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:27,652 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:27,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-03-03 19:14:27,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:27,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:27,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:27,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:27,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477794465] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:27,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:27,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:27,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468186767] [2022-03-03 19:14:27,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:27,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:27,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:27,863 INFO L87 Difference]: Start difference. First operand 216 states and 648 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:27,972 INFO L93 Difference]: Finished difference Result 411 states and 1188 transitions. [2022-03-03 19:14:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:27,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:27,973 INFO L225 Difference]: With dead ends: 411 [2022-03-03 19:14:27,973 INFO L226 Difference]: Without dead ends: 411 [2022-03-03 19:14:27,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:27,974 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:27,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 87 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-03-03 19:14:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 212. [2022-03-03 19:14:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.014218009478673) internal successors, (636), 211 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 636 transitions. [2022-03-03 19:14:27,976 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 636 transitions. Word has length 19 [2022-03-03 19:14:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:27,976 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 636 transitions. [2022-03-03 19:14:27,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 636 transitions. [2022-03-03 19:14:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:27,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:27,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:27,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:28,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:28,177 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1812901972, now seen corresponding path program 77 times [2022-03-03 19:14:28,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:28,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840678039] [2022-03-03 19:14:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:28,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:28,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:28,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840678039] [2022-03-03 19:14:28,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840678039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:28,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:28,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:28,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606921649] [2022-03-03 19:14:28,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:28,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:28,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:28,216 INFO L87 Difference]: Start difference. First operand 212 states and 636 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:28,316 INFO L93 Difference]: Finished difference Result 384 states and 1100 transitions. [2022-03-03 19:14:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:28,317 INFO L225 Difference]: With dead ends: 384 [2022-03-03 19:14:28,317 INFO L226 Difference]: Without dead ends: 378 [2022-03-03 19:14:28,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:28,318 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 63 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:28,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 49 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:28,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-03-03 19:14:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 222. [2022-03-03 19:14:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.990950226244344) internal successors, (661), 221 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 661 transitions. [2022-03-03 19:14:28,321 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 661 transitions. Word has length 19 [2022-03-03 19:14:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:28,321 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 661 transitions. [2022-03-03 19:14:28,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,321 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 661 transitions. [2022-03-03 19:14:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:28,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:28,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-03-03 19:14:28,321 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1149511386, now seen corresponding path program 78 times [2022-03-03 19:14:28,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:28,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376945706] [2022-03-03 19:14:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:28,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:28,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376945706] [2022-03-03 19:14:28,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376945706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:28,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:28,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:28,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143011651] [2022-03-03 19:14:28,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:28,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:28,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:28,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:28,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:28,357 INFO L87 Difference]: Start difference. First operand 222 states and 661 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:28,457 INFO L93 Difference]: Finished difference Result 348 states and 1017 transitions. [2022-03-03 19:14:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:28,457 INFO L225 Difference]: With dead ends: 348 [2022-03-03 19:14:28,458 INFO L226 Difference]: Without dead ends: 337 [2022-03-03 19:14:28,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:28,458 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:28,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 57 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-03-03 19:14:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 212. [2022-03-03 19:14:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.009478672985782) internal successors, (635), 211 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 635 transitions. [2022-03-03 19:14:28,461 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 635 transitions. Word has length 19 [2022-03-03 19:14:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:28,461 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 635 transitions. [2022-03-03 19:14:28,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 635 transitions. [2022-03-03 19:14:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:28,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:28,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:28,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-03-03 19:14:28,461 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1731012878, now seen corresponding path program 77 times [2022-03-03 19:14:28,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:28,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083123595] [2022-03-03 19:14:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:28,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:28,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083123595] [2022-03-03 19:14:28,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083123595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:28,502 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:28,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:28,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012403015] [2022-03-03 19:14:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:28,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:28,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:28,503 INFO L87 Difference]: Start difference. First operand 212 states and 635 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:28,617 INFO L93 Difference]: Finished difference Result 362 states and 1032 transitions. [2022-03-03 19:14:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:28,618 INFO L225 Difference]: With dead ends: 362 [2022-03-03 19:14:28,618 INFO L226 Difference]: Without dead ends: 356 [2022-03-03 19:14:28,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:28,618 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:28,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 73 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-03 19:14:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 218. [2022-03-03 19:14:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9907834101382487) internal successors, (649), 217 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 649 transitions. [2022-03-03 19:14:28,621 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 649 transitions. Word has length 19 [2022-03-03 19:14:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:28,621 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 649 transitions. [2022-03-03 19:14:28,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 649 transitions. [2022-03-03 19:14:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:28,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:28,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:28,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-03-03 19:14:28,622 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 402083766, now seen corresponding path program 78 times [2022-03-03 19:14:28,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:28,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030224380] [2022-03-03 19:14:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:28,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:28,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:28,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030224380] [2022-03-03 19:14:28,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030224380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:28,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:28,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:28,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40699278] [2022-03-03 19:14:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:28,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:28,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:28,672 INFO L87 Difference]: Start difference. First operand 218 states and 649 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:28,782 INFO L93 Difference]: Finished difference Result 340 states and 995 transitions. [2022-03-03 19:14:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:28,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:28,783 INFO L225 Difference]: With dead ends: 340 [2022-03-03 19:14:28,783 INFO L226 Difference]: Without dead ends: 340 [2022-03-03 19:14:28,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:28,783 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:28,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 74 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-03-03 19:14:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 195. [2022-03-03 19:14:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.984536082474227) internal successors, (579), 194 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 579 transitions. [2022-03-03 19:14:28,786 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 579 transitions. Word has length 19 [2022-03-03 19:14:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:28,786 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 579 transitions. [2022-03-03 19:14:28,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 579 transitions. [2022-03-03 19:14:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:28,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:28,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:28,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-03-03 19:14:28,787 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1165716212, now seen corresponding path program 79 times [2022-03-03 19:14:28,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:28,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670355460] [2022-03-03 19:14:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:28,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:28,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670355460] [2022-03-03 19:14:28,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670355460] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:28,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233365268] [2022-03-03 19:14:28,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:28,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:28,833 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:28,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-03-03 19:14:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:28,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:28,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:29,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233365268] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:29,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:29,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:29,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000766090] [2022-03-03 19:14:29,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:29,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:29,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:29,051 INFO L87 Difference]: Start difference. First operand 195 states and 579 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:29,182 INFO L93 Difference]: Finished difference Result 375 states and 1082 transitions. [2022-03-03 19:14:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:29,182 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:29,183 INFO L225 Difference]: With dead ends: 375 [2022-03-03 19:14:29,183 INFO L226 Difference]: Without dead ends: 375 [2022-03-03 19:14:29,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:29,183 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:29,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 84 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-03 19:14:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 201. [2022-03-03 19:14:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 3.015) internal successors, (603), 200 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 603 transitions. [2022-03-03 19:14:29,186 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 603 transitions. Word has length 19 [2022-03-03 19:14:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:29,186 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 603 transitions. [2022-03-03 19:14:29,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 603 transitions. [2022-03-03 19:14:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:29,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:29,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:29,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2022-03-03 19:14:29,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable367 [2022-03-03 19:14:29,395 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:29,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1326936152, now seen corresponding path program 80 times [2022-03-03 19:14:29,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:29,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781123440] [2022-03-03 19:14:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:29,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:29,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:29,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781123440] [2022-03-03 19:14:29,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781123440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:29,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961680788] [2022-03-03 19:14:29,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:29,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:29,438 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:29,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-03-03 19:14:29,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:29,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:29,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:29,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:29,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961680788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:29,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:29,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:29,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657985517] [2022-03-03 19:14:29,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:29,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:29,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:29,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:29,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:29,635 INFO L87 Difference]: Start difference. First operand 201 states and 603 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:29,758 INFO L93 Difference]: Finished difference Result 369 states and 1055 transitions. [2022-03-03 19:14:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:29,758 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:29,759 INFO L225 Difference]: With dead ends: 369 [2022-03-03 19:14:29,759 INFO L226 Difference]: Without dead ends: 363 [2022-03-03 19:14:29,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:14:29,759 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:29,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 82 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-03-03 19:14:29,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 198. [2022-03-03 19:14:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.0) internal successors, (591), 197 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 591 transitions. [2022-03-03 19:14:29,763 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 591 transitions. Word has length 19 [2022-03-03 19:14:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:29,763 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 591 transitions. [2022-03-03 19:14:29,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 591 transitions. [2022-03-03 19:14:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:29,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:29,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:29,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:29,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable368 [2022-03-03 19:14:29,968 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash 354900758, now seen corresponding path program 81 times [2022-03-03 19:14:29,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:29,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650688496] [2022-03-03 19:14:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:30,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650688496] [2022-03-03 19:14:30,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650688496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:30,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847098852] [2022-03-03 19:14:30,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:30,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:30,032 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:30,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-03-03 19:14:30,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:30,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:30,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:30,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847098852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:30,137 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:30,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 19:14:30,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473203148] [2022-03-03 19:14:30,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:30,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:14:30,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:14:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:30,138 INFO L87 Difference]: Start difference. First operand 198 states and 591 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:30,223 INFO L93 Difference]: Finished difference Result 357 states and 1013 transitions. [2022-03-03 19:14:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:30,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:30,224 INFO L225 Difference]: With dead ends: 357 [2022-03-03 19:14:30,224 INFO L226 Difference]: Without dead ends: 345 [2022-03-03 19:14:30,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:30,224 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:30,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 91 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-03-03 19:14:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 195. [2022-03-03 19:14:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.984536082474227) internal successors, (579), 194 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 579 transitions. [2022-03-03 19:14:30,227 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 579 transitions. Word has length 19 [2022-03-03 19:14:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:30,227 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 579 transitions. [2022-03-03 19:14:30,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 579 transitions. [2022-03-03 19:14:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:30,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:30,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:30,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:30,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable369 [2022-03-03 19:14:30,440 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash -607781832, now seen corresponding path program 79 times [2022-03-03 19:14:30,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:30,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108461739] [2022-03-03 19:14:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:30,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108461739] [2022-03-03 19:14:30,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108461739] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:30,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:30,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:30,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556751059] [2022-03-03 19:14:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:30,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:30,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:30,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:30,483 INFO L87 Difference]: Start difference. First operand 195 states and 579 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:30,563 INFO L93 Difference]: Finished difference Result 335 states and 937 transitions. [2022-03-03 19:14:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:30,563 INFO L225 Difference]: With dead ends: 335 [2022-03-03 19:14:30,563 INFO L226 Difference]: Without dead ends: 327 [2022-03-03 19:14:30,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:30,564 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:30,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 58 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-03 19:14:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 212. [2022-03-03 19:14:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.9668246445497632) internal successors, (626), 211 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 626 transitions. [2022-03-03 19:14:30,574 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 626 transitions. Word has length 19 [2022-03-03 19:14:30,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:30,574 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 626 transitions. [2022-03-03 19:14:30,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 626 transitions. [2022-03-03 19:14:30,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:30,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:30,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:30,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-03-03 19:14:30,575 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash 299879580, now seen corresponding path program 80 times [2022-03-03 19:14:30,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:30,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713252832] [2022-03-03 19:14:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:30,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713252832] [2022-03-03 19:14:30,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713252832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:30,631 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:30,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:30,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734849838] [2022-03-03 19:14:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:30,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:30,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:30,632 INFO L87 Difference]: Start difference. First operand 212 states and 626 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:30,735 INFO L93 Difference]: Finished difference Result 333 states and 932 transitions. [2022-03-03 19:14:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:30,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:30,736 INFO L225 Difference]: With dead ends: 333 [2022-03-03 19:14:30,736 INFO L226 Difference]: Without dead ends: 325 [2022-03-03 19:14:30,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:30,736 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:30,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 57 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-03 19:14:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 210. [2022-03-03 19:14:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9617224880382773) internal successors, (619), 209 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 619 transitions. [2022-03-03 19:14:30,739 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 619 transitions. Word has length 19 [2022-03-03 19:14:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:30,739 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 619 transitions. [2022-03-03 19:14:30,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 619 transitions. [2022-03-03 19:14:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:30,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:30,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:30,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-03-03 19:14:30,740 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1471716980, now seen corresponding path program 81 times [2022-03-03 19:14:30,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:30,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852303985] [2022-03-03 19:14:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:30,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852303985] [2022-03-03 19:14:30,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852303985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:30,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:30,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:30,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155068574] [2022-03-03 19:14:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:30,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:30,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:30,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:30,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:30,768 INFO L87 Difference]: Start difference. First operand 210 states and 619 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:30,852 INFO L93 Difference]: Finished difference Result 347 states and 973 transitions. [2022-03-03 19:14:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:30,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:30,853 INFO L225 Difference]: With dead ends: 347 [2022-03-03 19:14:30,853 INFO L226 Difference]: Without dead ends: 333 [2022-03-03 19:14:30,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:30,853 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:30,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 60 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-03-03 19:14:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 208. [2022-03-03 19:14:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9613526570048307) internal successors, (613), 207 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 613 transitions. [2022-03-03 19:14:30,856 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 613 transitions. Word has length 19 [2022-03-03 19:14:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:30,856 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 613 transitions. [2022-03-03 19:14:30,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 613 transitions. [2022-03-03 19:14:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:30,856 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:30,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:30,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-03-03 19:14:30,856 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1429007328, now seen corresponding path program 82 times [2022-03-03 19:14:30,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:30,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310568839] [2022-03-03 19:14:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:30,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310568839] [2022-03-03 19:14:30,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310568839] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:30,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804368629] [2022-03-03 19:14:30,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:30,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:30,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:30,900 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:30,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-03-03 19:14:30,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:30,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:30,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:30,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:31,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:31,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804368629] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:31,121 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:31,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:31,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687246177] [2022-03-03 19:14:31,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:31,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:31,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:31,122 INFO L87 Difference]: Start difference. First operand 208 states and 613 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:31,251 INFO L93 Difference]: Finished difference Result 421 states and 1188 transitions. [2022-03-03 19:14:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:31,251 INFO L225 Difference]: With dead ends: 421 [2022-03-03 19:14:31,252 INFO L226 Difference]: Without dead ends: 421 [2022-03-03 19:14:31,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:31,252 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 116 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:31,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 97 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-03-03 19:14:31,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 214. [2022-03-03 19:14:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.004694835680751) internal successors, (640), 213 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 640 transitions. [2022-03-03 19:14:31,255 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 640 transitions. Word has length 19 [2022-03-03 19:14:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:31,255 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 640 transitions. [2022-03-03 19:14:31,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 640 transitions. [2022-03-03 19:14:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:31,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:31,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:31,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:31,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:31,463 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1590227268, now seen corresponding path program 83 times [2022-03-03 19:14:31,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:31,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077886040] [2022-03-03 19:14:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:31,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:31,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077886040] [2022-03-03 19:14:31,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077886040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:31,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721224967] [2022-03-03 19:14:31,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:31,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:31,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:31,505 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:31,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-03-03 19:14:31,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:31,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:31,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:31,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:31,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:31,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721224967] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:31,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:31,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:31,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263033214] [2022-03-03 19:14:31,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:31,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:31,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:31,670 INFO L87 Difference]: Start difference. First operand 214 states and 640 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:31,765 INFO L93 Difference]: Finished difference Result 403 states and 1119 transitions. [2022-03-03 19:14:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:31,766 INFO L225 Difference]: With dead ends: 403 [2022-03-03 19:14:31,766 INFO L226 Difference]: Without dead ends: 397 [2022-03-03 19:14:31,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:31,766 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:31,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 75 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-03-03 19:14:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 217. [2022-03-03 19:14:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.9768518518518516) internal successors, (643), 216 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 643 transitions. [2022-03-03 19:14:31,769 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 643 transitions. Word has length 19 [2022-03-03 19:14:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:31,769 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 643 transitions. [2022-03-03 19:14:31,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 643 transitions. [2022-03-03 19:14:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:31,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:31,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:31,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2022-03-03 19:14:31,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:31,985 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:31,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1792350404, now seen corresponding path program 82 times [2022-03-03 19:14:31,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:31,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868128757] [2022-03-03 19:14:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:32,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:32,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868128757] [2022-03-03 19:14:32,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868128757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:32,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:32,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:32,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841993700] [2022-03-03 19:14:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:32,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:32,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:32,025 INFO L87 Difference]: Start difference. First operand 217 states and 643 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:32,112 INFO L93 Difference]: Finished difference Result 380 states and 1037 transitions. [2022-03-03 19:14:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:32,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:32,113 INFO L225 Difference]: With dead ends: 380 [2022-03-03 19:14:32,113 INFO L226 Difference]: Without dead ends: 372 [2022-03-03 19:14:32,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:32,113 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:32,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 50 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-03 19:14:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 227. [2022-03-03 19:14:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 3.0) internal successors, (678), 226 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 678 transitions. [2022-03-03 19:14:32,116 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 678 transitions. Word has length 19 [2022-03-03 19:14:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:32,117 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 678 transitions. [2022-03-03 19:14:32,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 678 transitions. [2022-03-03 19:14:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:32,117 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:32,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:32,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-03-03 19:14:32,117 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:32,117 INFO L85 PathProgramCache]: Analyzing trace with hash -884688992, now seen corresponding path program 83 times [2022-03-03 19:14:32,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:32,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262073885] [2022-03-03 19:14:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:32,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:32,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:32,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262073885] [2022-03-03 19:14:32,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262073885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:32,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:32,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:32,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771565503] [2022-03-03 19:14:32,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:32,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:32,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:32,158 INFO L87 Difference]: Start difference. First operand 227 states and 678 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:32,256 INFO L93 Difference]: Finished difference Result 386 states and 1052 transitions. [2022-03-03 19:14:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:32,257 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:14:32,257 INFO L226 Difference]: Without dead ends: 378 [2022-03-03 19:14:32,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:32,257 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:32,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 62 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-03-03 19:14:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 225. [2022-03-03 19:14:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.0089285714285716) internal successors, (674), 224 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 674 transitions. [2022-03-03 19:14:32,261 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 674 transitions. Word has length 19 [2022-03-03 19:14:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:32,261 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 674 transitions. [2022-03-03 19:14:32,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 674 transitions. [2022-03-03 19:14:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:32,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:32,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:32,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-03-03 19:14:32,262 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:32,262 INFO L85 PathProgramCache]: Analyzing trace with hash 211493554, now seen corresponding path program 84 times [2022-03-03 19:14:32,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:32,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962001739] [2022-03-03 19:14:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:32,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:32,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:32,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962001739] [2022-03-03 19:14:32,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962001739] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:32,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293002209] [2022-03-03 19:14:32,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:32,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:32,309 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:32,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-03-03 19:14:32,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:14:32,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:32,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:32,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:32,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:32,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293002209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:32,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:32,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:32,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578016271] [2022-03-03 19:14:32,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:32,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:32,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:32,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:32,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:32,546 INFO L87 Difference]: Start difference. First operand 225 states and 674 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:32,699 INFO L93 Difference]: Finished difference Result 367 states and 1038 transitions. [2022-03-03 19:14:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:32,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:32,700 INFO L225 Difference]: With dead ends: 367 [2022-03-03 19:14:32,700 INFO L226 Difference]: Without dead ends: 367 [2022-03-03 19:14:32,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:32,701 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:32,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 107 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-03 19:14:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 220. [2022-03-03 19:14:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9771689497716896) internal successors, (652), 219 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 652 transitions. [2022-03-03 19:14:32,704 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 652 transitions. Word has length 19 [2022-03-03 19:14:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:32,704 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 652 transitions. [2022-03-03 19:14:32,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 652 transitions. [2022-03-03 19:14:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:32,705 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:32,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:32,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Ended with exit code 0 [2022-03-03 19:14:32,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2022-03-03 19:14:32,908 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash -90863880, now seen corresponding path program 84 times [2022-03-03 19:14:32,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:32,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884488644] [2022-03-03 19:14:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:32,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:32,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884488644] [2022-03-03 19:14:32,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884488644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:32,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800885296] [2022-03-03 19:14:32,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:32,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:32,947 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:32,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-03-03 19:14:32,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:32,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:32,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:33,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:33,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800885296] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:33,145 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:33,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:33,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237034029] [2022-03-03 19:14:33,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:33,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:33,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:33,146 INFO L87 Difference]: Start difference. First operand 220 states and 652 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:33,250 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2022-03-03 19:14:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:33,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:33,251 INFO L225 Difference]: With dead ends: 334 [2022-03-03 19:14:33,251 INFO L226 Difference]: Without dead ends: 326 [2022-03-03 19:14:33,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:33,251 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:33,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 78 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-03 19:14:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 213. [2022-03-03 19:14:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9858490566037736) internal successors, (633), 212 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 633 transitions. [2022-03-03 19:14:33,254 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 633 transitions. Word has length 19 [2022-03-03 19:14:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:33,254 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 633 transitions. [2022-03-03 19:14:33,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 633 transitions. [2022-03-03 19:14:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:33,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:33,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:33,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Ended with exit code 0 [2022-03-03 19:14:33,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2022-03-03 19:14:33,463 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:33,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1276256854, now seen corresponding path program 85 times [2022-03-03 19:14:33,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:33,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871589897] [2022-03-03 19:14:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:33,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:33,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871589897] [2022-03-03 19:14:33,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871589897] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:33,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546594497] [2022-03-03 19:14:33,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:33,502 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:33,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-03-03 19:14:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:33,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:33,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:33,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:33,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546594497] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:33,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:33,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:33,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410305775] [2022-03-03 19:14:33,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:33,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:33,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:33,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:33,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:33,683 INFO L87 Difference]: Start difference. First operand 213 states and 633 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:33,796 INFO L93 Difference]: Finished difference Result 315 states and 891 transitions. [2022-03-03 19:14:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:33,797 INFO L225 Difference]: With dead ends: 315 [2022-03-03 19:14:33,797 INFO L226 Difference]: Without dead ends: 306 [2022-03-03 19:14:33,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:33,797 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:33,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 82 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-03-03 19:14:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 213. [2022-03-03 19:14:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.9669811320754715) internal successors, (629), 212 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 629 transitions. [2022-03-03 19:14:33,800 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 629 transitions. Word has length 19 [2022-03-03 19:14:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:33,800 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 629 transitions. [2022-03-03 19:14:33,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 629 transitions. [2022-03-03 19:14:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:33,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:33,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:33,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Ended with exit code 0 [2022-03-03 19:14:34,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:34,001 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:34,001 INFO L85 PathProgramCache]: Analyzing trace with hash -677911240, now seen corresponding path program 85 times [2022-03-03 19:14:34,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:34,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855337911] [2022-03-03 19:14:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:34,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:34,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:34,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855337911] [2022-03-03 19:14:34,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855337911] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:34,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386973548] [2022-03-03 19:14:34,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:34,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:34,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:34,048 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:34,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-03-03 19:14:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:34,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:14:34,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:34,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:34,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386973548] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:34,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:34,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-03 19:14:34,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417681011] [2022-03-03 19:14:34,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:34,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:14:34,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:14:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:34,264 INFO L87 Difference]: Start difference. First operand 213 states and 629 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:34,381 INFO L93 Difference]: Finished difference Result 302 states and 860 transitions. [2022-03-03 19:14:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:34,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:34,382 INFO L225 Difference]: With dead ends: 302 [2022-03-03 19:14:34,382 INFO L226 Difference]: Without dead ends: 302 [2022-03-03 19:14:34,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:14:34,382 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:34,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 84 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-03-03 19:14:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 209. [2022-03-03 19:14:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.9663461538461537) internal successors, (617), 208 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 617 transitions. [2022-03-03 19:14:34,385 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 617 transitions. Word has length 19 [2022-03-03 19:14:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:34,385 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 617 transitions. [2022-03-03 19:14:34,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 617 transitions. [2022-03-03 19:14:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:34,385 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:34,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:34,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:34,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2022-03-03 19:14:34,595 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash -337284394, now seen corresponding path program 86 times [2022-03-03 19:14:34,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:34,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388240771] [2022-03-03 19:14:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:34,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:34,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388240771] [2022-03-03 19:14:34,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388240771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:34,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:34,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:34,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110311055] [2022-03-03 19:14:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:34,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:34,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:34,636 INFO L87 Difference]: Start difference. First operand 209 states and 617 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:34,746 INFO L93 Difference]: Finished difference Result 353 states and 973 transitions. [2022-03-03 19:14:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:34,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:34,747 INFO L225 Difference]: With dead ends: 353 [2022-03-03 19:14:34,747 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:14:34,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:34,747 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:34,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 50 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:14:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 219. [2022-03-03 19:14:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 2.944954128440367) internal successors, (642), 218 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 642 transitions. [2022-03-03 19:14:34,750 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 642 transitions. Word has length 19 [2022-03-03 19:14:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:34,750 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 642 transitions. [2022-03-03 19:14:34,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 642 transitions. [2022-03-03 19:14:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:34,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:34,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:34,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-03-03 19:14:34,751 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:34,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1669838332, now seen corresponding path program 87 times [2022-03-03 19:14:34,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:34,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913584676] [2022-03-03 19:14:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:34,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:34,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:34,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913584676] [2022-03-03 19:14:34,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913584676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:34,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:34,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:34,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210454218] [2022-03-03 19:14:34,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:34,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:34,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:34,794 INFO L87 Difference]: Start difference. First operand 219 states and 642 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:34,902 INFO L93 Difference]: Finished difference Result 317 states and 890 transitions. [2022-03-03 19:14:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:34,902 INFO L225 Difference]: With dead ends: 317 [2022-03-03 19:14:34,902 INFO L226 Difference]: Without dead ends: 306 [2022-03-03 19:14:34,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:34,903 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:34,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 49 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-03-03 19:14:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 209. [2022-03-03 19:14:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.9615384615384617) internal successors, (616), 208 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 616 transitions. [2022-03-03 19:14:34,905 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 616 transitions. Word has length 19 [2022-03-03 19:14:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:34,905 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 616 transitions. [2022-03-03 19:14:34,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 616 transitions. [2022-03-03 19:14:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:34,906 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:34,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:34,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-03-03 19:14:34,906 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash -255395300, now seen corresponding path program 86 times [2022-03-03 19:14:34,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:34,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736910261] [2022-03-03 19:14:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:34,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:34,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736910261] [2022-03-03 19:14:34,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736910261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:34,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:34,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:34,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840175332] [2022-03-03 19:14:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:34,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:34,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:34,960 INFO L87 Difference]: Start difference. First operand 209 states and 616 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,065 INFO L93 Difference]: Finished difference Result 353 states and 981 transitions. [2022-03-03 19:14:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,067 INFO L225 Difference]: With dead ends: 353 [2022-03-03 19:14:35,067 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:14:35,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:35,067 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 67 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:14:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 221. [2022-03-03 19:14:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9681818181818183) internal successors, (653), 220 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 653 transitions. [2022-03-03 19:14:35,070 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 653 transitions. Word has length 19 [2022-03-03 19:14:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,070 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 653 transitions. [2022-03-03 19:14:35,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 653 transitions. [2022-03-03 19:14:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-03-03 19:14:35,071 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1877701344, now seen corresponding path program 87 times [2022-03-03 19:14:35,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698365139] [2022-03-03 19:14:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698365139] [2022-03-03 19:14:35,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698365139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,118 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769725076] [2022-03-03 19:14:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,119 INFO L87 Difference]: Start difference. First operand 221 states and 653 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,230 INFO L93 Difference]: Finished difference Result 331 states and 944 transitions. [2022-03-03 19:14:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,231 INFO L225 Difference]: With dead ends: 331 [2022-03-03 19:14:35,231 INFO L226 Difference]: Without dead ends: 331 [2022-03-03 19:14:35,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:35,231 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 69 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-03-03 19:14:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 208. [2022-03-03 19:14:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9613526570048307) internal successors, (613), 207 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 613 transitions. [2022-03-03 19:14:35,234 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 613 transitions. Word has length 19 [2022-03-03 19:14:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,234 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 613 transitions. [2022-03-03 19:14:35,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 613 transitions. [2022-03-03 19:14:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-03-03 19:14:35,235 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 541424188, now seen corresponding path program 88 times [2022-03-03 19:14:35,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336585929] [2022-03-03 19:14:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336585929] [2022-03-03 19:14:35,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336585929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287727286] [2022-03-03 19:14:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,267 INFO L87 Difference]: Start difference. First operand 208 states and 613 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,379 INFO L93 Difference]: Finished difference Result 292 states and 822 transitions. [2022-03-03 19:14:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,379 INFO L225 Difference]: With dead ends: 292 [2022-03-03 19:14:35,379 INFO L226 Difference]: Without dead ends: 280 [2022-03-03 19:14:35,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:35,380 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 56 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-03 19:14:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 210. [2022-03-03 19:14:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.9473684210526314) internal successors, (616), 209 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 616 transitions. [2022-03-03 19:14:35,382 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 616 transitions. Word has length 19 [2022-03-03 19:14:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,382 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 616 transitions. [2022-03-03 19:14:35,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 616 transitions. [2022-03-03 19:14:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-03-03 19:14:35,383 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1822373720, now seen corresponding path program 89 times [2022-03-03 19:14:35,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592956436] [2022-03-03 19:14:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592956436] [2022-03-03 19:14:35,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592956436] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371234626] [2022-03-03 19:14:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,417 INFO L87 Difference]: Start difference. First operand 210 states and 616 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,536 INFO L93 Difference]: Finished difference Result 280 states and 784 transitions. [2022-03-03 19:14:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,537 INFO L225 Difference]: With dead ends: 280 [2022-03-03 19:14:35,537 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 19:14:35,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:35,537 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 52 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 19:14:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 220. [2022-03-03 19:14:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9269406392694064) internal successors, (641), 219 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 641 transitions. [2022-03-03 19:14:35,539 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 641 transitions. Word has length 19 [2022-03-03 19:14:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,539 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 641 transitions. [2022-03-03 19:14:35,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 641 transitions. [2022-03-03 19:14:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-03-03 19:14:35,540 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1140039638, now seen corresponding path program 90 times [2022-03-03 19:14:35,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539459941] [2022-03-03 19:14:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539459941] [2022-03-03 19:14:35,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539459941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140682655] [2022-03-03 19:14:35,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,573 INFO L87 Difference]: Start difference. First operand 220 states and 641 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,671 INFO L93 Difference]: Finished difference Result 244 states and 701 transitions. [2022-03-03 19:14:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,672 INFO L225 Difference]: With dead ends: 244 [2022-03-03 19:14:35,672 INFO L226 Difference]: Without dead ends: 231 [2022-03-03 19:14:35,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:14:35,672 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 40 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:14:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-03-03 19:14:35,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 208. [2022-03-03 19:14:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9565217391304346) internal successors, (612), 207 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 612 transitions. [2022-03-03 19:14:35,674 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 612 transitions. Word has length 19 [2022-03-03 19:14:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,674 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 612 transitions. [2022-03-03 19:14:35,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 612 transitions. [2022-03-03 19:14:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,674 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-03-03 19:14:35,675 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash 856518288, now seen corresponding path program 88 times [2022-03-03 19:14:35,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339163537] [2022-03-03 19:14:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339163537] [2022-03-03 19:14:35,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339163537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412066992] [2022-03-03 19:14:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,707 INFO L87 Difference]: Start difference. First operand 208 states and 612 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,788 INFO L93 Difference]: Finished difference Result 277 states and 780 transitions. [2022-03-03 19:14:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,789 INFO L225 Difference]: With dead ends: 277 [2022-03-03 19:14:35,789 INFO L226 Difference]: Without dead ends: 265 [2022-03-03 19:14:35,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:35,789 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 48 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-03-03 19:14:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 208. [2022-03-03 19:14:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9516908212560384) internal successors, (611), 207 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 611 transitions. [2022-03-03 19:14:35,792 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 611 transitions. Word has length 19 [2022-03-03 19:14:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,792 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 611 transitions. [2022-03-03 19:14:35,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 611 transitions. [2022-03-03 19:14:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,793 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-03-03 19:14:35,793 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1952640244, now seen corresponding path program 89 times [2022-03-03 19:14:35,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210907842] [2022-03-03 19:14:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210907842] [2022-03-03 19:14:35,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210907842] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486903636] [2022-03-03 19:14:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,831 INFO L87 Difference]: Start difference. First operand 208 states and 611 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:35,923 INFO L93 Difference]: Finished difference Result 281 states and 792 transitions. [2022-03-03 19:14:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:35,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:35,924 INFO L225 Difference]: With dead ends: 281 [2022-03-03 19:14:35,924 INFO L226 Difference]: Without dead ends: 275 [2022-03-03 19:14:35,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:35,924 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:35,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 47 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-03-03 19:14:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 214. [2022-03-03 19:14:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.9342723004694835) internal successors, (625), 213 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 625 transitions. [2022-03-03 19:14:35,926 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 625 transitions. Word has length 19 [2022-03-03 19:14:35,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:35,926 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 625 transitions. [2022-03-03 19:14:35,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 625 transitions. [2022-03-03 19:14:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 19:14:35,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:35,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:35,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-03-03 19:14:35,927 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash 180456400, now seen corresponding path program 90 times [2022-03-03 19:14:35,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:35,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309353550] [2022-03-03 19:14:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:35,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:35,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309353550] [2022-03-03 19:14:35,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309353550] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:14:35,971 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:14:35,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 19:14:35,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805004713] [2022-03-03 19:14:35,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:14:35,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:14:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:14:35,972 INFO L87 Difference]: Start difference. First operand 214 states and 625 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:36,075 INFO L93 Difference]: Finished difference Result 246 states and 717 transitions. [2022-03-03 19:14:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:14:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 19:14:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:36,076 INFO L225 Difference]: With dead ends: 246 [2022-03-03 19:14:36,076 INFO L226 Difference]: Without dead ends: 246 [2022-03-03 19:14:36,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:14:36,076 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:36,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 49 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:14:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-03-03 19:14:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 189. [2022-03-03 19:14:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (549), 188 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2022-03-03 19:14:36,078 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 19 [2022-03-03 19:14:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:36,078 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2022-03-03 19:14:36,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2022-03-03 19:14:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:36,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:36,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:36,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-03-03 19:14:36,079 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1960611379, now seen corresponding path program 1 times [2022-03-03 19:14:36,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:36,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464112425] [2022-03-03 19:14:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:36,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:36,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:36,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464112425] [2022-03-03 19:14:36,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464112425] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:36,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326840607] [2022-03-03 19:14:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:36,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:36,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:36,721 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:36,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-03-03 19:14:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:36,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:14:36,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:37,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:37,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:14:38,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:38,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 191 [2022-03-03 19:14:38,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 161 [2022-03-03 19:14:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:39,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:40,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:40,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-03-03 19:14:41,142 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:41,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:14:41,149 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:41,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:14:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:41,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326840607] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:41,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:41,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:41,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226646586] [2022-03-03 19:14:41,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:41,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:41,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:41,214 INFO L87 Difference]: Start difference. First operand 189 states and 549 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:41,467 INFO L93 Difference]: Finished difference Result 409 states and 1157 transitions. [2022-03-03 19:14:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:14:41,467 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:14:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:41,468 INFO L225 Difference]: With dead ends: 409 [2022-03-03 19:14:41,468 INFO L226 Difference]: Without dead ends: 406 [2022-03-03 19:14:41,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:14:41,469 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 88 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:41,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 299 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 273 Invalid, 0 Unknown, 342 Unchecked, 0.1s Time] [2022-03-03 19:14:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-03-03 19:14:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 205. [2022-03-03 19:14:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.877450980392157) internal successors, (587), 204 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 587 transitions. [2022-03-03 19:14:41,473 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 587 transitions. Word has length 20 [2022-03-03 19:14:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:41,473 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 587 transitions. [2022-03-03 19:14:41,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 587 transitions. [2022-03-03 19:14:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:41,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:41,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:41,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:41,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:41,674 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2145398797, now seen corresponding path program 2 times [2022-03-03 19:14:41,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:41,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797061736] [2022-03-03 19:14:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:42,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:42,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797061736] [2022-03-03 19:14:42,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797061736] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:42,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223425915] [2022-03-03 19:14:42,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:42,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:42,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:42,006 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:42,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-03-03 19:14:42,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:42,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:42,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:14:42,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:42,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:14:42,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 183 [2022-03-03 19:14:42,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-03-03 19:14:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:43,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:44,897 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:44,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-03-03 19:14:45,372 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:45,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:14:45,378 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:45,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:14:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:45,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223425915] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:45,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:45,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:45,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300328286] [2022-03-03 19:14:45,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:45,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:45,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:45,429 INFO L87 Difference]: Start difference. First operand 205 states and 587 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:49,305 INFO L93 Difference]: Finished difference Result 523 states and 1427 transitions. [2022-03-03 19:14:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:14:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:14:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:49,306 INFO L225 Difference]: With dead ends: 523 [2022-03-03 19:14:49,306 INFO L226 Difference]: Without dead ends: 493 [2022-03-03 19:14:49,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=277, Invalid=1445, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:14:49,306 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 218 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:49,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 409 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1093 Invalid, 0 Unknown, 77 Unchecked, 0.6s Time] [2022-03-03 19:14:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-03 19:14:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 217. [2022-03-03 19:14:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.861111111111111) internal successors, (618), 216 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 618 transitions. [2022-03-03 19:14:49,310 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 618 transitions. Word has length 20 [2022-03-03 19:14:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:49,310 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 618 transitions. [2022-03-03 19:14:49,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 618 transitions. [2022-03-03 19:14:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:49,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:49,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:49,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:49,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392,203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:49,518 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash -829366387, now seen corresponding path program 3 times [2022-03-03 19:14:49,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:49,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818661419] [2022-03-03 19:14:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:49,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:49,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818661419] [2022-03-03 19:14:49,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818661419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:49,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491889486] [2022-03-03 19:14:49,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:49,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:49,932 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:49,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-03-03 19:14:49,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:14:49,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:49,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:14:49,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:50,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:14:50,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:14:50,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:14:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:51,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:52,268 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:52,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 133 [2022-03-03 19:14:52,648 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:52,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:14:52,654 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:52,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:14:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:52,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491889486] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:52,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:52,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:52,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082204452] [2022-03-03 19:14:52,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:52,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:52,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:52,713 INFO L87 Difference]: Start difference. First operand 217 states and 618 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:57,236 INFO L93 Difference]: Finished difference Result 617 states and 1637 transitions. [2022-03-03 19:14:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:14:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:14:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:57,237 INFO L225 Difference]: With dead ends: 617 [2022-03-03 19:14:57,237 INFO L226 Difference]: Without dead ends: 587 [2022-03-03 19:14:57,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:14:57,237 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 378 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:57,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 401 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1146 Invalid, 0 Unknown, 4 Unchecked, 0.7s Time] [2022-03-03 19:14:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-03-03 19:14:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 223. [2022-03-03 19:14:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.8963963963963963) internal successors, (643), 222 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 643 transitions. [2022-03-03 19:14:57,241 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 643 transitions. Word has length 20 [2022-03-03 19:14:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:57,241 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 643 transitions. [2022-03-03 19:14:57,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 643 transitions. [2022-03-03 19:14:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:57,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:57,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:57,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:57,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:57,442 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash -806769839, now seen corresponding path program 4 times [2022-03-03 19:14:57,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:57,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58497274] [2022-03-03 19:14:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:58,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:58,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58497274] [2022-03-03 19:14:58,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58497274] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:58,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088525941] [2022-03-03 19:14:58,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:58,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:58,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:58,095 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:14:58,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:58,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:58,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-03-03 19:14:58,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 19:14:58,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:58,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:58,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2022-03-03 19:15:00,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:00,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 268 [2022-03-03 19:15:00,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 228 [2022-03-03 19:15:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:03,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:04,237 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:04,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 213 [2022-03-03 19:15:05,336 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:05,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 98 [2022-03-03 19:15:05,341 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:05,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:15:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:05,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088525941] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:05,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:05,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:05,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47409315] [2022-03-03 19:15:05,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:05,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:05,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:05,405 INFO L87 Difference]: Start difference. First operand 223 states and 643 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:11,618 INFO L93 Difference]: Finished difference Result 732 states and 1967 transitions. [2022-03-03 19:15:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 19:15:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:11,620 INFO L225 Difference]: With dead ends: 732 [2022-03-03 19:15:11,620 INFO L226 Difference]: Without dead ends: 700 [2022-03-03 19:15:11,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=276, Invalid=1704, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:15:11,620 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 163 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:11,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 423 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 463 Invalid, 0 Unknown, 205 Unchecked, 0.4s Time] [2022-03-03 19:15:11,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-03-03 19:15:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 235. [2022-03-03 19:15:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.9188034188034186) internal successors, (683), 234 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 683 transitions. [2022-03-03 19:15:11,625 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 683 transitions. Word has length 20 [2022-03-03 19:15:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:11,625 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 683 transitions. [2022-03-03 19:15:11,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 683 transitions. [2022-03-03 19:15:11,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:11,626 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:11,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:11,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2022-03-03 19:15:11,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394,205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:11,835 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash -235315033, now seen corresponding path program 5 times [2022-03-03 19:15:11,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:11,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038804737] [2022-03-03 19:15:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:12,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:12,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038804737] [2022-03-03 19:15:12,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038804737] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:12,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764953002] [2022-03-03 19:15:12,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:15:12,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:12,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:12,336 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:12,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-03-03 19:15:12,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:12,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:12,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:15:12,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:12,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:15:13,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 143 [2022-03-03 19:15:13,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 119 [2022-03-03 19:15:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:13,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:14,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:14,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 110 [2022-03-03 19:15:14,860 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:15:14,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-03-03 19:15:14,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-03-03 19:15:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:14,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764953002] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:14,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:14,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:15:14,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676700728] [2022-03-03 19:15:14,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:14,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:15:14,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:15:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:15:14,870 INFO L87 Difference]: Start difference. First operand 235 states and 683 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:18,392 INFO L93 Difference]: Finished difference Result 575 states and 1567 transitions. [2022-03-03 19:15:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:15:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:18,393 INFO L225 Difference]: With dead ends: 575 [2022-03-03 19:15:18,393 INFO L226 Difference]: Without dead ends: 545 [2022-03-03 19:15:18,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:15:18,394 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 255 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:18,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 401 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:15:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-03-03 19:15:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 235. [2022-03-03 19:15:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.9188034188034186) internal successors, (683), 234 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 683 transitions. [2022-03-03 19:15:18,397 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 683 transitions. Word has length 20 [2022-03-03 19:15:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:18,397 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 683 transitions. [2022-03-03 19:15:18,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 683 transitions. [2022-03-03 19:15:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:18,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:18,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:18,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Ended with exit code 0 [2022-03-03 19:15:18,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:18,607 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 113019597, now seen corresponding path program 6 times [2022-03-03 19:15:18,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:18,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479217525] [2022-03-03 19:15:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:19,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:19,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479217525] [2022-03-03 19:15:19,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479217525] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:19,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645618893] [2022-03-03 19:15:19,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:15:19,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:19,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:19,122 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:19,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-03-03 19:15:19,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:15:19,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:19,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:15:19,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:19,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:19,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2022-03-03 19:15:20,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:20,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 226 [2022-03-03 19:15:20,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 194 [2022-03-03 19:15:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:21,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:22,525 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:22,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 258 [2022-03-03 19:15:23,354 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:23,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:15:23,359 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:23,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:15:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:23,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645618893] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:23,426 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:23,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:23,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911235660] [2022-03-03 19:15:23,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:23,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:23,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:23,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:23,427 INFO L87 Difference]: Start difference. First operand 235 states and 683 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:23,759 INFO L93 Difference]: Finished difference Result 399 states and 1147 transitions. [2022-03-03 19:15:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:15:23,760 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:23,760 INFO L225 Difference]: With dead ends: 399 [2022-03-03 19:15:23,760 INFO L226 Difference]: Without dead ends: 392 [2022-03-03 19:15:23,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:15:23,761 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:23,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 335 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2022-03-03 19:15:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-03 19:15:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 239. [2022-03-03 19:15:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 2.903361344537815) internal successors, (691), 238 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 691 transitions. [2022-03-03 19:15:23,763 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 691 transitions. Word has length 20 [2022-03-03 19:15:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:23,764 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 691 transitions. [2022-03-03 19:15:23,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 691 transitions. [2022-03-03 19:15:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:23,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:23,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:23,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable396 [2022-03-03 19:15:23,971 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445559, now seen corresponding path program 7 times [2022-03-03 19:15:23,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:23,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406747266] [2022-03-03 19:15:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:24,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:24,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406747266] [2022-03-03 19:15:24,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406747266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:24,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421075454] [2022-03-03 19:15:24,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:15:24,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:24,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:24,422 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:24,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-03-03 19:15:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:24,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:15:24,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:25,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:25,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:15:25,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:25,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 195 [2022-03-03 19:15:25,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 167 [2022-03-03 19:15:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:26,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:27,819 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:27,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 145 [2022-03-03 19:15:28,540 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:28,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:15:28,546 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:28,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:15:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:28,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421075454] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:28,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:28,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:28,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797273446] [2022-03-03 19:15:28,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:28,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:28,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:28,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:28,630 INFO L87 Difference]: Start difference. First operand 239 states and 691 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:29,877 INFO L93 Difference]: Finished difference Result 429 states and 1218 transitions. [2022-03-03 19:15:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:15:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:29,878 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:15:29,878 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:15:29,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:15:29,879 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 94 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:29,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 252 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 362 Invalid, 0 Unknown, 169 Unchecked, 0.2s Time] [2022-03-03 19:15:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:15:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 248. [2022-03-03 19:15:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.902834008097166) internal successors, (717), 247 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 717 transitions. [2022-03-03 19:15:29,882 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 717 transitions. Word has length 20 [2022-03-03 19:15:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:29,882 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 717 transitions. [2022-03-03 19:15:29,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 717 transitions. [2022-03-03 19:15:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:29,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:29,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:29,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Ended with exit code 0 [2022-03-03 19:15:30,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable397 [2022-03-03 19:15:30,083 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1858849011, now seen corresponding path program 8 times [2022-03-03 19:15:30,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:30,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998137572] [2022-03-03 19:15:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:30,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:30,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998137572] [2022-03-03 19:15:30,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998137572] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:30,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062520110] [2022-03-03 19:15:30,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:30,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:30,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:30,405 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:30,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-03-03 19:15:30,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:30,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:30,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:15:30,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:30,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:30,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:15:31,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:31,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 175 [2022-03-03 19:15:31,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 147 [2022-03-03 19:15:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:31,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:32,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:32,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 138 [2022-03-03 19:15:32,695 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:32,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:15:32,699 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:32,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:15:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:32,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062520110] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:32,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:32,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:32,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800460033] [2022-03-03 19:15:32,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:32,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:32,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:32,747 INFO L87 Difference]: Start difference. First operand 248 states and 717 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:33,109 INFO L93 Difference]: Finished difference Result 447 states and 1252 transitions. [2022-03-03 19:15:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:15:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:33,110 INFO L225 Difference]: With dead ends: 447 [2022-03-03 19:15:33,110 INFO L226 Difference]: Without dead ends: 440 [2022-03-03 19:15:33,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:15:33,111 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:33,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 280 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 398 Invalid, 0 Unknown, 215 Unchecked, 0.1s Time] [2022-03-03 19:15:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-03 19:15:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 260. [2022-03-03 19:15:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.888030888030888) internal successors, (748), 259 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 748 transitions. [2022-03-03 19:15:33,114 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 748 transitions. Word has length 20 [2022-03-03 19:15:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:33,114 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 748 transitions. [2022-03-03 19:15:33,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 748 transitions. [2022-03-03 19:15:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:33,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:33,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:33,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:33,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable398 [2022-03-03 19:15:33,331 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash 264725201, now seen corresponding path program 9 times [2022-03-03 19:15:33,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:33,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906109915] [2022-03-03 19:15:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:33,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:33,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:33,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906109915] [2022-03-03 19:15:33,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906109915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:33,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098877519] [2022-03-03 19:15:33,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:33,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:33,604 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:33,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-03-03 19:15:33,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:15:33,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:33,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:15:33,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:34,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:34,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:15:34,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:34,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 208 [2022-03-03 19:15:34,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 180 [2022-03-03 19:15:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:35,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:36,415 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:36,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 136 [2022-03-03 19:15:36,858 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:36,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 98 [2022-03-03 19:15:36,865 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:36,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:15:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:36,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098877519] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:36,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:36,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 28 [2022-03-03 19:15:36,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162689027] [2022-03-03 19:15:36,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:36,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:15:36,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:15:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:15:36,949 INFO L87 Difference]: Start difference. First operand 260 states and 748 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:38,542 INFO L93 Difference]: Finished difference Result 445 states and 1253 transitions. [2022-03-03 19:15:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:15:38,542 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:38,543 INFO L225 Difference]: With dead ends: 445 [2022-03-03 19:15:38,543 INFO L226 Difference]: Without dead ends: 438 [2022-03-03 19:15:38,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:15:38,543 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 70 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:38,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 295 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 340 Invalid, 0 Unknown, 86 Unchecked, 0.2s Time] [2022-03-03 19:15:38,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-03-03 19:15:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 261. [2022-03-03 19:15:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.8884615384615384) internal successors, (751), 260 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 751 transitions. [2022-03-03 19:15:38,547 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 751 transitions. Word has length 20 [2022-03-03 19:15:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:38,547 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 751 transitions. [2022-03-03 19:15:38,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 751 transitions. [2022-03-03 19:15:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:38,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:38,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:38,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:38,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable399 [2022-03-03 19:15:38,748 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:38,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 287321749, now seen corresponding path program 10 times [2022-03-03 19:15:38,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:38,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071105761] [2022-03-03 19:15:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:39,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:39,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071105761] [2022-03-03 19:15:39,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071105761] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:39,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216689473] [2022-03-03 19:15:39,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:15:39,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:39,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:39,207 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:39,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-03-03 19:15:39,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:15:39,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:39,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:15:39,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:39,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:39,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:15:40,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:40,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 194 [2022-03-03 19:15:40,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 164 [2022-03-03 19:15:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:40,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:41,252 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:41,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 136 [2022-03-03 19:15:41,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:41,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:15:41,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:41,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:15:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:41,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216689473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:41,639 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:41,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:41,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285417291] [2022-03-03 19:15:41,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:41,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:41,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:41,640 INFO L87 Difference]: Start difference. First operand 261 states and 751 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:42,377 INFO L93 Difference]: Finished difference Result 459 states and 1285 transitions. [2022-03-03 19:15:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:15:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:42,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:42,378 INFO L225 Difference]: With dead ends: 459 [2022-03-03 19:15:42,378 INFO L226 Difference]: Without dead ends: 452 [2022-03-03 19:15:42,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:15:42,378 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:42,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 369 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 419 Invalid, 0 Unknown, 434 Unchecked, 0.2s Time] [2022-03-03 19:15:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-03-03 19:15:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 269. [2022-03-03 19:15:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 2.876865671641791) internal successors, (771), 268 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 771 transitions. [2022-03-03 19:15:42,382 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 771 transitions. Word has length 20 [2022-03-03 19:15:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:42,382 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 771 transitions. [2022-03-03 19:15:42,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 771 transitions. [2022-03-03 19:15:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:42,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:42,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:42,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Ended with exit code 0 [2022-03-03 19:15:42,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2022-03-03 19:15:42,585 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:42,586 INFO L85 PathProgramCache]: Analyzing trace with hash 858776555, now seen corresponding path program 11 times [2022-03-03 19:15:42,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:42,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431071326] [2022-03-03 19:15:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:42,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:42,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:42,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431071326] [2022-03-03 19:15:42,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431071326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:42,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543030142] [2022-03-03 19:15:42,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:15:42,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:42,971 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:42,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-03-03 19:15:43,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:43,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:43,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:15:43,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:43,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:15:43,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-03-03 19:15:43,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 111 [2022-03-03 19:15:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:44,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:44,735 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:44,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 109 [2022-03-03 19:15:45,072 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:15:45,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:15:45,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:15:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:45,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543030142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:45,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:45,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:15:45,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717201706] [2022-03-03 19:15:45,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:45,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:15:45,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:15:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:15:45,082 INFO L87 Difference]: Start difference. First operand 269 states and 771 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:46,693 INFO L93 Difference]: Finished difference Result 527 states and 1444 transitions. [2022-03-03 19:15:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:15:46,693 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:46,694 INFO L225 Difference]: With dead ends: 527 [2022-03-03 19:15:46,694 INFO L226 Difference]: Without dead ends: 513 [2022-03-03 19:15:46,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=262, Invalid=1460, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:15:46,694 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 205 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:46,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 320 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 813 Invalid, 0 Unknown, 60 Unchecked, 0.4s Time] [2022-03-03 19:15:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-03-03 19:15:46,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 283. [2022-03-03 19:15:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.8865248226950353) internal successors, (814), 282 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 814 transitions. [2022-03-03 19:15:46,698 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 814 transitions. Word has length 20 [2022-03-03 19:15:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:46,698 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 814 transitions. [2022-03-03 19:15:46,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 814 transitions. [2022-03-03 19:15:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:46,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:46,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:46,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2022-03-03 19:15:46,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:46,911 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1284001523, now seen corresponding path program 12 times [2022-03-03 19:15:46,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:46,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195412263] [2022-03-03 19:15:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:47,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:47,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195412263] [2022-03-03 19:15:47,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195412263] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:47,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119799802] [2022-03-03 19:15:47,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:15:47,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:47,379 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:47,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-03-03 19:15:47,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:15:47,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:47,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:15:47,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:47,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:47,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:15:49,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:49,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 155 [2022-03-03 19:15:49,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 131 [2022-03-03 19:15:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:49,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:50,791 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:50,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 166 [2022-03-03 19:15:51,436 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:51,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:15:51,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:51,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:15:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:51,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119799802] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:51,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:51,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:51,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559553881] [2022-03-03 19:15:51,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:51,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:51,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:51,535 INFO L87 Difference]: Start difference. First operand 283 states and 814 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:52,536 INFO L93 Difference]: Finished difference Result 537 states and 1532 transitions. [2022-03-03 19:15:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:15:52,536 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:52,537 INFO L225 Difference]: With dead ends: 537 [2022-03-03 19:15:52,537 INFO L226 Difference]: Without dead ends: 530 [2022-03-03 19:15:52,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:15:52,538 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 511 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:52,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 414 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 511 Unchecked, 0.2s Time] [2022-03-03 19:15:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-03-03 19:15:52,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 287. [2022-03-03 19:15:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.874125874125874) internal successors, (822), 286 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 822 transitions. [2022-03-03 19:15:52,541 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 822 transitions. Word has length 20 [2022-03-03 19:15:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:52,541 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 822 transitions. [2022-03-03 19:15:52,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 822 transitions. [2022-03-03 19:15:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:52,542 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:52,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:52,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Ended with exit code 0 [2022-03-03 19:15:52,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402,213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:52,751 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1459874991, now seen corresponding path program 13 times [2022-03-03 19:15:52,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:52,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063454826] [2022-03-03 19:15:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:53,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:53,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063454826] [2022-03-03 19:15:53,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063454826] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:53,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513260218] [2022-03-03 19:15:53,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:15:53,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:53,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:53,286 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:53,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-03-03 19:15:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:53,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:15:53,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:53,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:53,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:15:54,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:54,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-03-03 19:15:54,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-03-03 19:15:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:55,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:56,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:56,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 147 [2022-03-03 19:15:57,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:57,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:15:57,117 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:57,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:15:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:57,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513260218] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:57,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:57,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:57,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039121014] [2022-03-03 19:15:57,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:57,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:57,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:57,156 INFO L87 Difference]: Start difference. First operand 287 states and 822 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:58,024 INFO L93 Difference]: Finished difference Result 627 states and 1817 transitions. [2022-03-03 19:15:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:15:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:15:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:58,026 INFO L225 Difference]: With dead ends: 627 [2022-03-03 19:15:58,026 INFO L226 Difference]: Without dead ends: 613 [2022-03-03 19:15:58,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:15:58,026 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 80 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 445 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:58,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 483 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 416 Invalid, 0 Unknown, 445 Unchecked, 0.2s Time] [2022-03-03 19:15:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-03-03 19:15:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 290. [2022-03-03 19:15:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.8719723183391004) internal successors, (830), 289 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 830 transitions. [2022-03-03 19:15:58,030 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 830 transitions. Word has length 20 [2022-03-03 19:15:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:58,030 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 830 transitions. [2022-03-03 19:15:58,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 830 transitions. [2022-03-03 19:15:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:58,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:58,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:58,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:58,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2022-03-03 19:15:58,238 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash 840627149, now seen corresponding path program 14 times [2022-03-03 19:15:58,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:58,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648030288] [2022-03-03 19:15:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:58,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:58,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:58,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648030288] [2022-03-03 19:15:58,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648030288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:58,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550374663] [2022-03-03 19:15:58,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:58,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:58,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:58,528 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:58,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-03-03 19:15:58,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:58,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:58,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:15:58,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:58,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:58,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:15:59,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:59,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 185 [2022-03-03 19:15:59,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 155 [2022-03-03 19:15:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:59,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:00,640 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:00,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-03-03 19:16:00,885 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:00,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:00,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:00,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:00,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550374663] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:00,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:00,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:00,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773426633] [2022-03-03 19:16:00,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:00,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:00,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:00,939 INFO L87 Difference]: Start difference. First operand 290 states and 830 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:01,283 INFO L93 Difference]: Finished difference Result 481 states and 1377 transitions. [2022-03-03 19:16:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:01,284 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:01,284 INFO L225 Difference]: With dead ends: 481 [2022-03-03 19:16:01,284 INFO L226 Difference]: Without dead ends: 474 [2022-03-03 19:16:01,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:16:01,285 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 67 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:01,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 252 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 364 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-03-03 19:16:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-03 19:16:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 293. [2022-03-03 19:16:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.8698630136986303) internal successors, (838), 292 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 838 transitions. [2022-03-03 19:16:01,288 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 838 transitions. Word has length 20 [2022-03-03 19:16:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:01,288 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 838 transitions. [2022-03-03 19:16:01,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 838 transitions. [2022-03-03 19:16:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:01,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:01,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:01,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:01,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2022-03-03 19:16:01,503 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash 863223697, now seen corresponding path program 15 times [2022-03-03 19:16:01,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:01,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668713250] [2022-03-03 19:16:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:02,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:02,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668713250] [2022-03-03 19:16:02,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668713250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:02,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224311394] [2022-03-03 19:16:02,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:16:02,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:02,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:02,166 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:02,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-03-03 19:16:02,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:16:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:02,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:02,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:02,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:02,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:16:03,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:03,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:16:03,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:16:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:03,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:04,695 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:04,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2022-03-03 19:16:05,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:05,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:05,073 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:05,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:05,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224311394] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:05,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:05,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:05,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228146021] [2022-03-03 19:16:05,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:05,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:05,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:05,139 INFO L87 Difference]: Start difference. First operand 293 states and 838 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:06,216 INFO L93 Difference]: Finished difference Result 472 states and 1365 transitions. [2022-03-03 19:16:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:06,217 INFO L225 Difference]: With dead ends: 472 [2022-03-03 19:16:06,217 INFO L226 Difference]: Without dead ends: 465 [2022-03-03 19:16:06,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:06,217 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 61 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:06,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 348 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 398 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-03-03 19:16:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-03-03 19:16:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 292. [2022-03-03 19:16:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.8694158075601375) internal successors, (835), 291 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 835 transitions. [2022-03-03 19:16:06,221 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 835 transitions. Word has length 20 [2022-03-03 19:16:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:06,221 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 835 transitions. [2022-03-03 19:16:06,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 835 transitions. [2022-03-03 19:16:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:06,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:06,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:06,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Ended with exit code 0 [2022-03-03 19:16:06,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:06,429 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1153255395, now seen corresponding path program 16 times [2022-03-03 19:16:06,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:06,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420151958] [2022-03-03 19:16:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:06,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:06,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420151958] [2022-03-03 19:16:06,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420151958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:06,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952532064] [2022-03-03 19:16:06,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:06,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:06,872 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:06,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-03-03 19:16:06,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:06,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:06,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:06,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:07,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:07,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:16:08,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:08,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 134 [2022-03-03 19:16:08,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 112 [2022-03-03 19:16:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:08,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:09,204 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:09,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 133 [2022-03-03 19:16:09,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:09,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:16:09,596 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:09,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:16:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:09,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952532064] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:09,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:09,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:09,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529599679] [2022-03-03 19:16:09,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:09,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:09,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:09,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:09,641 INFO L87 Difference]: Start difference. First operand 292 states and 835 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:10,310 INFO L93 Difference]: Finished difference Result 449 states and 1283 transitions. [2022-03-03 19:16:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:10,311 INFO L225 Difference]: With dead ends: 449 [2022-03-03 19:16:10,311 INFO L226 Difference]: Without dead ends: 442 [2022-03-03 19:16:10,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:10,311 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:10,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 315 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-03-03 19:16:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-03 19:16:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 293. [2022-03-03 19:16:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.8664383561643834) internal successors, (837), 292 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 837 transitions. [2022-03-03 19:16:10,315 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 837 transitions. Word has length 20 [2022-03-03 19:16:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:10,315 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 837 transitions. [2022-03-03 19:16:10,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 837 transitions. [2022-03-03 19:16:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:10,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:10,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:10,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:10,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable406 [2022-03-03 19:16:10,528 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash -841209761, now seen corresponding path program 17 times [2022-03-03 19:16:10,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:10,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652067598] [2022-03-03 19:16:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:10,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:10,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652067598] [2022-03-03 19:16:10,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652067598] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:10,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237107820] [2022-03-03 19:16:10,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:10,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:10,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:10,926 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:10,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-03-03 19:16:10,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:10,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:10,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:16:10,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:11,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:16:11,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-03-03 19:16:11,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-03-03 19:16:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:12,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:13,800 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:13,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 131 [2022-03-03 19:16:14,315 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:16:14,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:16:14,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:16:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:14,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237107820] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:14,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:14,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:16:14,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263183181] [2022-03-03 19:16:14,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:14,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:16:14,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:16:14,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:16:14,324 INFO L87 Difference]: Start difference. First operand 293 states and 837 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:17,458 INFO L93 Difference]: Finished difference Result 645 states and 1758 transitions. [2022-03-03 19:16:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:16:17,459 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:17,459 INFO L225 Difference]: With dead ends: 645 [2022-03-03 19:16:17,460 INFO L226 Difference]: Without dead ends: 615 [2022-03-03 19:16:17,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=293, Invalid=1777, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:16:17,460 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 166 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:17,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 495 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1301 Invalid, 0 Unknown, 16 Unchecked, 0.7s Time] [2022-03-03 19:16:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-03-03 19:16:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 302. [2022-03-03 19:16:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.870431893687708) internal successors, (864), 301 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 864 transitions. [2022-03-03 19:16:17,464 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 864 transitions. Word has length 20 [2022-03-03 19:16:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:17,464 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 864 transitions. [2022-03-03 19:16:17,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 864 transitions. [2022-03-03 19:16:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:17,465 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:17,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:17,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:17,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407,218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:17,667 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -818613213, now seen corresponding path program 18 times [2022-03-03 19:16:17,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:17,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789401151] [2022-03-03 19:16:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:17,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:17,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789401151] [2022-03-03 19:16:17,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789401151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:17,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259477650] [2022-03-03 19:16:17,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:17,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:17,932 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:17,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-03-03 19:16:17,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:16:17,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:17,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:17,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:18,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:18,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:16:18,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:18,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:16:18,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:16:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:19,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:19,608 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:19,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 138 [2022-03-03 19:16:19,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:19,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:19,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:19,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:19,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259477650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:19,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:19,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:19,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78054679] [2022-03-03 19:16:19,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:19,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:19,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:19,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:19,985 INFO L87 Difference]: Start difference. First operand 302 states and 864 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:20,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:20,312 INFO L93 Difference]: Finished difference Result 511 states and 1457 transitions. [2022-03-03 19:16:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:16:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:20,313 INFO L225 Difference]: With dead ends: 511 [2022-03-03 19:16:20,313 INFO L226 Difference]: Without dead ends: 504 [2022-03-03 19:16:20,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:16:20,313 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:20,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 292 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 313 Invalid, 0 Unknown, 160 Unchecked, 0.1s Time] [2022-03-03 19:16:20,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-03-03 19:16:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 308. [2022-03-03 19:16:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 2.8631921824104234) internal successors, (879), 307 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 879 transitions. [2022-03-03 19:16:20,317 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 879 transitions. Word has length 20 [2022-03-03 19:16:20,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:20,317 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 879 transitions. [2022-03-03 19:16:20,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:20,317 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 879 transitions. [2022-03-03 19:16:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:20,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:20,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:20,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Ended with exit code 0 [2022-03-03 19:16:20,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable408 [2022-03-03 19:16:20,533 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:20,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1851253859, now seen corresponding path program 19 times [2022-03-03 19:16:20,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:20,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876979019] [2022-03-03 19:16:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:20,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:20,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876979019] [2022-03-03 19:16:20,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876979019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:20,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958802744] [2022-03-03 19:16:20,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:20,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:20,962 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:20,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2022-03-03 19:16:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:20,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:20,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:21,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:21,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:16:22,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:22,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-03-03 19:16:22,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-03-03 19:16:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:22,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:23,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:23,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 138 [2022-03-03 19:16:24,079 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:24,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:24,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:24,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:24,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958802744] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:24,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:24,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:24,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080077879] [2022-03-03 19:16:24,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:24,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:24,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:24,161 INFO L87 Difference]: Start difference. First operand 308 states and 879 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:25,473 INFO L93 Difference]: Finished difference Result 521 states and 1473 transitions. [2022-03-03 19:16:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:16:25,473 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:25,474 INFO L225 Difference]: With dead ends: 521 [2022-03-03 19:16:25,474 INFO L226 Difference]: Without dead ends: 518 [2022-03-03 19:16:25,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:16:25,474 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:25,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 310 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 319 Invalid, 0 Unknown, 331 Unchecked, 0.2s Time] [2022-03-03 19:16:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-03-03 19:16:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 309. [2022-03-03 19:16:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.866883116883117) internal successors, (883), 308 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 883 transitions. [2022-03-03 19:16:25,478 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 883 transitions. Word has length 20 [2022-03-03 19:16:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:25,478 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 883 transitions. [2022-03-03 19:16:25,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 883 transitions. [2022-03-03 19:16:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:25,479 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:25,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:25,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Ended with exit code 0 [2022-03-03 19:16:25,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:25,679 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1304960999, now seen corresponding path program 20 times [2022-03-03 19:16:25,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:25,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192854240] [2022-03-03 19:16:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:26,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:26,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192854240] [2022-03-03 19:16:26,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192854240] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:26,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832343180] [2022-03-03 19:16:26,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:16:26,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:26,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:26,047 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:26,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2022-03-03 19:16:26,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:26,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:26,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:26,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:26,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:26,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:16:27,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:27,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:16:27,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:16:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:27,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:28,204 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:28,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 141 [2022-03-03 19:16:28,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:28,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:16:28,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:28,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:16:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:28,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832343180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:28,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:28,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:28,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121681739] [2022-03-03 19:16:28,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:28,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:28,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:28,644 INFO L87 Difference]: Start difference. First operand 309 states and 883 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:29,630 INFO L93 Difference]: Finished difference Result 488 states and 1382 transitions. [2022-03-03 19:16:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:29,631 INFO L225 Difference]: With dead ends: 488 [2022-03-03 19:16:29,631 INFO L226 Difference]: Without dead ends: 481 [2022-03-03 19:16:29,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:29,631 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 68 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:29,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 297 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2022-03-03 19:16:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-03 19:16:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 310. [2022-03-03 19:16:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.867313915857605) internal successors, (886), 309 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 886 transitions. [2022-03-03 19:16:29,635 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 886 transitions. Word has length 20 [2022-03-03 19:16:29,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:29,635 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 886 transitions. [2022-03-03 19:16:29,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 886 transitions. [2022-03-03 19:16:29,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:29,635 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:29,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:29,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Ended with exit code 0 [2022-03-03 19:16:29,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable410 [2022-03-03 19:16:29,843 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1327557547, now seen corresponding path program 21 times [2022-03-03 19:16:29,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:29,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006771915] [2022-03-03 19:16:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:30,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:30,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006771915] [2022-03-03 19:16:30,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006771915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:30,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223613903] [2022-03-03 19:16:30,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:16:30,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:30,299 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:30,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2022-03-03 19:16:30,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:16:30,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:30,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:16:30,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:31,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:31,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 129 [2022-03-03 19:16:31,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:31,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 315 treesize of output 275 [2022-03-03 19:16:31,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 235 [2022-03-03 19:16:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:33,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:34,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:34,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 229 [2022-03-03 19:16:34,804 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:34,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:34,808 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:34,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:34,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223613903] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:34,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:34,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:34,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376487054] [2022-03-03 19:16:34,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:34,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:34,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:34,846 INFO L87 Difference]: Start difference. First operand 310 states and 886 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:35,179 INFO L93 Difference]: Finished difference Result 518 states and 1491 transitions. [2022-03-03 19:16:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:16:35,180 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:35,180 INFO L225 Difference]: With dead ends: 518 [2022-03-03 19:16:35,180 INFO L226 Difference]: Without dead ends: 511 [2022-03-03 19:16:35,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:16:35,181 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 66 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 471 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:35,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 273 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 471 Unchecked, 0.1s Time] [2022-03-03 19:16:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-03-03 19:16:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 315. [2022-03-03 19:16:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.8694267515923566) internal successors, (901), 314 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 901 transitions. [2022-03-03 19:16:35,184 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 901 transitions. Word has length 20 [2022-03-03 19:16:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:35,184 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 901 transitions. [2022-03-03 19:16:35,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 901 transitions. [2022-03-03 19:16:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:35,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:35,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:35,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:35,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable411 [2022-03-03 19:16:35,401 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -297542677, now seen corresponding path program 22 times [2022-03-03 19:16:35,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:35,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540416816] [2022-03-03 19:16:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:35,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:35,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540416816] [2022-03-03 19:16:35,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540416816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:35,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672122207] [2022-03-03 19:16:35,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:35,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:35,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:35,793 INFO L229 MonitoredProcess]: Starting monitored process 223 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:35,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2022-03-03 19:16:35,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:35,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:35,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:16:35,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:36,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:36,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:16:36,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:36,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:16:36,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:16:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:38,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:38,973 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:38,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 157 [2022-03-03 19:16:39,425 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:39,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:39,430 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:39,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:39,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672122207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:39,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:39,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:39,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215522207] [2022-03-03 19:16:39,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:39,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:39,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:39,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:39,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:39,493 INFO L87 Difference]: Start difference. First operand 315 states and 901 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:40,808 INFO L93 Difference]: Finished difference Result 490 states and 1395 transitions. [2022-03-03 19:16:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:16:40,808 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:40,809 INFO L225 Difference]: With dead ends: 490 [2022-03-03 19:16:40,809 INFO L226 Difference]: Without dead ends: 487 [2022-03-03 19:16:40,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:16:40,809 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 72 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:40,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 270 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 338 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2022-03-03 19:16:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-03-03 19:16:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 316. [2022-03-03 19:16:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.8634920634920635) internal successors, (902), 315 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 902 transitions. [2022-03-03 19:16:40,813 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 902 transitions. Word has length 20 [2022-03-03 19:16:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:40,813 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 902 transitions. [2022-03-03 19:16:40,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:40,813 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 902 transitions. [2022-03-03 19:16:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:40,813 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:40,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:40,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:41,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable412 [2022-03-03 19:16:41,023 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1899012353, now seen corresponding path program 23 times [2022-03-03 19:16:41,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:41,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586071748] [2022-03-03 19:16:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:41,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:41,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586071748] [2022-03-03 19:16:41,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586071748] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:41,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473330467] [2022-03-03 19:16:41,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:41,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:41,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:41,411 INFO L229 MonitoredProcess]: Starting monitored process 224 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:41,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2022-03-03 19:16:41,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:41,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:41,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:41,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:41,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:16:42,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 145 [2022-03-03 19:16:42,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-03-03 19:16:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:42,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:42,815 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:42,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 110 [2022-03-03 19:16:43,167 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:16:43,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:16:43,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:16:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:43,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473330467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:43,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:43,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:16:43,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453877001] [2022-03-03 19:16:43,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:43,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:16:43,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:16:43,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:16:43,178 INFO L87 Difference]: Start difference. First operand 316 states and 902 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:44,580 INFO L93 Difference]: Finished difference Result 577 states and 1614 transitions. [2022-03-03 19:16:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:16:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:44,581 INFO L225 Difference]: With dead ends: 577 [2022-03-03 19:16:44,581 INFO L226 Difference]: Without dead ends: 547 [2022-03-03 19:16:44,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:16:44,582 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 241 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:44,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 256 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 761 Invalid, 0 Unknown, 4 Unchecked, 0.3s Time] [2022-03-03 19:16:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-03 19:16:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 315. [2022-03-03 19:16:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.872611464968153) internal successors, (902), 314 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 902 transitions. [2022-03-03 19:16:44,586 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 902 transitions. Word has length 20 [2022-03-03 19:16:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:44,586 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 902 transitions. [2022-03-03 19:16:44,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 902 transitions. [2022-03-03 19:16:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:44,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:44,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:44,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:44,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable413 [2022-03-03 19:16:44,795 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1235548755, now seen corresponding path program 24 times [2022-03-03 19:16:44,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:44,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737770097] [2022-03-03 19:16:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:44,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:45,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:45,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737770097] [2022-03-03 19:16:45,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737770097] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:45,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579324642] [2022-03-03 19:16:45,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:45,453 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:45,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2022-03-03 19:16:45,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:16:45,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:45,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:16:45,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:46,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:46,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:16:46,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:46,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 203 [2022-03-03 19:16:46,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 175 [2022-03-03 19:16:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:47,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:49,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:49,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 222 [2022-03-03 19:16:49,959 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:49,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:16:49,964 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:49,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:16:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:50,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579324642] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:50,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:50,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:50,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952018104] [2022-03-03 19:16:50,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:50,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:50,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:50,008 INFO L87 Difference]: Start difference. First operand 315 states and 902 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:52,407 INFO L93 Difference]: Finished difference Result 672 states and 1880 transitions. [2022-03-03 19:16:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:16:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:52,408 INFO L225 Difference]: With dead ends: 672 [2022-03-03 19:16:52,408 INFO L226 Difference]: Without dead ends: 652 [2022-03-03 19:16:52,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:16:52,409 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 146 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:52,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 342 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 350 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2022-03-03 19:16:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-03-03 19:16:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 321. [2022-03-03 19:16:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 2.875) internal successors, (920), 320 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 920 transitions. [2022-03-03 19:16:52,413 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 920 transitions. Word has length 20 [2022-03-03 19:16:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:52,413 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 920 transitions. [2022-03-03 19:16:52,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 920 transitions. [2022-03-03 19:16:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:52,414 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:52,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:52,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Ended with exit code 0 [2022-03-03 19:16:52,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414,225 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:52,624 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2139629105, now seen corresponding path program 25 times [2022-03-03 19:16:52,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:52,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273455408] [2022-03-03 19:16:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:52,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:53,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:53,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273455408] [2022-03-03 19:16:53,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273455408] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:53,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071144689] [2022-03-03 19:16:53,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:53,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:53,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:53,073 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:53,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2022-03-03 19:16:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:53,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:16:53,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:53,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:53,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:16:54,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:54,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 136 [2022-03-03 19:16:54,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2022-03-03 19:16:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:54,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:54,739 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:54,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:16:55,158 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:55,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:16:55,163 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:55,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:16:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:55,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071144689] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:55,212 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:55,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:55,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410360663] [2022-03-03 19:16:55,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:55,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:55,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:55,212 INFO L87 Difference]: Start difference. First operand 321 states and 920 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:55,741 INFO L93 Difference]: Finished difference Result 458 states and 1323 transitions. [2022-03-03 19:16:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:16:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:55,742 INFO L225 Difference]: With dead ends: 458 [2022-03-03 19:16:55,742 INFO L226 Difference]: Without dead ends: 451 [2022-03-03 19:16:55,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:55,742 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:55,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 282 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 283 Unchecked, 0.1s Time] [2022-03-03 19:16:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-03-03 19:16:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 325. [2022-03-03 19:16:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.8703703703703702) internal successors, (930), 324 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 930 transitions. [2022-03-03 19:16:55,746 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 930 transitions. Word has length 20 [2022-03-03 19:16:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:55,746 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 930 transitions. [2022-03-03 19:16:55,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 930 transitions. [2022-03-03 19:16:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:55,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:55,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:55,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:55,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415,226 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:55,960 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 160873035, now seen corresponding path program 26 times [2022-03-03 19:16:55,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:55,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017691996] [2022-03-03 19:16:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:56,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:56,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017691996] [2022-03-03 19:16:56,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017691996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:56,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135999888] [2022-03-03 19:16:56,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:16:56,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:56,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:56,248 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:56,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2022-03-03 19:16:56,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:56,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:56,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:16:56,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:56,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:56,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:16:57,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:57,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 197 [2022-03-03 19:16:57,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 167 [2022-03-03 19:16:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:58,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:00,161 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:00,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 275 treesize of output 253 [2022-03-03 19:17:01,276 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:01,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:17:01,282 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:01,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:17:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:01,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135999888] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:01,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:01,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:01,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846523488] [2022-03-03 19:17:01,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:01,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:01,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:01,346 INFO L87 Difference]: Start difference. First operand 325 states and 930 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:01,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:01,690 INFO L93 Difference]: Finished difference Result 501 states and 1438 transitions. [2022-03-03 19:17:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:17:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:01,691 INFO L225 Difference]: With dead ends: 501 [2022-03-03 19:17:01,691 INFO L226 Difference]: Without dead ends: 494 [2022-03-03 19:17:01,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:17:01,692 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 63 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:01,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 238 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 313 Unchecked, 0.1s Time] [2022-03-03 19:17:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-03-03 19:17:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 332. [2022-03-03 19:17:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.86404833836858) internal successors, (948), 331 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 948 transitions. [2022-03-03 19:17:01,696 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 948 transitions. Word has length 20 [2022-03-03 19:17:01,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:01,696 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 948 transitions. [2022-03-03 19:17:01,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 948 transitions. [2022-03-03 19:17:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:01,697 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:01,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:01,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Ended with exit code 0 [2022-03-03 19:17:01,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416,227 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:01,907 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:01,908 INFO L85 PathProgramCache]: Analyzing trace with hash 183469583, now seen corresponding path program 27 times [2022-03-03 19:17:01,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:01,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380551774] [2022-03-03 19:17:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:02,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:02,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380551774] [2022-03-03 19:17:02,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380551774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:02,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721799738] [2022-03-03 19:17:02,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:17:02,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:02,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:02,182 INFO L229 MonitoredProcess]: Starting monitored process 228 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:02,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Waiting until timeout for monitored process [2022-03-03 19:17:02,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:17:02,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:02,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:17:02,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:02,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:02,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:17:03,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:03,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 220 [2022-03-03 19:17:03,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 190 [2022-03-03 19:17:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:04,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:04,811 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:04,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 213 [2022-03-03 19:17:06,043 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:06,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:17:06,048 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:06,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:17:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:06,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721799738] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:06,084 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:06,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:06,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196428641] [2022-03-03 19:17:06,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:06,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:06,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:06,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:06,085 INFO L87 Difference]: Start difference. First operand 332 states and 948 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:06,493 INFO L93 Difference]: Finished difference Result 511 states and 1466 transitions. [2022-03-03 19:17:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:17:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:06,494 INFO L225 Difference]: With dead ends: 511 [2022-03-03 19:17:06,495 INFO L226 Difference]: Without dead ends: 504 [2022-03-03 19:17:06,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:17:06,495 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 67 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:06,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 261 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 513 Unchecked, 0.1s Time] [2022-03-03 19:17:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-03-03 19:17:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 339. [2022-03-03 19:17:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.8550295857988166) internal successors, (965), 338 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 965 transitions. [2022-03-03 19:17:06,499 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 965 transitions. Word has length 20 [2022-03-03 19:17:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:06,499 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 965 transitions. [2022-03-03 19:17:06,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 965 transitions. [2022-03-03 19:17:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:06,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:06,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:06,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:06,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417,228 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:06,716 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:06,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1987923501, now seen corresponding path program 28 times [2022-03-03 19:17:06,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:06,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307870774] [2022-03-03 19:17:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:07,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:07,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307870774] [2022-03-03 19:17:07,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307870774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:07,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444770896] [2022-03-03 19:17:07,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:17:07,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:07,082 INFO L229 MonitoredProcess]: Starting monitored process 229 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:07,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Waiting until timeout for monitored process [2022-03-03 19:17:07,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:17:07,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:07,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:17:07,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:07,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:07,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:17:07,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:07,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 192 [2022-03-03 19:17:07,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 164 [2022-03-03 19:17:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:09,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:10,396 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:10,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 171 [2022-03-03 19:17:11,056 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:11,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:17:11,062 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:11,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:17:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:11,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444770896] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:11,128 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:11,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:11,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978318654] [2022-03-03 19:17:11,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:11,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:11,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:11,129 INFO L87 Difference]: Start difference. First operand 339 states and 965 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:12,700 INFO L93 Difference]: Finished difference Result 504 states and 1440 transitions. [2022-03-03 19:17:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:17:12,701 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:12,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:12,701 INFO L225 Difference]: With dead ends: 504 [2022-03-03 19:17:12,701 INFO L226 Difference]: Without dead ends: 497 [2022-03-03 19:17:12,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:17:12,702 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 108 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:12,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 307 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 348 Unchecked, 0.2s Time] [2022-03-03 19:17:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-03-03 19:17:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 339. [2022-03-03 19:17:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.8550295857988166) internal successors, (965), 338 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 965 transitions. [2022-03-03 19:17:12,706 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 965 transitions. Word has length 20 [2022-03-03 19:17:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:12,706 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 965 transitions. [2022-03-03 19:17:12,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 965 transitions. [2022-03-03 19:17:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:12,706 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:12,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:12,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:12,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418,229 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:12,915 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:12,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1965326953, now seen corresponding path program 29 times [2022-03-03 19:17:12,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:12,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772689266] [2022-03-03 19:17:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:13,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:13,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772689266] [2022-03-03 19:17:13,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772689266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:13,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176660601] [2022-03-03 19:17:13,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:17:13,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:13,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:13,416 INFO L229 MonitoredProcess]: Starting monitored process 230 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:13,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Waiting until timeout for monitored process [2022-03-03 19:17:13,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:13,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:13,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:17:13,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:13,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:17:14,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:17:14,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:17:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:14,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:15,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:15,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 114 [2022-03-03 19:17:15,863 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:17:15,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-03-03 19:17:15,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-03-03 19:17:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:15,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176660601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:15,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:15,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:17:15,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220007974] [2022-03-03 19:17:15,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:15,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:17:15,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:17:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:17:15,872 INFO L87 Difference]: Start difference. First operand 339 states and 965 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:18,458 INFO L93 Difference]: Finished difference Result 689 states and 1844 transitions. [2022-03-03 19:17:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:17:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:18,460 INFO L225 Difference]: With dead ends: 689 [2022-03-03 19:17:18,460 INFO L226 Difference]: Without dead ends: 659 [2022-03-03 19:17:18,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:17:18,460 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 262 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:18,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 439 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1071 Invalid, 0 Unknown, 67 Unchecked, 0.5s Time] [2022-03-03 19:17:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-03-03 19:17:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 338. [2022-03-03 19:17:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.8753709198813056) internal successors, (969), 337 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 969 transitions. [2022-03-03 19:17:18,465 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 969 transitions. Word has length 20 [2022-03-03 19:17:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:18,465 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 969 transitions. [2022-03-03 19:17:18,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 969 transitions. [2022-03-03 19:17:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:18,465 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:18,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:18,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:18,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419,230 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:18,674 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash -402023701, now seen corresponding path program 30 times [2022-03-03 19:17:18,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:18,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613728717] [2022-03-03 19:17:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:19,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:19,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613728717] [2022-03-03 19:17:19,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613728717] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:19,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704013919] [2022-03-03 19:17:19,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:17:19,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:19,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:19,177 INFO L229 MonitoredProcess]: Starting monitored process 231 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:19,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Waiting until timeout for monitored process [2022-03-03 19:17:19,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:17:19,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:19,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:17:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:19,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:19,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:17:20,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:20,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 205 [2022-03-03 19:17:20,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 175 [2022-03-03 19:17:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:22,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:23,026 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:23,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 232 [2022-03-03 19:17:23,716 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:23,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:17:23,724 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:23,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:17:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:23,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704013919] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:23,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:23,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:23,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760124656] [2022-03-03 19:17:23,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:23,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:23,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:23,777 INFO L87 Difference]: Start difference. First operand 338 states and 969 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:26,739 INFO L93 Difference]: Finished difference Result 712 states and 2013 transitions. [2022-03-03 19:17:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:17:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:26,740 INFO L225 Difference]: With dead ends: 712 [2022-03-03 19:17:26,740 INFO L226 Difference]: Without dead ends: 680 [2022-03-03 19:17:26,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=206, Invalid=1354, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:17:26,741 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 177 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:26,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 311 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 359 Invalid, 0 Unknown, 183 Unchecked, 0.3s Time] [2022-03-03 19:17:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-03 19:17:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 354. [2022-03-03 19:17:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 2.8866855524079322) internal successors, (1019), 353 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1019 transitions. [2022-03-03 19:17:26,746 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1019 transitions. Word has length 20 [2022-03-03 19:17:26,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:26,746 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 1019 transitions. [2022-03-03 19:17:26,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1019 transitions. [2022-03-03 19:17:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:26,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:26,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:26,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Ended with exit code 0 [2022-03-03 19:17:26,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable420 [2022-03-03 19:17:26,947 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1580140121, now seen corresponding path program 31 times [2022-03-03 19:17:26,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:26,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877440704] [2022-03-03 19:17:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:27,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:27,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877440704] [2022-03-03 19:17:27,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877440704] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:27,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227356150] [2022-03-03 19:17:27,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:17:27,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:27,488 INFO L229 MonitoredProcess]: Starting monitored process 232 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:27,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Waiting until timeout for monitored process [2022-03-03 19:17:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:27,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:17:27,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:27,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:27,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:17:28,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:28,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 194 [2022-03-03 19:17:28,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 164 [2022-03-03 19:17:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:29,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:29,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:29,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:17:29,836 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:29,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:17:29,842 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:29,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:17:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:29,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227356150] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:29,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:29,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:29,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205221256] [2022-03-03 19:17:29,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:29,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:29,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:29,902 INFO L87 Difference]: Start difference. First operand 354 states and 1019 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:32,298 INFO L93 Difference]: Finished difference Result 762 states and 2085 transitions. [2022-03-03 19:17:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:17:32,298 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:32,299 INFO L225 Difference]: With dead ends: 762 [2022-03-03 19:17:32,299 INFO L226 Difference]: Without dead ends: 720 [2022-03-03 19:17:32,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=224, Invalid=1668, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:17:32,299 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 229 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:32,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 431 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 599 Invalid, 0 Unknown, 297 Unchecked, 0.3s Time] [2022-03-03 19:17:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-03-03 19:17:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 374. [2022-03-03 19:17:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.9571045576407506) internal successors, (1103), 373 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1103 transitions. [2022-03-03 19:17:32,304 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1103 transitions. Word has length 20 [2022-03-03 19:17:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:32,305 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1103 transitions. [2022-03-03 19:17:32,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1103 transitions. [2022-03-03 19:17:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:32,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:32,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:32,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Ended with exit code 0 [2022-03-03 19:17:32,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable421 [2022-03-03 19:17:32,506 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:32,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash 791513833, now seen corresponding path program 32 times [2022-03-03 19:17:32,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:32,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538352983] [2022-03-03 19:17:32,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:32,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:33,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:33,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538352983] [2022-03-03 19:17:33,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538352983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:33,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127638864] [2022-03-03 19:17:33,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:17:33,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:33,050 INFO L229 MonitoredProcess]: Starting monitored process 233 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:33,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Waiting until timeout for monitored process [2022-03-03 19:17:33,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:33,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:33,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:17:33,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:33,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:33,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:17:34,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:34,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:17:34,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:17:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:34,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:35,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:35,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-03-03 19:17:36,033 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:36,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:17:36,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:36,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:17:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:36,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127638864] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:36,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:36,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:36,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693460521] [2022-03-03 19:17:36,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:36,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:36,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:36,115 INFO L87 Difference]: Start difference. First operand 374 states and 1103 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:37,844 INFO L93 Difference]: Finished difference Result 637 states and 1923 transitions. [2022-03-03 19:17:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:17:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:37,845 INFO L225 Difference]: With dead ends: 637 [2022-03-03 19:17:37,846 INFO L226 Difference]: Without dead ends: 599 [2022-03-03 19:17:37,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:17:37,846 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 137 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:37,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 323 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 371 Invalid, 0 Unknown, 154 Unchecked, 0.2s Time] [2022-03-03 19:17:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-03 19:17:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 414. [2022-03-03 19:17:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.009685230024213) internal successors, (1243), 413 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1243 transitions. [2022-03-03 19:17:37,851 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1243 transitions. Word has length 20 [2022-03-03 19:17:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:37,851 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1243 transitions. [2022-03-03 19:17:37,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1243 transitions. [2022-03-03 19:17:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:37,852 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:37,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:37,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Ended with exit code 0 [2022-03-03 19:17:38,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable422 [2022-03-03 19:17:38,067 INFO L402 AbstractCegarLoop]: === Iteration 424 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1623629293, now seen corresponding path program 33 times [2022-03-03 19:17:38,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:38,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114466110] [2022-03-03 19:17:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:38,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:38,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114466110] [2022-03-03 19:17:38,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114466110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:38,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792200980] [2022-03-03 19:17:38,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:17:38,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:38,638 INFO L229 MonitoredProcess]: Starting monitored process 234 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:38,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Waiting until timeout for monitored process [2022-03-03 19:17:38,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:17:38,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:38,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:17:38,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:39,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:39,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:17:39,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:39,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 208 [2022-03-03 19:17:39,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 180 [2022-03-03 19:17:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:40,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:41,752 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:41,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 230 treesize of output 216 [2022-03-03 19:17:42,652 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:42,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:17:42,658 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:42,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:17:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:42,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792200980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:42,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:42,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:42,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125885705] [2022-03-03 19:17:42,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:42,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:42,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:42,729 INFO L87 Difference]: Start difference. First operand 414 states and 1243 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:45,639 INFO L93 Difference]: Finished difference Result 734 states and 2192 transitions. [2022-03-03 19:17:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 19:17:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:45,640 INFO L225 Difference]: With dead ends: 734 [2022-03-03 19:17:45,640 INFO L226 Difference]: Without dead ends: 720 [2022-03-03 19:17:45,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:17:45,640 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 183 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 545 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:45,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 375 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 480 Invalid, 0 Unknown, 545 Unchecked, 0.3s Time] [2022-03-03 19:17:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-03-03 19:17:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 434. [2022-03-03 19:17:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.071593533487298) internal successors, (1330), 433 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1330 transitions. [2022-03-03 19:17:45,646 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1330 transitions. Word has length 20 [2022-03-03 19:17:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:45,646 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1330 transitions. [2022-03-03 19:17:45,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1330 transitions. [2022-03-03 19:17:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:45,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:45,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:45,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:45,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423,234 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:45,862 INFO L402 AbstractCegarLoop]: === Iteration 425 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1577514345, now seen corresponding path program 34 times [2022-03-03 19:17:45,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:45,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636740349] [2022-03-03 19:17:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:46,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:46,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636740349] [2022-03-03 19:17:46,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636740349] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:46,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857964209] [2022-03-03 19:17:46,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:17:46,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:46,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:46,502 INFO L229 MonitoredProcess]: Starting monitored process 235 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:46,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Waiting until timeout for monitored process [2022-03-03 19:17:46,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:17:46,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:46,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:17:46,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:46,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:46,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:17:47,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:47,509 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:17:47,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:17:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:48,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:48,554 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:48,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:17:49,024 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:49,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:17:49,028 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:49,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:17:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:49,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857964209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:49,083 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:49,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:49,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379344381] [2022-03-03 19:17:49,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:49,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:49,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:49,083 INFO L87 Difference]: Start difference. First operand 434 states and 1330 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:50,819 INFO L93 Difference]: Finished difference Result 832 states and 2375 transitions. [2022-03-03 19:17:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:17:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:50,821 INFO L225 Difference]: With dead ends: 832 [2022-03-03 19:17:50,821 INFO L226 Difference]: Without dead ends: 790 [2022-03-03 19:17:50,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:17:50,821 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 203 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:50,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 402 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 521 Invalid, 0 Unknown, 215 Unchecked, 0.3s Time] [2022-03-03 19:17:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-03-03 19:17:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 443. [2022-03-03 19:17:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.1040723981900453) internal successors, (1372), 442 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1372 transitions. [2022-03-03 19:17:50,827 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1372 transitions. Word has length 20 [2022-03-03 19:17:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:50,828 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1372 transitions. [2022-03-03 19:17:50,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1372 transitions. [2022-03-03 19:17:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:50,828 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:50,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:50,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Ended with exit code 0 [2022-03-03 19:17:51,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424,235 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:51,043 INFO L402 AbstractCegarLoop]: === Iteration 426 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:51,044 INFO L85 PathProgramCache]: Analyzing trace with hash -805572465, now seen corresponding path program 35 times [2022-03-03 19:17:51,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:51,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346130926] [2022-03-03 19:17:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:51,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:51,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:51,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346130926] [2022-03-03 19:17:51,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346130926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:51,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965743274] [2022-03-03 19:17:51,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:17:51,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:51,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:51,438 INFO L229 MonitoredProcess]: Starting monitored process 236 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:51,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Waiting until timeout for monitored process [2022-03-03 19:17:51,461 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:51,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:51,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:17:51,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:51,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:17:51,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-03-03 19:17:51,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 111 [2022-03-03 19:17:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:52,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:53,004 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:53,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 113 [2022-03-03 19:17:53,344 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:17:53,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-03-03 19:17:53,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-03-03 19:17:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:53,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965743274] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:53,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:53,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:17:53,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975632394] [2022-03-03 19:17:53,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:53,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:17:53,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:17:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:17:53,353 INFO L87 Difference]: Start difference. First operand 443 states and 1372 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:56,190 INFO L93 Difference]: Finished difference Result 722 states and 2100 transitions. [2022-03-03 19:17:56,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:17:56,190 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:17:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:56,191 INFO L225 Difference]: With dead ends: 722 [2022-03-03 19:17:56,191 INFO L226 Difference]: Without dead ends: 693 [2022-03-03 19:17:56,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=307, Invalid=1763, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:17:56,192 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 220 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:56,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 378 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 940 Invalid, 0 Unknown, 47 Unchecked, 0.5s Time] [2022-03-03 19:17:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-03-03 19:17:56,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 458. [2022-03-03 19:17:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.111597374179431) internal successors, (1422), 457 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1422 transitions. [2022-03-03 19:17:56,198 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1422 transitions. Word has length 20 [2022-03-03 19:17:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:56,198 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1422 transitions. [2022-03-03 19:17:56,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:56,198 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1422 transitions. [2022-03-03 19:17:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:56,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:56,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:56,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Ended with exit code 0 [2022-03-03 19:17:56,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable425 [2022-03-03 19:17:56,411 INFO L402 AbstractCegarLoop]: === Iteration 427 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2000997617, now seen corresponding path program 36 times [2022-03-03 19:17:56,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:56,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973557212] [2022-03-03 19:17:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:56,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:56,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:56,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973557212] [2022-03-03 19:17:56,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973557212] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:56,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601229226] [2022-03-03 19:17:56,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:17:56,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:56,816 INFO L229 MonitoredProcess]: Starting monitored process 237 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:56,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Waiting until timeout for monitored process [2022-03-03 19:17:56,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:17:56,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:56,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:17:56,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:57,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:57,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:17:57,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:57,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 177 [2022-03-03 19:17:57,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 147 [2022-03-03 19:17:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:58,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:58,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:58,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-03-03 19:17:59,179 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:59,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:17:59,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:59,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:17:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:59,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601229226] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:59,219 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:59,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:59,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882422783] [2022-03-03 19:17:59,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:59,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:59,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:59,222 INFO L87 Difference]: Start difference. First operand 458 states and 1422 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:00,351 INFO L93 Difference]: Finished difference Result 611 states and 1870 transitions. [2022-03-03 19:18:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:00,351 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:00,352 INFO L225 Difference]: With dead ends: 611 [2022-03-03 19:18:00,352 INFO L226 Difference]: Without dead ends: 604 [2022-03-03 19:18:00,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:00,353 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 104 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:00,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 261 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 334 Invalid, 0 Unknown, 294 Unchecked, 0.1s Time] [2022-03-03 19:18:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-03-03 19:18:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 464. [2022-03-03 19:18:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.1144708423326133) internal successors, (1442), 463 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1442 transitions. [2022-03-03 19:18:00,358 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1442 transitions. Word has length 20 [2022-03-03 19:18:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:00,358 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1442 transitions. [2022-03-03 19:18:00,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1442 transitions. [2022-03-03 19:18:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:00,359 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:00,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:00,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Ended with exit code 0 [2022-03-03 19:18:00,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable426 [2022-03-03 19:18:00,559 INFO L402 AbstractCegarLoop]: === Iteration 428 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1978401069, now seen corresponding path program 37 times [2022-03-03 19:18:00,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:00,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743661495] [2022-03-03 19:18:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:00,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:00,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743661495] [2022-03-03 19:18:00,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743661495] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:00,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994235654] [2022-03-03 19:18:00,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:18:00,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:00,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:00,860 INFO L229 MonitoredProcess]: Starting monitored process 238 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:00,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Waiting until timeout for monitored process [2022-03-03 19:18:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:00,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:18:00,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:01,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:01,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:18:02,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:02,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 199 [2022-03-03 19:18:02,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 169 [2022-03-03 19:18:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:03,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:03,654 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:03,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 138 [2022-03-03 19:18:04,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:04,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:18:04,109 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:04,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:18:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:04,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994235654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:04,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:04,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:04,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675662068] [2022-03-03 19:18:04,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:04,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:04,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:04,170 INFO L87 Difference]: Start difference. First operand 464 states and 1442 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:04,674 INFO L93 Difference]: Finished difference Result 600 states and 1852 transitions. [2022-03-03 19:18:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:18:04,674 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:04,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:04,675 INFO L225 Difference]: With dead ends: 600 [2022-03-03 19:18:04,675 INFO L226 Difference]: Without dead ends: 593 [2022-03-03 19:18:04,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:18:04,675 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:04,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 304 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 383 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2022-03-03 19:18:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-03-03 19:18:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 468. [2022-03-03 19:18:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.1177730192719486) internal successors, (1456), 467 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1456 transitions. [2022-03-03 19:18:04,697 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1456 transitions. Word has length 20 [2022-03-03 19:18:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:04,697 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1456 transitions. [2022-03-03 19:18:04,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1456 transitions. [2022-03-03 19:18:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:04,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:04,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:04,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (238)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:04,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427,238 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:04,911 INFO L402 AbstractCegarLoop]: === Iteration 429 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 116771883, now seen corresponding path program 38 times [2022-03-03 19:18:04,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:04,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050626330] [2022-03-03 19:18:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:05,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:05,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050626330] [2022-03-03 19:18:05,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050626330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:05,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799665520] [2022-03-03 19:18:05,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:18:05,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:05,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:05,188 INFO L229 MonitoredProcess]: Starting monitored process 239 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:05,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Waiting until timeout for monitored process [2022-03-03 19:18:05,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:18:05,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:05,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:05,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:05,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:05,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:18:06,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:06,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-03-03 19:18:06,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-03-03 19:18:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:07,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:08,565 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:08,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-03-03 19:18:09,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:09,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:18:09,244 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:09,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:18:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:09,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799665520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:09,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:09,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:09,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073447706] [2022-03-03 19:18:09,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:09,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:09,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:09,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:09,286 INFO L87 Difference]: Start difference. First operand 468 states and 1456 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:10,749 INFO L93 Difference]: Finished difference Result 716 states and 2166 transitions. [2022-03-03 19:18:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:18:10,749 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:10,751 INFO L225 Difference]: With dead ends: 716 [2022-03-03 19:18:10,751 INFO L226 Difference]: Without dead ends: 702 [2022-03-03 19:18:10,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=218, Invalid=1588, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:18:10,751 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 95 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:10,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 416 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 329 Invalid, 0 Unknown, 342 Unchecked, 0.2s Time] [2022-03-03 19:18:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-03-03 19:18:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 478. [2022-03-03 19:18:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 3.1320754716981134) internal successors, (1494), 477 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1494 transitions. [2022-03-03 19:18:10,757 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1494 transitions. Word has length 20 [2022-03-03 19:18:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:10,757 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1494 transitions. [2022-03-03 19:18:10,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1494 transitions. [2022-03-03 19:18:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:10,758 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:10,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:10,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (239)] Ended with exit code 0 [2022-03-03 19:18:10,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428,239 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:10,963 INFO L402 AbstractCegarLoop]: === Iteration 430 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1836304881, now seen corresponding path program 39 times [2022-03-03 19:18:10,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:10,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527955857] [2022-03-03 19:18:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:11,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:11,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527955857] [2022-03-03 19:18:11,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527955857] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:11,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011839373] [2022-03-03 19:18:11,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:18:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:11,285 INFO L229 MonitoredProcess]: Starting monitored process 240 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:11,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Waiting until timeout for monitored process [2022-03-03 19:18:11,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:18:11,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:11,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:11,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:11,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:11,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:18:12,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:12,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-03-03 19:18:12,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-03-03 19:18:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:13,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:14,538 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:14,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 155 [2022-03-03 19:18:14,974 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:14,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:18:14,978 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:14,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:18:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:15,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011839373] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:15,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:15,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:15,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310363198] [2022-03-03 19:18:15,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:15,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:15,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:15,029 INFO L87 Difference]: Start difference. First operand 478 states and 1494 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:16,020 INFO L93 Difference]: Finished difference Result 603 states and 1872 transitions. [2022-03-03 19:18:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:16,021 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:16,021 INFO L225 Difference]: With dead ends: 603 [2022-03-03 19:18:16,022 INFO L226 Difference]: Without dead ends: 588 [2022-03-03 19:18:16,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:16,022 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:16,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 227 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 301 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-03-03 19:18:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-03-03 19:18:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 480. [2022-03-03 19:18:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.139874739039666) internal successors, (1504), 479 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1504 transitions. [2022-03-03 19:18:16,027 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1504 transitions. Word has length 20 [2022-03-03 19:18:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:16,027 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1504 transitions. [2022-03-03 19:18:16,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1504 transitions. [2022-03-03 19:18:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:16,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:16,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:16,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (240)] Ended with exit code 0 [2022-03-03 19:18:16,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429,240 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:16,243 INFO L402 AbstractCegarLoop]: === Iteration 431 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash 142547367, now seen corresponding path program 40 times [2022-03-03 19:18:16,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:16,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697664178] [2022-03-03 19:18:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:16,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:16,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697664178] [2022-03-03 19:18:16,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697664178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:16,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314766583] [2022-03-03 19:18:16,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:18:16,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:16,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:16,531 INFO L229 MonitoredProcess]: Starting monitored process 241 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:16,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Waiting until timeout for monitored process [2022-03-03 19:18:16,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:18:16,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:16,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:18:16,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:16,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:16,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:18:17,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:17,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 179 [2022-03-03 19:18:17,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 151 [2022-03-03 19:18:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:17,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:18,320 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:18,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-03-03 19:18:18,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:18,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:18:18,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:18,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:18:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:18,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314766583] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:18,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:18,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:18,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795265244] [2022-03-03 19:18:18,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:18,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:18,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:18,647 INFO L87 Difference]: Start difference. First operand 480 states and 1504 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:19,525 INFO L93 Difference]: Finished difference Result 646 states and 1964 transitions. [2022-03-03 19:18:19,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:19,526 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:19,527 INFO L225 Difference]: With dead ends: 646 [2022-03-03 19:18:19,527 INFO L226 Difference]: Without dead ends: 639 [2022-03-03 19:18:19,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:18:19,527 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 93 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:19,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 300 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 350 Invalid, 0 Unknown, 173 Unchecked, 0.1s Time] [2022-03-03 19:18:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-03 19:18:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 480. [2022-03-03 19:18:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.139874739039666) internal successors, (1504), 479 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1504 transitions. [2022-03-03 19:18:19,533 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1504 transitions. Word has length 20 [2022-03-03 19:18:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:19,533 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1504 transitions. [2022-03-03 19:18:19,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1504 transitions. [2022-03-03 19:18:19,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:19,533 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:19,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:19,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (241)] Ended with exit code 0 [2022-03-03 19:18:19,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable430 [2022-03-03 19:18:19,749 INFO L402 AbstractCegarLoop]: === Iteration 432 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash 165143915, now seen corresponding path program 41 times [2022-03-03 19:18:19,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:19,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351990321] [2022-03-03 19:18:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:19,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:19,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:19,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351990321] [2022-03-03 19:18:19,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351990321] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:19,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136746602] [2022-03-03 19:18:19,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:18:19,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:19,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:19,953 INFO L229 MonitoredProcess]: Starting monitored process 242 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:19,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Waiting until timeout for monitored process [2022-03-03 19:18:19,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:18:19,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:19,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:18:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:20,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:18:20,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:18:20,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:18:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:20,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:21,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:21,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 111 [2022-03-03 19:18:21,641 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:18:21,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:18:21,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:18:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:21,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136746602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:21,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:21,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:18:21,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302431904] [2022-03-03 19:18:21,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:21,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:18:21,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:18:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:18:21,648 INFO L87 Difference]: Start difference. First operand 480 states and 1504 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:23,723 INFO L93 Difference]: Finished difference Result 793 states and 2339 transitions. [2022-03-03 19:18:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:18:23,724 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:23,725 INFO L225 Difference]: With dead ends: 793 [2022-03-03 19:18:23,725 INFO L226 Difference]: Without dead ends: 763 [2022-03-03 19:18:23,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:18:23,725 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 264 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:23,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 330 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1009 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-03-03 19:18:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-03 19:18:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 479. [2022-03-03 19:18:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.1527196652719667) internal successors, (1507), 478 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1507 transitions. [2022-03-03 19:18:23,731 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1507 transitions. Word has length 20 [2022-03-03 19:18:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:23,731 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 1507 transitions. [2022-03-03 19:18:23,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1507 transitions. [2022-03-03 19:18:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:23,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:23,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:23,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (242)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:23,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable431 [2022-03-03 19:18:23,943 INFO L402 AbstractCegarLoop]: === Iteration 433 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:23,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1919598561, now seen corresponding path program 42 times [2022-03-03 19:18:23,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:23,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200280289] [2022-03-03 19:18:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:23,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:24,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:24,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200280289] [2022-03-03 19:18:24,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200280289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:24,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142723] [2022-03-03 19:18:24,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:18:24,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:24,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:24,232 INFO L229 MonitoredProcess]: Starting monitored process 243 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:24,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Waiting until timeout for monitored process [2022-03-03 19:18:24,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:18:24,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:24,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:24,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:24,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2022-03-03 19:18:25,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:25,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 261 [2022-03-03 19:18:25,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 221 [2022-03-03 19:18:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:26,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:27,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:27,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 259 treesize of output 239 [2022-03-03 19:18:27,827 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:27,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:18:27,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:27,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:18:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:27,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142723] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:27,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:27,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:27,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369142018] [2022-03-03 19:18:27,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:27,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:27,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:27,884 INFO L87 Difference]: Start difference. First operand 479 states and 1507 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:28,490 INFO L93 Difference]: Finished difference Result 621 states and 1923 transitions. [2022-03-03 19:18:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:28,491 INFO L225 Difference]: With dead ends: 621 [2022-03-03 19:18:28,491 INFO L226 Difference]: Without dead ends: 614 [2022-03-03 19:18:28,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:18:28,491 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:28,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 282 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 395 Invalid, 0 Unknown, 260 Unchecked, 0.2s Time] [2022-03-03 19:18:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-03-03 19:18:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 479. [2022-03-03 19:18:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.1527196652719667) internal successors, (1507), 478 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1507 transitions. [2022-03-03 19:18:28,497 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1507 transitions. Word has length 20 [2022-03-03 19:18:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:28,497 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 1507 transitions. [2022-03-03 19:18:28,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1507 transitions. [2022-03-03 19:18:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:28,497 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:28,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:28,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (243)] Ended with exit code 0 [2022-03-03 19:18:28,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable432 [2022-03-03 19:18:28,714 INFO L402 AbstractCegarLoop]: === Iteration 434 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash 226572199, now seen corresponding path program 43 times [2022-03-03 19:18:28,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:28,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439472055] [2022-03-03 19:18:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:28,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:29,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:29,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439472055] [2022-03-03 19:18:29,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439472055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:29,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94767871] [2022-03-03 19:18:29,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:18:29,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:29,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:29,075 INFO L229 MonitoredProcess]: Starting monitored process 244 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:29,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (244)] Waiting until timeout for monitored process [2022-03-03 19:18:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:29,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:29,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:29,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:29,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:18:30,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:30,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-03-03 19:18:30,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-03-03 19:18:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:31,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:32,483 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:32,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 150 [2022-03-03 19:18:33,108 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:33,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:18:33,126 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:33,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:18:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:33,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94767871] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:33,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:33,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:33,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110298478] [2022-03-03 19:18:33,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:33,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:33,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:33,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:33,201 INFO L87 Difference]: Start difference. First operand 479 states and 1507 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:34,261 INFO L93 Difference]: Finished difference Result 622 states and 1934 transitions. [2022-03-03 19:18:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:34,262 INFO L225 Difference]: With dead ends: 622 [2022-03-03 19:18:34,262 INFO L226 Difference]: Without dead ends: 615 [2022-03-03 19:18:34,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:34,262 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:34,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 313 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 220 Unchecked, 0.2s Time] [2022-03-03 19:18:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-03-03 19:18:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 479. [2022-03-03 19:18:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.1527196652719667) internal successors, (1507), 478 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1507 transitions. [2022-03-03 19:18:34,268 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1507 transitions. Word has length 20 [2022-03-03 19:18:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:34,268 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 1507 transitions. [2022-03-03 19:18:34,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1507 transitions. [2022-03-03 19:18:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:34,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:34,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:34,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (244)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:34,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable433 [2022-03-03 19:18:34,482 INFO L402 AbstractCegarLoop]: === Iteration 435 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:34,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:34,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2071411293, now seen corresponding path program 44 times [2022-03-03 19:18:34,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:34,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969208875] [2022-03-03 19:18:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:34,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:34,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:34,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969208875] [2022-03-03 19:18:34,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969208875] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:34,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539369109] [2022-03-03 19:18:34,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:18:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:34,849 INFO L229 MonitoredProcess]: Starting monitored process 245 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:34,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (245)] Waiting until timeout for monitored process [2022-03-03 19:18:34,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:18:34,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:18:34,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:35,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:35,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:18:35,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:35,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 186 [2022-03-03 19:18:35,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 156 [2022-03-03 19:18:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:36,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:37,196 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:37,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 136 [2022-03-03 19:18:37,676 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:37,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:18:37,682 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:37,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:18:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:37,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539369109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:37,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:37,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:37,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70088313] [2022-03-03 19:18:37,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:37,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:37,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:37,750 INFO L87 Difference]: Start difference. First operand 479 states and 1507 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:40,089 INFO L93 Difference]: Finished difference Result 785 states and 2414 transitions. [2022-03-03 19:18:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:18:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:40,091 INFO L225 Difference]: With dead ends: 785 [2022-03-03 19:18:40,091 INFO L226 Difference]: Without dead ends: 771 [2022-03-03 19:18:40,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:18:40,091 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 139 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:40,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 360 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 541 Invalid, 0 Unknown, 371 Unchecked, 0.3s Time] [2022-03-03 19:18:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-03-03 19:18:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 481. [2022-03-03 19:18:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 3.15625) internal successors, (1515), 480 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1515 transitions. [2022-03-03 19:18:40,098 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1515 transitions. Word has length 20 [2022-03-03 19:18:40,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:40,098 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1515 transitions. [2022-03-03 19:18:40,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1515 transitions. [2022-03-03 19:18:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:40,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:40,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:40,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (245)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:40,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434,245 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:40,312 INFO L402 AbstractCegarLoop]: === Iteration 436 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash -351878295, now seen corresponding path program 45 times [2022-03-03 19:18:40,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:40,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968311978] [2022-03-03 19:18:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:40,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:40,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968311978] [2022-03-03 19:18:40,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968311978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:40,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290655928] [2022-03-03 19:18:40,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:18:40,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:40,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:40,659 INFO L229 MonitoredProcess]: Starting monitored process 246 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:40,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (246)] Waiting until timeout for monitored process [2022-03-03 19:18:40,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:18:40,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:40,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:18:40,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:41,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:41,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:18:41,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:41,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 175 [2022-03-03 19:18:41,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 147 [2022-03-03 19:18:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:42,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:42,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:42,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 132 [2022-03-03 19:18:42,798 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:42,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:18:42,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:42,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:18:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:42,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290655928] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:42,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:42,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:42,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375647141] [2022-03-03 19:18:42,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:42,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:42,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:42,836 INFO L87 Difference]: Start difference. First operand 481 states and 1515 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:44,783 INFO L93 Difference]: Finished difference Result 784 states and 2421 transitions. [2022-03-03 19:18:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 19:18:44,783 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:44,785 INFO L225 Difference]: With dead ends: 784 [2022-03-03 19:18:44,785 INFO L226 Difference]: Without dead ends: 739 [2022-03-03 19:18:44,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=222, Invalid=1670, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:18:44,785 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 124 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 365 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:44,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 440 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 461 Invalid, 0 Unknown, 365 Unchecked, 0.2s Time] [2022-03-03 19:18:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-03 19:18:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 485. [2022-03-03 19:18:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.1673553719008263) internal successors, (1533), 484 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1533 transitions. [2022-03-03 19:18:44,791 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1533 transitions. Word has length 20 [2022-03-03 19:18:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1533 transitions. [2022-03-03 19:18:44,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1533 transitions. [2022-03-03 19:18:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:44,792 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:44,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:44,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (246)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:44,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 246 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable435 [2022-03-03 19:18:44,992 INFO L402 AbstractCegarLoop]: === Iteration 437 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2045635809, now seen corresponding path program 46 times [2022-03-03 19:18:44,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:44,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145939010] [2022-03-03 19:18:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:45,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:45,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145939010] [2022-03-03 19:18:45,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145939010] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:45,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95178180] [2022-03-03 19:18:45,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:18:45,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:45,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:45,360 INFO L229 MonitoredProcess]: Starting monitored process 247 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:45,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (247)] Waiting until timeout for monitored process [2022-03-03 19:18:45,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:18:45,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:45,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:45,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:45,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:45,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:18:46,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:46,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-03-03 19:18:46,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-03-03 19:18:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:47,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:49,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:49,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 161 [2022-03-03 19:18:49,576 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:49,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:18:49,580 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:49,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:18:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:49,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95178180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:49,618 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:49,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:49,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300571836] [2022-03-03 19:18:49,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:49,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:49,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:49,619 INFO L87 Difference]: Start difference. First operand 485 states and 1533 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:50,719 INFO L93 Difference]: Finished difference Result 608 states and 1906 transitions. [2022-03-03 19:18:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:18:50,719 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:50,720 INFO L225 Difference]: With dead ends: 608 [2022-03-03 19:18:50,720 INFO L226 Difference]: Without dead ends: 601 [2022-03-03 19:18:50,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:50,721 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 69 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:50,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 285 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 345 Invalid, 0 Unknown, 176 Unchecked, 0.1s Time] [2022-03-03 19:18:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-03-03 19:18:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 489. [2022-03-03 19:18:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 3.1700819672131146) internal successors, (1547), 488 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1547 transitions. [2022-03-03 19:18:50,726 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1547 transitions. Word has length 20 [2022-03-03 19:18:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:50,726 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 1547 transitions. [2022-03-03 19:18:50,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1547 transitions. [2022-03-03 19:18:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:50,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:50,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:50,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (247)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:50,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436,247 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:50,943 INFO L402 AbstractCegarLoop]: === Iteration 438 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2043010033, now seen corresponding path program 47 times [2022-03-03 19:18:50,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:50,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207173316] [2022-03-03 19:18:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:51,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:51,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207173316] [2022-03-03 19:18:51,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207173316] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:51,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200174844] [2022-03-03 19:18:51,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:18:51,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:51,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:51,249 INFO L229 MonitoredProcess]: Starting monitored process 248 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:51,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (248)] Waiting until timeout for monitored process [2022-03-03 19:18:51,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:18:51,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:51,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:51,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:51,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-03-03 19:18:52,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 196 [2022-03-03 19:18:52,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 168 [2022-03-03 19:18:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:53,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:54,140 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:54,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 142 [2022-03-03 19:18:54,675 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:18:54,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:18:54,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:18:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:54,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200174844] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:54,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:54,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:18:54,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699492267] [2022-03-03 19:18:54,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:54,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:18:54,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:18:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:18:54,685 INFO L87 Difference]: Start difference. First operand 489 states and 1547 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:57,497 INFO L93 Difference]: Finished difference Result 805 states and 2367 transitions. [2022-03-03 19:18:57,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:18:57,498 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:18:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:57,499 INFO L225 Difference]: With dead ends: 805 [2022-03-03 19:18:57,499 INFO L226 Difference]: Without dead ends: 775 [2022-03-03 19:18:57,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:18:57,499 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 195 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:57,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 393 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:18:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-03-03 19:18:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 475. [2022-03-03 19:18:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 3.1624472573839664) internal successors, (1499), 474 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1499 transitions. [2022-03-03 19:18:57,505 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1499 transitions. Word has length 20 [2022-03-03 19:18:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:57,506 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 1499 transitions. [2022-03-03 19:18:57,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1499 transitions. [2022-03-03 19:18:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:57,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:57,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:57,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (248)] Ended with exit code 0 [2022-03-03 19:18:57,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437,248 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:57,715 INFO L402 AbstractCegarLoop]: === Iteration 439 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 883844495, now seen corresponding path program 48 times [2022-03-03 19:18:57,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:57,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510706822] [2022-03-03 19:18:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:58,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:58,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510706822] [2022-03-03 19:18:58,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510706822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:58,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626655369] [2022-03-03 19:18:58,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:18:58,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:58,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:58,004 INFO L229 MonitoredProcess]: Starting monitored process 249 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:18:58,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (249)] Waiting until timeout for monitored process [2022-03-03 19:18:58,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:18:58,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:58,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:18:58,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:58,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:58,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:18:59,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:59,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 176 [2022-03-03 19:18:59,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 148 [2022-03-03 19:19:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:00,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:01,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:01,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 162 [2022-03-03 19:19:01,827 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:01,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:01,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:01,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:01,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626655369] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:01,872 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:01,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:01,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135580347] [2022-03-03 19:19:01,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:01,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:01,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:01,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:01,872 INFO L87 Difference]: Start difference. First operand 475 states and 1499 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:02,091 INFO L93 Difference]: Finished difference Result 598 states and 1875 transitions. [2022-03-03 19:19:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:19:02,092 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:02,092 INFO L225 Difference]: With dead ends: 598 [2022-03-03 19:19:02,092 INFO L226 Difference]: Without dead ends: 583 [2022-03-03 19:19:02,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:19:02,093 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:02,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 343 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 340 Unchecked, 0.1s Time] [2022-03-03 19:19:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-03 19:19:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 477. [2022-03-03 19:19:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 3.1659663865546217) internal successors, (1507), 476 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1507 transitions. [2022-03-03 19:19:02,098 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1507 transitions. Word has length 20 [2022-03-03 19:19:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:02,098 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 1507 transitions. [2022-03-03 19:19:02,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1507 transitions. [2022-03-03 19:19:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:02,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:02,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:02,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (249)] Ended with exit code 0 [2022-03-03 19:19:02,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable438 [2022-03-03 19:19:02,307 INFO L402 AbstractCegarLoop]: === Iteration 440 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1417048653, now seen corresponding path program 49 times [2022-03-03 19:19:02,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:02,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443586556] [2022-03-03 19:19:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:02,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:02,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443586556] [2022-03-03 19:19:02,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443586556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:02,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139292114] [2022-03-03 19:19:02,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:19:02,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:02,708 INFO L229 MonitoredProcess]: Starting monitored process 250 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:02,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Waiting until timeout for monitored process [2022-03-03 19:19:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:02,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:19:02,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:03,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:03,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:19:04,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:04,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 188 [2022-03-03 19:19:04,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 160 [2022-03-03 19:19:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:05,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:06,329 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:06,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 147 [2022-03-03 19:19:06,903 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:06,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:06,909 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:06,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:06,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139292114] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:06,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:06,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:06,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958721070] [2022-03-03 19:19:06,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:06,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:06,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:06,965 INFO L87 Difference]: Start difference. First operand 477 states and 1507 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:07,140 INFO L93 Difference]: Finished difference Result 654 states and 2020 transitions. [2022-03-03 19:19:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:19:07,140 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:07,141 INFO L225 Difference]: With dead ends: 654 [2022-03-03 19:19:07,141 INFO L226 Difference]: Without dead ends: 647 [2022-03-03 19:19:07,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:19:07,142 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:07,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 368 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 223 Unchecked, 0.1s Time] [2022-03-03 19:19:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-03-03 19:19:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 485. [2022-03-03 19:19:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.1632231404958677) internal successors, (1531), 484 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1531 transitions. [2022-03-03 19:19:07,149 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1531 transitions. Word has length 20 [2022-03-03 19:19:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:07,149 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1531 transitions. [2022-03-03 19:19:07,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1531 transitions. [2022-03-03 19:19:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:07,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:07,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:07,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (250)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:07,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439,250 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:07,366 INFO L402 AbstractCegarLoop]: === Iteration 441 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1163554225, now seen corresponding path program 50 times [2022-03-03 19:19:07,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:07,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076063992] [2022-03-03 19:19:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:07,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:07,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:07,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076063992] [2022-03-03 19:19:07,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076063992] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:07,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561377218] [2022-03-03 19:19:07,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:19:07,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:07,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:07,795 INFO L229 MonitoredProcess]: Starting monitored process 251 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:07,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Waiting until timeout for monitored process [2022-03-03 19:19:07,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:07,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:07,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:19:07,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:08,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:08,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2022-03-03 19:19:10,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:10,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 185 [2022-03-03 19:19:10,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 153 [2022-03-03 19:19:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:10,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:11,573 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:11,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 238 [2022-03-03 19:19:12,035 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:12,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:12,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:12,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:12,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561377218] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:12,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:12,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:12,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332545030] [2022-03-03 19:19:12,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:12,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:12,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:12,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:12,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:12,081 INFO L87 Difference]: Start difference. First operand 485 states and 1531 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:12,890 INFO L93 Difference]: Finished difference Result 636 states and 1983 transitions. [2022-03-03 19:19:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:12,892 INFO L225 Difference]: With dead ends: 636 [2022-03-03 19:19:12,892 INFO L226 Difference]: Without dead ends: 629 [2022-03-03 19:19:12,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:12,892 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:12,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 369 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 333 Invalid, 0 Unknown, 307 Unchecked, 0.1s Time] [2022-03-03 19:19:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-03-03 19:19:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 497. [2022-03-03 19:19:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 3.155241935483871) internal successors, (1565), 496 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1565 transitions. [2022-03-03 19:19:12,898 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1565 transitions. Word has length 20 [2022-03-03 19:19:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:12,898 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1565 transitions. [2022-03-03 19:19:12,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1565 transitions. [2022-03-03 19:19:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:12,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:12,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:12,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:13,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440,251 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:13,107 INFO L402 AbstractCegarLoop]: === Iteration 442 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1457667815, now seen corresponding path program 51 times [2022-03-03 19:19:13,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:13,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219588824] [2022-03-03 19:19:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:13,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:13,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219588824] [2022-03-03 19:19:13,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219588824] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:13,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53319523] [2022-03-03 19:19:13,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:19:13,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:13,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:13,466 INFO L229 MonitoredProcess]: Starting monitored process 252 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Waiting until timeout for monitored process [2022-03-03 19:19:13,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:19:13,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:13,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:13,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:13,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:13,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:19:14,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:14,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-03-03 19:19:14,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 111 [2022-03-03 19:19:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:15,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:16,005 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:16,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:19:16,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:16,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:16,391 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:16,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:16,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53319523] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:16,455 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:16,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:16,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142060811] [2022-03-03 19:19:16,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:16,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:16,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:16,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:16,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:16,456 INFO L87 Difference]: Start difference. First operand 497 states and 1565 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:17,234 INFO L93 Difference]: Finished difference Result 647 states and 2000 transitions. [2022-03-03 19:19:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:17,234 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:17,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:17,235 INFO L225 Difference]: With dead ends: 647 [2022-03-03 19:19:17,235 INFO L226 Difference]: Without dead ends: 640 [2022-03-03 19:19:17,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:17,235 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:17,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 280 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-03-03 19:19:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-03-03 19:19:17,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 497. [2022-03-03 19:19:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 3.155241935483871) internal successors, (1565), 496 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1565 transitions. [2022-03-03 19:19:17,241 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1565 transitions. Word has length 20 [2022-03-03 19:19:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:17,241 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1565 transitions. [2022-03-03 19:19:17,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1565 transitions. [2022-03-03 19:19:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:17,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:17,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:17,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:17,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable441 [2022-03-03 19:19:17,443 INFO L402 AbstractCegarLoop]: === Iteration 443 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1117766483, now seen corresponding path program 52 times [2022-03-03 19:19:17,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:17,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023502890] [2022-03-03 19:19:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:17,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:17,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023502890] [2022-03-03 19:19:17,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023502890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:17,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77490341] [2022-03-03 19:19:17,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:19:17,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:17,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:17,925 INFO L229 MonitoredProcess]: Starting monitored process 253 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:17,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Waiting until timeout for monitored process [2022-03-03 19:19:17,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:19:17,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:17,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:17,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:18,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:18,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:19:19,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:19,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-03-03 19:19:19,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 108 [2022-03-03 19:19:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:19,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:20,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:20,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 117 [2022-03-03 19:19:20,682 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:20,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:19:20,686 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:20,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:19:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:20,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77490341] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:20,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:20,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:20,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002423077] [2022-03-03 19:19:20,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:20,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:20,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:20,726 INFO L87 Difference]: Start difference. First operand 497 states and 1565 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:21,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:21,167 INFO L93 Difference]: Finished difference Result 694 states and 2155 transitions. [2022-03-03 19:19:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:21,169 INFO L225 Difference]: With dead ends: 694 [2022-03-03 19:19:21,169 INFO L226 Difference]: Without dead ends: 679 [2022-03-03 19:19:21,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:19:21,169 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:21,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 310 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 367 Unchecked, 0.1s Time] [2022-03-03 19:19:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-03-03 19:19:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 509. [2022-03-03 19:19:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 3.1476377952755907) internal successors, (1599), 508 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 1599 transitions. [2022-03-03 19:19:21,177 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 1599 transitions. Word has length 20 [2022-03-03 19:19:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:21,177 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 1599 transitions. [2022-03-03 19:19:21,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 1599 transitions. [2022-03-03 19:19:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:21,178 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:21,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:21,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:21,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442,253 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:21,391 INFO L402 AbstractCegarLoop]: === Iteration 444 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:21,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 417485001, now seen corresponding path program 53 times [2022-03-03 19:19:21,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:21,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63516883] [2022-03-03 19:19:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:21,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:21,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:21,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63516883] [2022-03-03 19:19:21,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63516883] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:21,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058219261] [2022-03-03 19:19:21,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:19:21,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:21,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:21,747 INFO L229 MonitoredProcess]: Starting monitored process 254 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:21,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Waiting until timeout for monitored process [2022-03-03 19:19:21,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:21,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:21,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:21,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:22,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:19:22,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 137 [2022-03-03 19:19:22,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 113 [2022-03-03 19:19:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:22,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:23,384 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:23,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 113 [2022-03-03 19:19:23,575 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:19:23,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:19:23,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:19:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:23,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058219261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:23,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:23,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:19:23,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205331980] [2022-03-03 19:19:23,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:23,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:19:23,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:19:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:19:23,581 INFO L87 Difference]: Start difference. First operand 509 states and 1599 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:27,168 INFO L93 Difference]: Finished difference Result 884 states and 2592 transitions. [2022-03-03 19:19:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:19:27,168 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:27,169 INFO L225 Difference]: With dead ends: 884 [2022-03-03 19:19:27,169 INFO L226 Difference]: Without dead ends: 862 [2022-03-03 19:19:27,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:19:27,170 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 330 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:27,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 365 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1047 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-03-03 19:19:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-03-03 19:19:27,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 483. [2022-03-03 19:19:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 3.163900414937759) internal successors, (1525), 482 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1525 transitions. [2022-03-03 19:19:27,176 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1525 transitions. Word has length 20 [2022-03-03 19:19:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:27,176 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1525 transitions. [2022-03-03 19:19:27,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1525 transitions. [2022-03-03 19:19:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:27,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:27,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:27,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:27,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 254 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2022-03-03 19:19:27,378 INFO L402 AbstractCegarLoop]: === Iteration 445 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 241611533, now seen corresponding path program 54 times [2022-03-03 19:19:27,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:27,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698871342] [2022-03-03 19:19:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:27,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:27,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698871342] [2022-03-03 19:19:27,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698871342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:27,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296694927] [2022-03-03 19:19:27,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:19:27,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:27,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:27,904 INFO L229 MonitoredProcess]: Starting monitored process 255 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:27,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Waiting until timeout for monitored process [2022-03-03 19:19:27,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:19:27,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:27,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:27,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:28,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:28,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:19:29,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:29,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 137 [2022-03-03 19:19:29,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 115 [2022-03-03 19:19:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:29,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:30,439 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:30,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 132 [2022-03-03 19:19:30,812 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:30,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:19:30,818 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:30,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:19:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:30,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296694927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:30,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:30,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:30,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655317162] [2022-03-03 19:19:30,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:30,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:30,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:30,889 INFO L87 Difference]: Start difference. First operand 483 states and 1525 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:31,622 INFO L93 Difference]: Finished difference Result 623 states and 1956 transitions. [2022-03-03 19:19:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:31,624 INFO L225 Difference]: With dead ends: 623 [2022-03-03 19:19:31,624 INFO L226 Difference]: Without dead ends: 616 [2022-03-03 19:19:31,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:31,624 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:31,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 294 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 329 Invalid, 0 Unknown, 157 Unchecked, 0.2s Time] [2022-03-03 19:19:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-03-03 19:19:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 487. [2022-03-03 19:19:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 3.1666666666666665) internal successors, (1539), 486 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1539 transitions. [2022-03-03 19:19:31,632 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1539 transitions. Word has length 20 [2022-03-03 19:19:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:31,632 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1539 transitions. [2022-03-03 19:19:31,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1539 transitions. [2022-03-03 19:19:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:31,633 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:31,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:31,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Ended with exit code 0 [2022-03-03 19:19:31,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2022-03-03 19:19:31,851 INFO L402 AbstractCegarLoop]: === Iteration 446 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1752853623, now seen corresponding path program 55 times [2022-03-03 19:19:31,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:31,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450357459] [2022-03-03 19:19:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:32,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:32,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450357459] [2022-03-03 19:19:32,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450357459] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:32,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346108435] [2022-03-03 19:19:32,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:19:32,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:32,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:32,191 INFO L229 MonitoredProcess]: Starting monitored process 256 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:32,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Waiting until timeout for monitored process [2022-03-03 19:19:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:32,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:19:32,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:32,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:32,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:19:33,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:33,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-03-03 19:19:33,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-03-03 19:19:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:35,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:36,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:36,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 150 [2022-03-03 19:19:36,813 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:36,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:36,819 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:36,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:36,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346108435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:36,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:36,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:36,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668783180] [2022-03-03 19:19:36,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:36,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:36,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:36,886 INFO L87 Difference]: Start difference. First operand 487 states and 1539 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:37,314 INFO L93 Difference]: Finished difference Result 680 states and 2146 transitions. [2022-03-03 19:19:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:19:37,315 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:37,316 INFO L225 Difference]: With dead ends: 680 [2022-03-03 19:19:37,316 INFO L226 Difference]: Without dead ends: 673 [2022-03-03 19:19:37,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:19:37,316 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 102 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:37,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 250 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 399 Unchecked, 0.1s Time] [2022-03-03 19:19:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-03-03 19:19:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 494. [2022-03-03 19:19:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.1683569979716024) internal successors, (1562), 493 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1562 transitions. [2022-03-03 19:19:37,322 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1562 transitions. Word has length 20 [2022-03-03 19:19:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:37,322 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1562 transitions. [2022-03-03 19:19:37,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1562 transitions. [2022-03-03 19:19:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:37,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:37,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:37,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:37,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 256 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable445 [2022-03-03 19:19:37,538 INFO L402 AbstractCegarLoop]: === Iteration 447 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:37,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:37,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1730257075, now seen corresponding path program 56 times [2022-03-03 19:19:37,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:37,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403373731] [2022-03-03 19:19:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:37,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:37,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403373731] [2022-03-03 19:19:37,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403373731] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:37,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070553361] [2022-03-03 19:19:37,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:19:37,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:37,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:37,983 INFO L229 MonitoredProcess]: Starting monitored process 257 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:37,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Waiting until timeout for monitored process [2022-03-03 19:19:38,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:38,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:38,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:38,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:38,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:38,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:19:38,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:38,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 190 [2022-03-03 19:19:38,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 160 [2022-03-03 19:19:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:39,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:40,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:40,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 131 [2022-03-03 19:19:40,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:40,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:40,833 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:40,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:40,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070553361] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:40,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:40,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:40,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811898048] [2022-03-03 19:19:40,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:40,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:40,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:40,887 INFO L87 Difference]: Start difference. First operand 494 states and 1562 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:41,799 INFO L93 Difference]: Finished difference Result 639 states and 2008 transitions. [2022-03-03 19:19:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:41,799 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:41,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:41,800 INFO L225 Difference]: With dead ends: 639 [2022-03-03 19:19:41,800 INFO L226 Difference]: Without dead ends: 632 [2022-03-03 19:19:41,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:41,800 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:41,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 316 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-03-03 19:19:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-03-03 19:19:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 492. [2022-03-03 19:19:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.169042769857434) internal successors, (1556), 491 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1556 transitions. [2022-03-03 19:19:41,806 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1556 transitions. Word has length 20 [2022-03-03 19:19:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:41,806 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1556 transitions. [2022-03-03 19:19:41,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1556 transitions. [2022-03-03 19:19:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:41,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:41,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:41,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Ended with exit code 0 [2022-03-03 19:19:42,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446,257 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:42,022 INFO L402 AbstractCegarLoop]: === Iteration 448 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1974302859, now seen corresponding path program 57 times [2022-03-03 19:19:42,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:42,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704332019] [2022-03-03 19:19:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:42,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:42,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704332019] [2022-03-03 19:19:42,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704332019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:42,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110602147] [2022-03-03 19:19:42,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:19:42,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:42,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:42,449 INFO L229 MonitoredProcess]: Starting monitored process 258 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:42,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Waiting until timeout for monitored process [2022-03-03 19:19:42,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:19:42,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:42,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:19:42,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:42,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:42,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:19:43,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:43,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 150 [2022-03-03 19:19:43,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 126 [2022-03-03 19:19:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:44,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:45,009 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:45,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 163 [2022-03-03 19:19:45,493 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:45,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:19:45,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:45,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:19:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:45,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110602147] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:45,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:45,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:45,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947165054] [2022-03-03 19:19:45,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:45,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:45,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:45,541 INFO L87 Difference]: Start difference. First operand 492 states and 1556 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:46,246 INFO L93 Difference]: Finished difference Result 659 states and 2074 transitions. [2022-03-03 19:19:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:19:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:46,247 INFO L225 Difference]: With dead ends: 659 [2022-03-03 19:19:46,247 INFO L226 Difference]: Without dead ends: 652 [2022-03-03 19:19:46,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:19:46,247 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 92 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 495 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:46,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 315 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 495 Unchecked, 0.1s Time] [2022-03-03 19:19:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-03-03 19:19:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 498. [2022-03-03 19:19:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.1670020120724347) internal successors, (1574), 497 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1574 transitions. [2022-03-03 19:19:46,263 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1574 transitions. Word has length 20 [2022-03-03 19:19:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:46,263 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1574 transitions. [2022-03-03 19:19:46,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1574 transitions. [2022-03-03 19:19:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:46,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:46,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:46,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Ended with exit code 0 [2022-03-03 19:19:46,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447,258 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:46,464 INFO L402 AbstractCegarLoop]: === Iteration 449 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:46,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash 300557603, now seen corresponding path program 58 times [2022-03-03 19:19:46,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:46,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522750676] [2022-03-03 19:19:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:47,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:47,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522750676] [2022-03-03 19:19:47,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522750676] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:47,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394082842] [2022-03-03 19:19:47,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:19:47,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:47,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:47,023 INFO L229 MonitoredProcess]: Starting monitored process 259 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:47,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Waiting until timeout for monitored process [2022-03-03 19:19:47,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:19:47,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:47,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:47,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:47,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:47,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:19:48,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:48,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-03-03 19:19:48,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-03-03 19:19:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:48,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:49,493 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:49,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 117 [2022-03-03 19:19:49,735 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:49,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:19:49,738 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:49,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:19:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:49,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394082842] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:49,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:49,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:49,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158950789] [2022-03-03 19:19:49,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:49,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:49,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:49,782 INFO L87 Difference]: Start difference. First operand 498 states and 1574 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:50,441 INFO L93 Difference]: Finished difference Result 774 states and 2394 transitions. [2022-03-03 19:19:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:19:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:50,442 INFO L225 Difference]: With dead ends: 774 [2022-03-03 19:19:50,442 INFO L226 Difference]: Without dead ends: 760 [2022-03-03 19:19:50,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:19:50,442 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 125 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:50,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 353 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 303 Invalid, 0 Unknown, 167 Unchecked, 0.1s Time] [2022-03-03 19:19:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-03-03 19:19:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 504. [2022-03-03 19:19:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.172962226640159) internal successors, (1596), 503 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1596 transitions. [2022-03-03 19:19:50,449 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1596 transitions. Word has length 20 [2022-03-03 19:19:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:50,449 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1596 transitions. [2022-03-03 19:19:50,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1596 transitions. [2022-03-03 19:19:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:50,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:50,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:50,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Ended with exit code 0 [2022-03-03 19:19:50,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2022-03-03 19:19:50,663 INFO L402 AbstractCegarLoop]: === Iteration 450 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2020090601, now seen corresponding path program 59 times [2022-03-03 19:19:50,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:50,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314727621] [2022-03-03 19:19:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:51,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:51,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314727621] [2022-03-03 19:19:51,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314727621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:51,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97927374] [2022-03-03 19:19:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:19:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:51,168 INFO L229 MonitoredProcess]: Starting monitored process 260 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:51,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Waiting until timeout for monitored process [2022-03-03 19:19:51,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:51,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:51,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:51,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:51,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:19:51,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 154 [2022-03-03 19:19:51,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 130 [2022-03-03 19:19:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:52,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:53,181 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:53,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 112 [2022-03-03 19:19:53,500 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:19:53,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:19:53,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:19:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:53,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97927374] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:53,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:53,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:19:53,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596622686] [2022-03-03 19:19:53,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:53,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:19:53,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:19:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:19:53,509 INFO L87 Difference]: Start difference. First operand 504 states and 1596 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:57,667 INFO L93 Difference]: Finished difference Result 994 states and 2881 transitions. [2022-03-03 19:19:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:19:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:19:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:57,668 INFO L225 Difference]: With dead ends: 994 [2022-03-03 19:19:57,668 INFO L226 Difference]: Without dead ends: 822 [2022-03-03 19:19:57,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=381, Invalid=1875, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:19:57,669 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 336 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:57,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 428 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1207 Invalid, 0 Unknown, 25 Unchecked, 0.7s Time] [2022-03-03 19:19:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-03 19:19:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 550. [2022-03-03 19:19:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 2.8451730418943533) internal successors, (1562), 549 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1562 transitions. [2022-03-03 19:19:57,675 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1562 transitions. Word has length 20 [2022-03-03 19:19:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:57,675 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 1562 transitions. [2022-03-03 19:19:57,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1562 transitions. [2022-03-03 19:19:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:57,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:57,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:57,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:57,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449,260 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:57,887 INFO L402 AbstractCegarLoop]: === Iteration 451 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash 778877707, now seen corresponding path program 60 times [2022-03-03 19:19:57,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:57,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433716907] [2022-03-03 19:19:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:58,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:58,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433716907] [2022-03-03 19:19:58,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433716907] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:58,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283770877] [2022-03-03 19:19:58,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:19:58,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:58,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:58,172 INFO L229 MonitoredProcess]: Starting monitored process 261 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:19:58,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Waiting until timeout for monitored process [2022-03-03 19:19:58,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:19:58,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:58,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:19:58,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:58,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:58,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:19:59,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:59,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 189 [2022-03-03 19:19:59,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 161 [2022-03-03 19:19:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:59,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:00,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:00,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 128 [2022-03-03 19:20:00,340 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:00,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:20:00,344 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:00,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:20:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:00,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283770877] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:00,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:00,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:00,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135228607] [2022-03-03 19:20:00,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:00,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:00,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:00,395 INFO L87 Difference]: Start difference. First operand 550 states and 1562 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:00,648 INFO L93 Difference]: Finished difference Result 715 states and 2059 transitions. [2022-03-03 19:20:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:20:00,649 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:00,650 INFO L225 Difference]: With dead ends: 715 [2022-03-03 19:20:00,650 INFO L226 Difference]: Without dead ends: 708 [2022-03-03 19:20:00,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:20:00,650 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 59 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:00,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 286 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 319 Unchecked, 0.1s Time] [2022-03-03 19:20:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-03-03 19:20:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 556. [2022-03-03 19:20:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.8468468468468466) internal successors, (1580), 555 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1580 transitions. [2022-03-03 19:20:00,656 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1580 transitions. Word has length 20 [2022-03-03 19:20:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:00,656 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1580 transitions. [2022-03-03 19:20:00,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1580 transitions. [2022-03-03 19:20:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:00,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:00,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:00,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Ended with exit code 0 [2022-03-03 19:20:00,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450,261 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:00,863 INFO L402 AbstractCegarLoop]: === Iteration 452 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 801474255, now seen corresponding path program 61 times [2022-03-03 19:20:00,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:00,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572764994] [2022-03-03 19:20:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:01,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:01,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572764994] [2022-03-03 19:20:01,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572764994] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:01,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567198980] [2022-03-03 19:20:01,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:20:01,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:01,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:01,472 INFO L229 MonitoredProcess]: Starting monitored process 262 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:01,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Waiting until timeout for monitored process [2022-03-03 19:20:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:01,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:20:01,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:01,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:01,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:20:03,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:03,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 188 [2022-03-03 19:20:03,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 160 [2022-03-03 19:20:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:04,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:05,660 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:05,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 153 [2022-03-03 19:20:06,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:06,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:20:06,141 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:06,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:20:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:06,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567198980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:06,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:06,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:06,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703444883] [2022-03-03 19:20:06,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:06,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:06,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:06,178 INFO L87 Difference]: Start difference. First operand 556 states and 1580 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:07,532 INFO L93 Difference]: Finished difference Result 868 states and 2474 transitions. [2022-03-03 19:20:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:20:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:07,534 INFO L225 Difference]: With dead ends: 868 [2022-03-03 19:20:07,534 INFO L226 Difference]: Without dead ends: 848 [2022-03-03 19:20:07,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:20:07,534 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 88 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 480 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 250 Unchecked, 0.2s Time] [2022-03-03 19:20:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-03-03 19:20:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 562. [2022-03-03 19:20:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 2.8484848484848486) internal successors, (1598), 561 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1598 transitions. [2022-03-03 19:20:07,541 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1598 transitions. Word has length 20 [2022-03-03 19:20:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:07,541 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1598 transitions. [2022-03-03 19:20:07,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1598 transitions. [2022-03-03 19:20:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:07,542 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:07,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:07,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:07,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451,262 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:07,757 INFO L402 AbstractCegarLoop]: === Iteration 453 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1398320089, now seen corresponding path program 62 times [2022-03-03 19:20:07,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:07,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000503266] [2022-03-03 19:20:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:07,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:08,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:08,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000503266] [2022-03-03 19:20:08,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000503266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:08,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202232223] [2022-03-03 19:20:08,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:20:08,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:08,028 INFO L229 MonitoredProcess]: Starting monitored process 263 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:08,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Waiting until timeout for monitored process [2022-03-03 19:20:08,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:08,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:08,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:20:08,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:08,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:08,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:20:09,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:09,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 178 [2022-03-03 19:20:09,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 150 [2022-03-03 19:20:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:10,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:12,038 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:12,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 150 [2022-03-03 19:20:12,701 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:12,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:20:12,707 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:12,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:20:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:12,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202232223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:12,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:12,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:12,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806238766] [2022-03-03 19:20:12,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:12,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:12,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:12,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:12,789 INFO L87 Difference]: Start difference. First operand 562 states and 1598 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:13,649 INFO L93 Difference]: Finished difference Result 708 states and 2015 transitions. [2022-03-03 19:20:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:20:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:13,650 INFO L225 Difference]: With dead ends: 708 [2022-03-03 19:20:13,650 INFO L226 Difference]: Without dead ends: 701 [2022-03-03 19:20:13,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:20:13,650 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:13,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 310 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 80 Unchecked, 0.1s Time] [2022-03-03 19:20:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-03 19:20:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 566. [2022-03-03 19:20:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 2.8530973451327433) internal successors, (1612), 565 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1612 transitions. [2022-03-03 19:20:13,656 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1612 transitions. Word has length 20 [2022-03-03 19:20:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:13,656 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1612 transitions. [2022-03-03 19:20:13,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1612 transitions. [2022-03-03 19:20:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:13,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:13,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:13,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:13,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable452 [2022-03-03 19:20:13,873 INFO L402 AbstractCegarLoop]: === Iteration 454 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash 321212909, now seen corresponding path program 63 times [2022-03-03 19:20:13,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:13,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384340424] [2022-03-03 19:20:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:14,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:14,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384340424] [2022-03-03 19:20:14,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384340424] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:14,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769675473] [2022-03-03 19:20:14,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:20:14,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:14,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:14,132 INFO L229 MonitoredProcess]: Starting monitored process 264 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:14,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Waiting until timeout for monitored process [2022-03-03 19:20:14,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:20:14,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:14,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:20:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:14,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:14,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:20:15,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:15,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 169 [2022-03-03 19:20:15,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 143 [2022-03-03 19:20:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:16,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:17,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:17,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 144 [2022-03-03 19:20:17,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:17,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:20:17,847 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:17,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:20:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:17,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769675473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:17,898 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:17,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:17,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383694794] [2022-03-03 19:20:17,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:17,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:17,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:17,899 INFO L87 Difference]: Start difference. First operand 566 states and 1612 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:18,278 INFO L93 Difference]: Finished difference Result 697 states and 2000 transitions. [2022-03-03 19:20:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:20:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:18,279 INFO L225 Difference]: With dead ends: 697 [2022-03-03 19:20:18,279 INFO L226 Difference]: Without dead ends: 682 [2022-03-03 19:20:18,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:20:18,279 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:18,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 314 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 367 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-03-03 19:20:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-03-03 19:20:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 566. [2022-03-03 19:20:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 2.8530973451327433) internal successors, (1612), 565 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1612 transitions. [2022-03-03 19:20:18,285 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1612 transitions. Word has length 20 [2022-03-03 19:20:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:18,285 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1612 transitions. [2022-03-03 19:20:18,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1612 transitions. [2022-03-03 19:20:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:18,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:18,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:18,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable453 [2022-03-03 19:20:18,499 INFO L402 AbstractCegarLoop]: === Iteration 455 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1372544605, now seen corresponding path program 64 times [2022-03-03 19:20:18,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:18,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865153556] [2022-03-03 19:20:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:18,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:18,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865153556] [2022-03-03 19:20:18,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865153556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:18,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274020826] [2022-03-03 19:20:18,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:20:18,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:18,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:18,746 INFO L229 MonitoredProcess]: Starting monitored process 265 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:18,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Waiting until timeout for monitored process [2022-03-03 19:20:18,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:20:18,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:18,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:18,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:19,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:19,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:20:19,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:19,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 169 [2022-03-03 19:20:19,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 143 [2022-03-03 19:20:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:20,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:20,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:20,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-03-03 19:20:21,100 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:21,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:20:21,117 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:21,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:20:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:21,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274020826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:21,157 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:21,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:21,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222876532] [2022-03-03 19:20:21,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:21,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:21,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:21,158 INFO L87 Difference]: Start difference. First operand 566 states and 1612 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:21,446 INFO L93 Difference]: Finished difference Result 724 states and 2091 transitions. [2022-03-03 19:20:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:20:21,446 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:21,447 INFO L225 Difference]: With dead ends: 724 [2022-03-03 19:20:21,447 INFO L226 Difference]: Without dead ends: 717 [2022-03-03 19:20:21,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:20:21,447 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:21,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 314 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 275 Unchecked, 0.1s Time] [2022-03-03 19:20:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-03-03 19:20:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 566. [2022-03-03 19:20:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 2.8530973451327433) internal successors, (1612), 565 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1612 transitions. [2022-03-03 19:20:21,453 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1612 transitions. Word has length 20 [2022-03-03 19:20:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:21,453 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1612 transitions. [2022-03-03 19:20:21,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1612 transitions. [2022-03-03 19:20:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:21,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:21,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:21,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Ended with exit code 0 [2022-03-03 19:20:21,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 265 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable454 [2022-03-03 19:20:21,666 INFO L402 AbstractCegarLoop]: === Iteration 456 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1349948057, now seen corresponding path program 65 times [2022-03-03 19:20:21,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:21,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715930535] [2022-03-03 19:20:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:21,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:22,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:22,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715930535] [2022-03-03 19:20:22,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715930535] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:22,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202319372] [2022-03-03 19:20:22,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:20:22,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:22,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:22,102 INFO L229 MonitoredProcess]: Starting monitored process 266 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:22,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Waiting until timeout for monitored process [2022-03-03 19:20:22,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:20:22,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:22,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:22,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:22,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:20:22,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 186 [2022-03-03 19:20:22,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 156 [2022-03-03 19:20:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:23,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:23,625 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:23,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 111 [2022-03-03 19:20:23,840 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:20:23,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:20:23,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:20:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:23,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202319372] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:23,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:23,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:20:23,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17896729] [2022-03-03 19:20:23,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:23,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:20:23,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:20:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:20:23,847 INFO L87 Difference]: Start difference. First operand 566 states and 1612 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:27,305 INFO L93 Difference]: Finished difference Result 884 states and 2378 transitions. [2022-03-03 19:20:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:20:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:27,307 INFO L225 Difference]: With dead ends: 884 [2022-03-03 19:20:27,307 INFO L226 Difference]: Without dead ends: 847 [2022-03-03 19:20:27,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=337, Invalid=1825, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:20:27,308 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 334 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:27,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 444 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1180 Invalid, 0 Unknown, 69 Unchecked, 0.5s Time] [2022-03-03 19:20:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-03-03 19:20:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 552. [2022-03-03 19:20:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 2.851179673321234) internal successors, (1571), 551 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1571 transitions. [2022-03-03 19:20:27,318 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1571 transitions. Word has length 20 [2022-03-03 19:20:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:27,318 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1571 transitions. [2022-03-03 19:20:27,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1571 transitions. [2022-03-03 19:20:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:27,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:27,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:27,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:27,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable455 [2022-03-03 19:20:27,535 INFO L402 AbstractCegarLoop]: === Iteration 457 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash 770517113, now seen corresponding path program 66 times [2022-03-03 19:20:27,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:27,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281611448] [2022-03-03 19:20:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:27,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:27,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281611448] [2022-03-03 19:20:27,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281611448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:27,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706943758] [2022-03-03 19:20:27,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:20:27,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:27,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:27,852 INFO L229 MonitoredProcess]: Starting monitored process 267 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:27,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Waiting until timeout for monitored process [2022-03-03 19:20:27,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:20:27,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:27,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:27,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:28,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:28,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:20:29,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:29,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:20:29,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:20:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:29,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:30,736 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:30,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-03-03 19:20:31,163 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:31,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:20:31,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:31,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:20:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:31,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706943758] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:31,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:31,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:31,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732945251] [2022-03-03 19:20:31,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:31,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:31,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:31,223 INFO L87 Difference]: Start difference. First operand 552 states and 1571 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:31,585 INFO L93 Difference]: Finished difference Result 679 states and 1925 transitions. [2022-03-03 19:20:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:20:31,586 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:31,586 INFO L225 Difference]: With dead ends: 679 [2022-03-03 19:20:31,587 INFO L226 Difference]: Without dead ends: 672 [2022-03-03 19:20:31,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:20:31,587 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 68 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:31,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 330 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 402 Invalid, 0 Unknown, 414 Unchecked, 0.2s Time] [2022-03-03 19:20:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-03-03 19:20:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 552. [2022-03-03 19:20:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 2.851179673321234) internal successors, (1571), 551 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1571 transitions. [2022-03-03 19:20:31,593 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1571 transitions. Word has length 20 [2022-03-03 19:20:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:31,593 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1571 transitions. [2022-03-03 19:20:31,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1571 transitions. [2022-03-03 19:20:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:31,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:31,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:31,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:31,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456,267 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:31,810 INFO L402 AbstractCegarLoop]: === Iteration 458 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1083145359, now seen corresponding path program 67 times [2022-03-03 19:20:31,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:31,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504496455] [2022-03-03 19:20:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:32,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:32,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504496455] [2022-03-03 19:20:32,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504496455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:32,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334485068] [2022-03-03 19:20:32,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:20:32,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:32,209 INFO L229 MonitoredProcess]: Starting monitored process 268 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:32,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Waiting until timeout for monitored process [2022-03-03 19:20:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:32,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:32,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:32,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:32,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:20:33,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:33,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 144 [2022-03-03 19:20:33,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 120 [2022-03-03 19:20:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:34,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:34,797 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:34,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-03-03 19:20:35,219 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:35,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:20:35,225 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:35,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:20:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:35,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334485068] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:35,280 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:35,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:35,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765637734] [2022-03-03 19:20:35,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:35,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:35,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:35,281 INFO L87 Difference]: Start difference. First operand 552 states and 1571 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:36,053 INFO L93 Difference]: Finished difference Result 683 states and 1956 transitions. [2022-03-03 19:20:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:20:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:36,054 INFO L225 Difference]: With dead ends: 683 [2022-03-03 19:20:36,054 INFO L226 Difference]: Without dead ends: 676 [2022-03-03 19:20:36,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:20:36,055 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:36,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 340 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 136 Unchecked, 0.2s Time] [2022-03-03 19:20:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-03-03 19:20:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 555. [2022-03-03 19:20:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 2.8465703971119134) internal successors, (1577), 554 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1577 transitions. [2022-03-03 19:20:36,061 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1577 transitions. Word has length 20 [2022-03-03 19:20:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:36,061 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1577 transitions. [2022-03-03 19:20:36,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1577 transitions. [2022-03-03 19:20:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:36,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:36,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:36,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Ended with exit code 0 [2022-03-03 19:20:36,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 268 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable457 [2022-03-03 19:20:36,271 INFO L402 AbstractCegarLoop]: === Iteration 459 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -888723249, now seen corresponding path program 68 times [2022-03-03 19:20:36,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:36,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400472844] [2022-03-03 19:20:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:36,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:36,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400472844] [2022-03-03 19:20:36,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400472844] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:36,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380301214] [2022-03-03 19:20:36,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:20:36,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:36,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:36,602 INFO L229 MonitoredProcess]: Starting monitored process 269 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:36,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Waiting until timeout for monitored process [2022-03-03 19:20:36,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:36,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:36,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:37,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:37,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:20:37,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:37,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 185 [2022-03-03 19:20:37,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 157 [2022-03-03 19:20:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:37,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:38,464 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:38,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-03-03 19:20:38,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:38,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:20:38,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:38,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:20:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:38,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380301214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:38,981 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:38,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:38,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143778684] [2022-03-03 19:20:38,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:38,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:38,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:38,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:38,982 INFO L87 Difference]: Start difference. First operand 555 states and 1577 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:39,333 INFO L93 Difference]: Finished difference Result 667 states and 1882 transitions. [2022-03-03 19:20:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:20:39,334 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:39,335 INFO L225 Difference]: With dead ends: 667 [2022-03-03 19:20:39,335 INFO L226 Difference]: Without dead ends: 660 [2022-03-03 19:20:39,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2022-03-03 19:20:39,335 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 86 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:39,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 256 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 304 Invalid, 0 Unknown, 351 Unchecked, 0.1s Time] [2022-03-03 19:20:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-03-03 19:20:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 558. [2022-03-03 19:20:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 2.8438061041292637) internal successors, (1584), 557 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1584 transitions. [2022-03-03 19:20:39,341 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1584 transitions. Word has length 20 [2022-03-03 19:20:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:39,341 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1584 transitions. [2022-03-03 19:20:39,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1584 transitions. [2022-03-03 19:20:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:39,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:39,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:39,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Ended with exit code 0 [2022-03-03 19:20:39,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable458 [2022-03-03 19:20:39,542 INFO L402 AbstractCegarLoop]: === Iteration 460 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1781143823, now seen corresponding path program 69 times [2022-03-03 19:20:39,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:39,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643819297] [2022-03-03 19:20:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:39,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:39,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643819297] [2022-03-03 19:20:39,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643819297] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:39,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858746516] [2022-03-03 19:20:39,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:20:39,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:39,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:39,964 INFO L229 MonitoredProcess]: Starting monitored process 270 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:39,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Waiting until timeout for monitored process [2022-03-03 19:20:39,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:20:39,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:40,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:40,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:40,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:40,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:20:41,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:41,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:20:41,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:20:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:42,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:42,737 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:42,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-03-03 19:20:43,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:43,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:20:43,219 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:43,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:20:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:43,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858746516] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:43,289 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:43,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:43,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073901020] [2022-03-03 19:20:43,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:43,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:43,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:43,289 INFO L87 Difference]: Start difference. First operand 558 states and 1584 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:44,233 INFO L93 Difference]: Finished difference Result 686 states and 1962 transitions. [2022-03-03 19:20:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:20:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:44,234 INFO L225 Difference]: With dead ends: 686 [2022-03-03 19:20:44,234 INFO L226 Difference]: Without dead ends: 680 [2022-03-03 19:20:44,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:20:44,234 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:44,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 307 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 302 Invalid, 0 Unknown, 103 Unchecked, 0.2s Time] [2022-03-03 19:20:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-03 19:20:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 557. [2022-03-03 19:20:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 2.8453237410071943) internal successors, (1582), 556 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1582 transitions. [2022-03-03 19:20:44,240 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1582 transitions. Word has length 20 [2022-03-03 19:20:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:44,240 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 1582 transitions. [2022-03-03 19:20:44,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1582 transitions. [2022-03-03 19:20:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:44,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:44,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:44,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Ended with exit code 0 [2022-03-03 19:20:44,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 270 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable459 [2022-03-03 19:20:44,446 INFO L402 AbstractCegarLoop]: === Iteration 461 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1234850963, now seen corresponding path program 70 times [2022-03-03 19:20:44,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:44,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693225539] [2022-03-03 19:20:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:44,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:44,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693225539] [2022-03-03 19:20:44,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693225539] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:44,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378918136] [2022-03-03 19:20:44,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:20:44,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:44,784 INFO L229 MonitoredProcess]: Starting monitored process 271 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:44,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Waiting until timeout for monitored process [2022-03-03 19:20:44,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:20:44,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:44,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:20:44,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:45,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:45,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:20:45,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:45,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:20:45,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:20:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:47,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:48,321 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:48,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 161 [2022-03-03 19:20:48,867 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:48,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:20:48,871 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:48,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:20:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:48,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378918136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:48,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:48,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:48,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962430503] [2022-03-03 19:20:48,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:48,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:48,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:48,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:48,920 INFO L87 Difference]: Start difference. First operand 557 states and 1582 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:49,755 INFO L93 Difference]: Finished difference Result 677 states and 1907 transitions. [2022-03-03 19:20:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:20:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:49,756 INFO L225 Difference]: With dead ends: 677 [2022-03-03 19:20:49,756 INFO L226 Difference]: Without dead ends: 670 [2022-03-03 19:20:49,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:20:49,757 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 88 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 545 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:49,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 294 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 545 Unchecked, 0.1s Time] [2022-03-03 19:20:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-03 19:20:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 557. [2022-03-03 19:20:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 2.8453237410071943) internal successors, (1582), 556 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1582 transitions. [2022-03-03 19:20:49,763 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1582 transitions. Word has length 20 [2022-03-03 19:20:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:49,763 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 1582 transitions. [2022-03-03 19:20:49,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1582 transitions. [2022-03-03 19:20:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:49,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:49,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:49,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:49,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460,271 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:49,975 INFO L402 AbstractCegarLoop]: === Iteration 462 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1257447511, now seen corresponding path program 71 times [2022-03-03 19:20:49,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:49,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640471856] [2022-03-03 19:20:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:50,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:50,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640471856] [2022-03-03 19:20:50,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640471856] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:50,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923899641] [2022-03-03 19:20:50,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:20:50,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:50,365 INFO L229 MonitoredProcess]: Starting monitored process 272 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:50,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Waiting until timeout for monitored process [2022-03-03 19:20:50,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:50,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:50,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:20:50,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:50,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:20:50,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-03-03 19:20:50,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-03-03 19:20:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:51,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:52,282 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:52,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 111 [2022-03-03 19:20:52,685 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:20:52,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:20:52,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:20:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:52,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923899641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:52,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:52,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:20:52,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179690320] [2022-03-03 19:20:52,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:52,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:20:52,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:20:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:20:52,696 INFO L87 Difference]: Start difference. First operand 557 states and 1582 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:55,772 INFO L93 Difference]: Finished difference Result 793 states and 2155 transitions. [2022-03-03 19:20:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:20:55,772 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:20:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:55,773 INFO L225 Difference]: With dead ends: 793 [2022-03-03 19:20:55,773 INFO L226 Difference]: Without dead ends: 754 [2022-03-03 19:20:55,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=297, Invalid=1683, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:20:55,773 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 238 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:55,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 373 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:20:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-03-03 19:20:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 550. [2022-03-03 19:20:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 2.854280510018215) internal successors, (1567), 549 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1567 transitions. [2022-03-03 19:20:55,780 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1567 transitions. Word has length 20 [2022-03-03 19:20:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:55,780 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 1567 transitions. [2022-03-03 19:20:55,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1567 transitions. [2022-03-03 19:20:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:55,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:55,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:55,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:55,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461,272 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:55,997 INFO L402 AbstractCegarLoop]: === Iteration 463 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1376966201, now seen corresponding path program 72 times [2022-03-03 19:20:55,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:55,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670161188] [2022-03-03 19:20:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:56,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:56,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670161188] [2022-03-03 19:20:56,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670161188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:56,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516014911] [2022-03-03 19:20:56,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:20:56,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:56,427 INFO L229 MonitoredProcess]: Starting monitored process 273 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:20:56,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Waiting until timeout for monitored process [2022-03-03 19:20:56,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:20:56,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:56,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:20:56,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:56,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:56,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:20:58,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:58,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 172 [2022-03-03 19:20:58,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 146 [2022-03-03 19:20:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:58,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:59,293 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:59,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 162 [2022-03-03 19:20:59,983 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:59,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:20:59,989 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:59,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:21:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:00,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516014911] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:00,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:00,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:00,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052649952] [2022-03-03 19:21:00,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:00,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:00,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:00,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:00,035 INFO L87 Difference]: Start difference. First operand 550 states and 1567 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:00,836 INFO L93 Difference]: Finished difference Result 673 states and 1935 transitions. [2022-03-03 19:21:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:00,838 INFO L225 Difference]: With dead ends: 673 [2022-03-03 19:21:00,838 INFO L226 Difference]: Without dead ends: 666 [2022-03-03 19:21:00,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:21:00,838 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:00,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 330 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2022-03-03 19:21:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-03-03 19:21:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 558. [2022-03-03 19:21:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 2.85278276481149) internal successors, (1589), 557 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1589 transitions. [2022-03-03 19:21:00,844 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1589 transitions. Word has length 20 [2022-03-03 19:21:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:00,844 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1589 transitions. [2022-03-03 19:21:00,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1589 transitions. [2022-03-03 19:21:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:00,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:00,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:00,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:01,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable462 [2022-03-03 19:21:01,047 INFO L402 AbstractCegarLoop]: === Iteration 464 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -296779055, now seen corresponding path program 73 times [2022-03-03 19:21:01,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:01,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894162551] [2022-03-03 19:21:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:01,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:01,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:01,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894162551] [2022-03-03 19:21:01,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894162551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:01,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732475007] [2022-03-03 19:21:01,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:01,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:01,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:01,611 INFO L229 MonitoredProcess]: Starting monitored process 274 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:01,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Waiting until timeout for monitored process [2022-03-03 19:21:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:01,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:21:01,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:02,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:02,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:02,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:02,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-03-03 19:21:02,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-03-03 19:21:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:03,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:03,938 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:03,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 127 [2022-03-03 19:21:04,247 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:04,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:21:04,252 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:04,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:21:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:04,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732475007] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:04,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:04,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:04,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089005872] [2022-03-03 19:21:04,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:04,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:04,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:04,297 INFO L87 Difference]: Start difference. First operand 558 states and 1589 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:04,906 INFO L93 Difference]: Finished difference Result 680 states and 1942 transitions. [2022-03-03 19:21:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:04,907 INFO L225 Difference]: With dead ends: 680 [2022-03-03 19:21:04,907 INFO L226 Difference]: Without dead ends: 673 [2022-03-03 19:21:04,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:21:04,908 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 64 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:04,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 249 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-03-03 19:21:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-03-03 19:21:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 554. [2022-03-03 19:21:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 2.8553345388788425) internal successors, (1579), 553 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1579 transitions. [2022-03-03 19:21:04,913 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1579 transitions. Word has length 20 [2022-03-03 19:21:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:04,913 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1579 transitions. [2022-03-03 19:21:04,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1579 transitions. [2022-03-03 19:21:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:04,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:04,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:04,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Ended with exit code 0 [2022-03-03 19:21:05,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable463 [2022-03-03 19:21:05,127 INFO L402 AbstractCegarLoop]: === Iteration 465 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1422753943, now seen corresponding path program 74 times [2022-03-03 19:21:05,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:05,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774250822] [2022-03-03 19:21:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:05,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:05,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:05,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774250822] [2022-03-03 19:21:05,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774250822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:05,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330109434] [2022-03-03 19:21:05,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:21:05,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:05,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:05,655 INFO L229 MonitoredProcess]: Starting monitored process 275 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:05,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Waiting until timeout for monitored process [2022-03-03 19:21:05,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:05,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:05,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:06,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:06,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:06,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:06,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 155 [2022-03-03 19:21:06,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 131 [2022-03-03 19:21:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:07,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:08,253 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:08,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 154 [2022-03-03 19:21:08,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:08,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:08,670 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:08,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:08,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330109434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:08,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:08,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:08,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311517888] [2022-03-03 19:21:08,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:08,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:08,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:08,748 INFO L87 Difference]: Start difference. First operand 554 states and 1579 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:09,565 INFO L93 Difference]: Finished difference Result 669 states and 1927 transitions. [2022-03-03 19:21:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:21:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:09,567 INFO L225 Difference]: With dead ends: 669 [2022-03-03 19:21:09,567 INFO L226 Difference]: Without dead ends: 654 [2022-03-03 19:21:09,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:21:09,567 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:09,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 332 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 307 Invalid, 0 Unknown, 149 Unchecked, 0.2s Time] [2022-03-03 19:21:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-03-03 19:21:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 554. [2022-03-03 19:21:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 2.8553345388788425) internal successors, (1579), 553 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1579 transitions. [2022-03-03 19:21:09,573 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1579 transitions. Word has length 20 [2022-03-03 19:21:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:09,574 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1579 transitions. [2022-03-03 19:21:09,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1579 transitions. [2022-03-03 19:21:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:09,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:09,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:09,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:09,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464,275 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:09,779 INFO L402 AbstractCegarLoop]: === Iteration 466 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2118961091, now seen corresponding path program 75 times [2022-03-03 19:21:09,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:09,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791343534] [2022-03-03 19:21:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:10,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:10,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791343534] [2022-03-03 19:21:10,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791343534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:10,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215325055] [2022-03-03 19:21:10,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:21:10,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:10,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:10,173 INFO L229 MonitoredProcess]: Starting monitored process 276 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:10,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Waiting until timeout for monitored process [2022-03-03 19:21:10,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:21:10,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:10,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:21:10,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:10,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:10,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:21:11,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:11,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 146 [2022-03-03 19:21:11,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-03-03 19:21:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:11,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:12,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:12,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:21:12,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:12,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:12,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:12,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:12,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215325055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:12,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:12,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:12,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139964710] [2022-03-03 19:21:12,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:12,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:12,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:12,704 INFO L87 Difference]: Start difference. First operand 554 states and 1579 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:13,269 INFO L93 Difference]: Finished difference Result 666 states and 1917 transitions. [2022-03-03 19:21:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:13,270 INFO L225 Difference]: With dead ends: 666 [2022-03-03 19:21:13,270 INFO L226 Difference]: Without dead ends: 659 [2022-03-03 19:21:13,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:21:13,270 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:13,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 311 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 96 Unchecked, 0.1s Time] [2022-03-03 19:21:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-03-03 19:21:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 555. [2022-03-03 19:21:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 2.8537906137184117) internal successors, (1581), 554 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1581 transitions. [2022-03-03 19:21:13,276 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1581 transitions. Word has length 20 [2022-03-03 19:21:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:13,276 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1581 transitions. [2022-03-03 19:21:13,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1581 transitions. [2022-03-03 19:21:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:13,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:13,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:13,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Ended with exit code 0 [2022-03-03 19:21:13,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable465 [2022-03-03 19:21:13,479 INFO L402 AbstractCegarLoop]: === Iteration 467 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash 204137597, now seen corresponding path program 76 times [2022-03-03 19:21:13,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:13,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506446771] [2022-03-03 19:21:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:13,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:13,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:13,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506446771] [2022-03-03 19:21:13,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506446771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:13,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050714248] [2022-03-03 19:21:13,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:21:13,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:13,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:13,797 INFO L229 MonitoredProcess]: Starting monitored process 277 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:13,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Waiting until timeout for monitored process [2022-03-03 19:21:13,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:21:13,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:13,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:14,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:14,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:14,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:14,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 180 [2022-03-03 19:21:14,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 152 [2022-03-03 19:21:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:16,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:16,801 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:16,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 161 [2022-03-03 19:21:17,211 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:17,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:17,215 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:17,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:17,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050714248] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:17,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:17,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:17,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379245632] [2022-03-03 19:21:17,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:17,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:17,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:17,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:17,257 INFO L87 Difference]: Start difference. First operand 555 states and 1581 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:17,831 INFO L93 Difference]: Finished difference Result 697 states and 1997 transitions. [2022-03-03 19:21:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:21:17,832 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:17,833 INFO L225 Difference]: With dead ends: 697 [2022-03-03 19:21:17,833 INFO L226 Difference]: Without dead ends: 687 [2022-03-03 19:21:17,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:21:17,833 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 51 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:17,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 317 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 389 Invalid, 0 Unknown, 265 Unchecked, 0.1s Time] [2022-03-03 19:21:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-03 19:21:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 558. [2022-03-03 19:21:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 2.8563734290843805) internal successors, (1591), 557 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1591 transitions. [2022-03-03 19:21:17,841 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1591 transitions. Word has length 20 [2022-03-03 19:21:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:17,841 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1591 transitions. [2022-03-03 19:21:17,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1591 transitions. [2022-03-03 19:21:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:17,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:17,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:17,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:18,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 277 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable466 [2022-03-03 19:21:18,055 INFO L402 AbstractCegarLoop]: === Iteration 468 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1947284715, now seen corresponding path program 77 times [2022-03-03 19:21:18,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:18,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584235514] [2022-03-03 19:21:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:18,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:18,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584235514] [2022-03-03 19:21:18,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584235514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:18,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342487870] [2022-03-03 19:21:18,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:21:18,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:18,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:18,335 INFO L229 MonitoredProcess]: Starting monitored process 278 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:18,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Waiting until timeout for monitored process [2022-03-03 19:21:18,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:21:18,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:18,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:21:18,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:18,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:18,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-03-03 19:21:18,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-03-03 19:21:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:19,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:19,885 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:19,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 115 [2022-03-03 19:21:20,127 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:21:20,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 84 [2022-03-03 19:21:20,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2022-03-03 19:21:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:20,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342487870] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:20,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:20,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:21:20,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885396160] [2022-03-03 19:21:20,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:20,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:21:20,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:21:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:21:20,135 INFO L87 Difference]: Start difference. First operand 558 states and 1591 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:22,092 INFO L93 Difference]: Finished difference Result 797 states and 2177 transitions. [2022-03-03 19:21:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:21:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:22,093 INFO L225 Difference]: With dead ends: 797 [2022-03-03 19:21:22,093 INFO L226 Difference]: Without dead ends: 756 [2022-03-03 19:21:22,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=297, Invalid=1509, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:21:22,094 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 243 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:22,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 355 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1064 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-03-03 19:21:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-03-03 19:21:22,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 537. [2022-03-03 19:21:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 2.873134328358209) internal successors, (1540), 536 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1540 transitions. [2022-03-03 19:21:22,101 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1540 transitions. Word has length 20 [2022-03-03 19:21:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:22,101 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 1540 transitions. [2022-03-03 19:21:22,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1540 transitions. [2022-03-03 19:21:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:22,101 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:22,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:22,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Ended with exit code 0 [2022-03-03 19:21:22,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable467 [2022-03-03 19:21:22,304 INFO L402 AbstractCegarLoop]: === Iteration 469 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:22,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2037562035, now seen corresponding path program 78 times [2022-03-03 19:21:22,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:22,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720736076] [2022-03-03 19:21:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:22,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:22,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:22,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720736076] [2022-03-03 19:21:22,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720736076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:22,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539126084] [2022-03-03 19:21:22,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:21:22,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:22,821 INFO L229 MonitoredProcess]: Starting monitored process 279 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:22,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Waiting until timeout for monitored process [2022-03-03 19:21:22,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:21:22,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:22,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:23,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:23,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-03-03 19:21:24,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:24,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 155 [2022-03-03 19:21:24,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 131 [2022-03-03 19:21:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:25,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:26,346 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:26,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 258 [2022-03-03 19:21:27,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:27,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:27,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:27,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:27,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539126084] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:27,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:27,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:27,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316058911] [2022-03-03 19:21:27,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:27,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:27,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:27,279 INFO L87 Difference]: Start difference. First operand 537 states and 1540 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:27,535 INFO L93 Difference]: Finished difference Result 652 states and 1886 transitions. [2022-03-03 19:21:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:27,536 INFO L225 Difference]: With dead ends: 652 [2022-03-03 19:21:27,536 INFO L226 Difference]: Without dead ends: 645 [2022-03-03 19:21:27,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:21:27,537 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:27,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 281 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2022-03-03 19:21:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-03-03 19:21:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 538. [2022-03-03 19:21:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 2.8715083798882683) internal successors, (1542), 537 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1542 transitions. [2022-03-03 19:21:27,542 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1542 transitions. Word has length 20 [2022-03-03 19:21:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:27,542 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1542 transitions. [2022-03-03 19:21:27,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1542 transitions. [2022-03-03 19:21:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:27,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:27,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:27,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:27,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 279 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable468 [2022-03-03 19:21:27,759 INFO L402 AbstractCegarLoop]: === Iteration 470 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1885856431, now seen corresponding path program 79 times [2022-03-03 19:21:27,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:27,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638848617] [2022-03-03 19:21:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:28,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:28,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638848617] [2022-03-03 19:21:28,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638848617] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:28,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640023837] [2022-03-03 19:21:28,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:28,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:28,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:28,054 INFO L229 MonitoredProcess]: Starting monitored process 280 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:28,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Waiting until timeout for monitored process [2022-03-03 19:21:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:28,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:28,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:28,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:28,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:21:28,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:28,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 192 [2022-03-03 19:21:28,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 164 [2022-03-03 19:21:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:30,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:31,367 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:31,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 162 [2022-03-03 19:21:31,748 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:31,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:31,752 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:31,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:31,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640023837] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:31,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:31,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:31,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933730218] [2022-03-03 19:21:31,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:31,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:31,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:31,788 INFO L87 Difference]: Start difference. First operand 538 states and 1542 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:32,845 INFO L93 Difference]: Finished difference Result 636 states and 1829 transitions. [2022-03-03 19:21:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:32,846 INFO L225 Difference]: With dead ends: 636 [2022-03-03 19:21:32,846 INFO L226 Difference]: Without dead ends: 629 [2022-03-03 19:21:32,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:21:32,847 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:32,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 230 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 309 Invalid, 0 Unknown, 211 Unchecked, 0.1s Time] [2022-03-03 19:21:32,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-03-03 19:21:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 537. [2022-03-03 19:21:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 2.873134328358209) internal successors, (1540), 536 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1540 transitions. [2022-03-03 19:21:32,852 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1540 transitions. Word has length 20 [2022-03-03 19:21:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:32,852 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 1540 transitions. [2022-03-03 19:21:32,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1540 transitions. [2022-03-03 19:21:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:32,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:32,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:32,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Ended with exit code 0 [2022-03-03 19:21:33,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 280 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2022-03-03 19:21:33,062 INFO L402 AbstractCegarLoop]: === Iteration 471 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash 111127373, now seen corresponding path program 80 times [2022-03-03 19:21:33,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:33,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373211628] [2022-03-03 19:21:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:33,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:33,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:33,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373211628] [2022-03-03 19:21:33,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373211628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:33,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556500971] [2022-03-03 19:21:33,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:21:33,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:33,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:33,336 INFO L229 MonitoredProcess]: Starting monitored process 281 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:33,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Waiting until timeout for monitored process [2022-03-03 19:21:33,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:33,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:33,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:21:33,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:33,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:33,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:34,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:34,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-03-03 19:21:34,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-03-03 19:21:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:34,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:35,732 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:35,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 132 [2022-03-03 19:21:36,261 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:36,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:21:36,267 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:36,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:21:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:36,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556500971] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:36,350 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:36,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:36,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324974384] [2022-03-03 19:21:36,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:36,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:36,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:36,351 INFO L87 Difference]: Start difference. First operand 537 states and 1540 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:37,134 INFO L93 Difference]: Finished difference Result 663 states and 1905 transitions. [2022-03-03 19:21:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:37,135 INFO L225 Difference]: With dead ends: 663 [2022-03-03 19:21:37,135 INFO L226 Difference]: Without dead ends: 656 [2022-03-03 19:21:37,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:21:37,136 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:37,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 217 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2022-03-03 19:21:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-03-03 19:21:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 539. [2022-03-03 19:21:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 2.87360594795539) internal successors, (1546), 538 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1546 transitions. [2022-03-03 19:21:37,142 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1546 transitions. Word has length 20 [2022-03-03 19:21:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:37,142 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 1546 transitions. [2022-03-03 19:21:37,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1546 transitions. [2022-03-03 19:21:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:37,142 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:37,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:37,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:37,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470,281 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:37,359 INFO L402 AbstractCegarLoop]: === Iteration 472 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1830660371, now seen corresponding path program 81 times [2022-03-03 19:21:37,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:37,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549079086] [2022-03-03 19:21:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:37,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:37,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549079086] [2022-03-03 19:21:37,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549079086] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:37,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595362202] [2022-03-03 19:21:37,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:21:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:37,637 INFO L229 MonitoredProcess]: Starting monitored process 282 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:37,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Waiting until timeout for monitored process [2022-03-03 19:21:37,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:21:37,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:37,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:21:37,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:38,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:38,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:38,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:38,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 187 [2022-03-03 19:21:38,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 159 [2022-03-03 19:21:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:38,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:39,752 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:39,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 132 [2022-03-03 19:21:40,166 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:40,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:40,172 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:40,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:40,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595362202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:40,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:40,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:40,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128508468] [2022-03-03 19:21:40,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:40,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:40,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:40,239 INFO L87 Difference]: Start difference. First operand 539 states and 1546 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:41,582 INFO L93 Difference]: Finished difference Result 654 states and 1891 transitions. [2022-03-03 19:21:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:21:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:41,584 INFO L225 Difference]: With dead ends: 654 [2022-03-03 19:21:41,584 INFO L226 Difference]: Without dead ends: 639 [2022-03-03 19:21:41,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:21:41,584 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 68 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:41,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 339 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 436 Invalid, 0 Unknown, 253 Unchecked, 0.2s Time] [2022-03-03 19:21:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-03 19:21:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 547. [2022-03-03 19:21:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 2.8754578754578755) internal successors, (1570), 546 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1570 transitions. [2022-03-03 19:21:41,590 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1570 transitions. Word has length 20 [2022-03-03 19:21:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:41,590 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1570 transitions. [2022-03-03 19:21:41,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1570 transitions. [2022-03-03 19:21:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:41,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:41,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:41,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Ended with exit code 0 [2022-03-03 19:21:41,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471,282 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:41,803 INFO L402 AbstractCegarLoop]: === Iteration 473 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 136902857, now seen corresponding path program 82 times [2022-03-03 19:21:41,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:41,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403806473] [2022-03-03 19:21:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:42,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:42,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403806473] [2022-03-03 19:21:42,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403806473] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:42,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891119273] [2022-03-03 19:21:42,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:21:42,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:42,198 INFO L229 MonitoredProcess]: Starting monitored process 283 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:42,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Waiting until timeout for monitored process [2022-03-03 19:21:42,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:21:42,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:42,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:42,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:42,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:42,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:21:43,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:43,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 186 [2022-03-03 19:21:43,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 156 [2022-03-03 19:21:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:44,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:45,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:45,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 162 [2022-03-03 19:21:46,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:46,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:46,026 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:46,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:46,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891119273] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:46,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:46,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:46,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274025058] [2022-03-03 19:21:46,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:46,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:46,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:46,095 INFO L87 Difference]: Start difference. First operand 547 states and 1570 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:47,245 INFO L93 Difference]: Finished difference Result 659 states and 1892 transitions. [2022-03-03 19:21:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:21:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:47,246 INFO L225 Difference]: With dead ends: 659 [2022-03-03 19:21:47,246 INFO L226 Difference]: Without dead ends: 652 [2022-03-03 19:21:47,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:21:47,247 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:47,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 298 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 383 Invalid, 0 Unknown, 206 Unchecked, 0.2s Time] [2022-03-03 19:21:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-03-03 19:21:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 547. [2022-03-03 19:21:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 2.8754578754578755) internal successors, (1570), 546 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1570 transitions. [2022-03-03 19:21:47,253 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1570 transitions. Word has length 20 [2022-03-03 19:21:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:47,253 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1570 transitions. [2022-03-03 19:21:47,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1570 transitions. [2022-03-03 19:21:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:47,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:47,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:47,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:47,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable472 [2022-03-03 19:21:47,469 INFO L402 AbstractCegarLoop]: === Iteration 474 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash 139528633, now seen corresponding path program 83 times [2022-03-03 19:21:47,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:47,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623274616] [2022-03-03 19:21:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:47,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:47,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:47,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623274616] [2022-03-03 19:21:47,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623274616] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:47,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766158414] [2022-03-03 19:21:47,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:21:47,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:47,853 INFO L229 MonitoredProcess]: Starting monitored process 284 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:47,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Waiting until timeout for monitored process [2022-03-03 19:21:47,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:21:47,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:47,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:47,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:48,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-03-03 19:21:48,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 199 [2022-03-03 19:21:48,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 171 [2022-03-03 19:21:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:49,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:50,609 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:50,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 139 [2022-03-03 19:21:51,152 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:21:51,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:21:51,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:21:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:51,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766158414] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:51,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:51,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:21:51,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377265516] [2022-03-03 19:21:51,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:51,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:21:51,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:21:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:21:51,161 INFO L87 Difference]: Start difference. First operand 547 states and 1570 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:54,134 INFO L93 Difference]: Finished difference Result 745 states and 2078 transitions. [2022-03-03 19:21:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:21:54,134 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:54,135 INFO L225 Difference]: With dead ends: 745 [2022-03-03 19:21:54,135 INFO L226 Difference]: Without dead ends: 731 [2022-03-03 19:21:54,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=281, Invalid=1611, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:21:54,135 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 168 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:54,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 348 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 844 Invalid, 0 Unknown, 62 Unchecked, 0.5s Time] [2022-03-03 19:21:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-03-03 19:21:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 538. [2022-03-03 19:21:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 2.8845437616387337) internal successors, (1549), 537 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1549 transitions. [2022-03-03 19:21:54,142 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1549 transitions. Word has length 20 [2022-03-03 19:21:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:54,142 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1549 transitions. [2022-03-03 19:21:54,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1549 transitions. [2022-03-03 19:21:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:54,142 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:54,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:54,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:54,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473,284 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:54,359 INFO L402 AbstractCegarLoop]: === Iteration 475 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash 977448749, now seen corresponding path program 84 times [2022-03-03 19:21:54,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:54,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783927814] [2022-03-03 19:21:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:54,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:54,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783927814] [2022-03-03 19:21:54,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783927814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:54,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395511799] [2022-03-03 19:21:54,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:21:54,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:54,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:54,776 INFO L229 MonitoredProcess]: Starting monitored process 285 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:54,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Waiting until timeout for monitored process [2022-03-03 19:21:54,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:21:54,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:54,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:21:54,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:55,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:55,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:21:56,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:56,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 144 [2022-03-03 19:21:56,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 120 [2022-03-03 19:21:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:56,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:57,329 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:57,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 123 [2022-03-03 19:21:57,584 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:57,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:21:57,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:57,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:21:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:57,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395511799] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:57,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:57,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:57,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843526437] [2022-03-03 19:21:57,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:57,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:57,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:57,633 INFO L87 Difference]: Start difference. First operand 538 states and 1549 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:58,237 INFO L93 Difference]: Finished difference Result 675 states and 1931 transitions. [2022-03-03 19:21:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:58,238 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:21:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:58,239 INFO L225 Difference]: With dead ends: 675 [2022-03-03 19:21:58,239 INFO L226 Difference]: Without dead ends: 669 [2022-03-03 19:21:58,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:21:58,239 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:58,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 412 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 380 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2022-03-03 19:21:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-03 19:21:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 545. [2022-03-03 19:21:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 2.880514705882353) internal successors, (1567), 544 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1567 transitions. [2022-03-03 19:21:58,246 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1567 transitions. Word has length 20 [2022-03-03 19:21:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:58,246 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 1567 transitions. [2022-03-03 19:21:58,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1567 transitions. [2022-03-03 19:21:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:58,246 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:58,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:58,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Ended with exit code 0 [2022-03-03 19:21:58,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474,285 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:58,463 INFO L402 AbstractCegarLoop]: === Iteration 476 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash 788491629, now seen corresponding path program 85 times [2022-03-03 19:21:58,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:58,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42167158] [2022-03-03 19:21:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:59,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:59,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42167158] [2022-03-03 19:21:59,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42167158] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:59,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771513381] [2022-03-03 19:21:59,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:59,167 INFO L229 MonitoredProcess]: Starting monitored process 286 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:21:59,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Waiting until timeout for monitored process [2022-03-03 19:21:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:59,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:21:59,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:59,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:59,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:22:00,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:00,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 189 [2022-03-03 19:22:00,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 161 [2022-03-03 19:22:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:01,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:02,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:02,797 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-03-03 19:22:03,289 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:03,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:03,295 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:03,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:03,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771513381] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:03,364 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:03,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:03,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847821695] [2022-03-03 19:22:03,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:03,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:03,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:03,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:03,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:03,365 INFO L87 Difference]: Start difference. First operand 545 states and 1567 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:04,277 INFO L93 Difference]: Finished difference Result 668 states and 1922 transitions. [2022-03-03 19:22:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:22:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:04,278 INFO L225 Difference]: With dead ends: 668 [2022-03-03 19:22:04,278 INFO L226 Difference]: Without dead ends: 646 [2022-03-03 19:22:04,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:22:04,279 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 52 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:04,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 372 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 308 Invalid, 0 Unknown, 152 Unchecked, 0.2s Time] [2022-03-03 19:22:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-03-03 19:22:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 557. [2022-03-03 19:22:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 2.865107913669065) internal successors, (1593), 556 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1593 transitions. [2022-03-03 19:22:04,285 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1593 transitions. Word has length 20 [2022-03-03 19:22:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:04,285 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 1593 transitions. [2022-03-03 19:22:04,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1593 transitions. [2022-03-03 19:22:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:04,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:04,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:04,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:04,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable475 [2022-03-03 19:22:04,486 INFO L402 AbstractCegarLoop]: === Iteration 477 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash 159010147, now seen corresponding path program 86 times [2022-03-03 19:22:04,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:04,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246315823] [2022-03-03 19:22:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:04,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:04,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246315823] [2022-03-03 19:22:04,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246315823] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:04,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701756850] [2022-03-03 19:22:04,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:22:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:04,907 INFO L229 MonitoredProcess]: Starting monitored process 287 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:04,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Waiting until timeout for monitored process [2022-03-03 19:22:04,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:04,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:04,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:04,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:05,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:05,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:22:06,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:06,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 134 [2022-03-03 19:22:06,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-03-03 19:22:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:07,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:07,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:07,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2022-03-03 19:22:08,100 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:08,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:08,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:08,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:08,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701756850] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:08,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:08,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:08,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539183318] [2022-03-03 19:22:08,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:08,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:08,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:08,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:08,148 INFO L87 Difference]: Start difference. First operand 557 states and 1593 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:08,706 INFO L93 Difference]: Finished difference Result 651 states and 1881 transitions. [2022-03-03 19:22:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:22:08,706 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:08,708 INFO L225 Difference]: With dead ends: 651 [2022-03-03 19:22:08,708 INFO L226 Difference]: Without dead ends: 642 [2022-03-03 19:22:08,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:22:08,708 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:08,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 292 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 345 Invalid, 0 Unknown, 77 Unchecked, 0.1s Time] [2022-03-03 19:22:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-03-03 19:22:08,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 553. [2022-03-03 19:22:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 2.875) internal successors, (1587), 552 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1587 transitions. [2022-03-03 19:22:08,714 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1587 transitions. Word has length 20 [2022-03-03 19:22:08,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:08,714 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 1587 transitions. [2022-03-03 19:22:08,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1587 transitions. [2022-03-03 19:22:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:08,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:08,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:08,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:08,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 287 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable476 [2022-03-03 19:22:08,931 INFO L402 AbstractCegarLoop]: === Iteration 478 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2108693741, now seen corresponding path program 87 times [2022-03-03 19:22:08,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:08,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202305372] [2022-03-03 19:22:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:08,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:09,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:09,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202305372] [2022-03-03 19:22:09,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202305372] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:09,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729430603] [2022-03-03 19:22:09,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:22:09,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:09,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:09,250 INFO L229 MonitoredProcess]: Starting monitored process 288 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:09,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Waiting until timeout for monitored process [2022-03-03 19:22:09,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:22:09,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:09,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:09,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:09,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:09,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:22:10,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:10,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:22:10,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:22:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:11,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:12,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:12,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2022-03-03 19:22:12,391 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:12,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:12,397 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:12,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:12,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729430603] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:12,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:12,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:12,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785023127] [2022-03-03 19:22:12,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:12,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:12,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:12,468 INFO L87 Difference]: Start difference. First operand 553 states and 1587 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:13,378 INFO L93 Difference]: Finished difference Result 683 states and 1970 transitions. [2022-03-03 19:22:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:22:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:13,379 INFO L225 Difference]: With dead ends: 683 [2022-03-03 19:22:13,379 INFO L226 Difference]: Without dead ends: 668 [2022-03-03 19:22:13,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:22:13,380 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 76 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:13,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 344 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 509 Invalid, 0 Unknown, 204 Unchecked, 0.2s Time] [2022-03-03 19:22:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-03-03 19:22:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 567. [2022-03-03 19:22:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 2.8869257950530036) internal successors, (1634), 566 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1634 transitions. [2022-03-03 19:22:13,386 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1634 transitions. Word has length 20 [2022-03-03 19:22:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:13,386 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1634 transitions. [2022-03-03 19:22:13,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1634 transitions. [2022-03-03 19:22:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:13,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:13,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:13,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:13,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 288 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable477 [2022-03-03 19:22:13,603 INFO L402 AbstractCegarLoop]: === Iteration 479 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2131290289, now seen corresponding path program 88 times [2022-03-03 19:22:13,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:13,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941964619] [2022-03-03 19:22:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:14,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:14,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941964619] [2022-03-03 19:22:14,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941964619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:14,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001484172] [2022-03-03 19:22:14,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:22:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:14,069 INFO L229 MonitoredProcess]: Starting monitored process 289 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:14,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Waiting until timeout for monitored process [2022-03-03 19:22:14,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:22:14,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:14,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:14,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:14,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:14,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:22:15,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:15,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 178 [2022-03-03 19:22:15,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 148 [2022-03-03 19:22:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:15,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:16,088 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:16,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:22:16,501 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:16,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:22:16,507 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:16,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:22:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:16,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001484172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:16,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:16,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:16,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772364777] [2022-03-03 19:22:16,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:16,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:16,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:16,586 INFO L87 Difference]: Start difference. First operand 567 states and 1634 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:17,017 INFO L93 Difference]: Finished difference Result 659 states and 1919 transitions. [2022-03-03 19:22:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:22:17,018 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:17,019 INFO L225 Difference]: With dead ends: 659 [2022-03-03 19:22:17,019 INFO L226 Difference]: Without dead ends: 637 [2022-03-03 19:22:17,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:22:17,019 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:17,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 328 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 120 Unchecked, 0.1s Time] [2022-03-03 19:22:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-03-03 19:22:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 570. [2022-03-03 19:22:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.89103690685413) internal successors, (1645), 569 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1645 transitions. [2022-03-03 19:22:17,025 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1645 transitions. Word has length 20 [2022-03-03 19:22:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:17,025 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1645 transitions. [2022-03-03 19:22:17,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1645 transitions. [2022-03-03 19:22:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:17,026 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:17,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:17,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:17,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478,289 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:17,226 INFO L402 AbstractCegarLoop]: === Iteration 480 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1592222201, now seen corresponding path program 89 times [2022-03-03 19:22:17,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:17,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049864185] [2022-03-03 19:22:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:17,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:17,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049864185] [2022-03-03 19:22:17,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049864185] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:17,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417632424] [2022-03-03 19:22:17,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:22:17,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:17,749 INFO L229 MonitoredProcess]: Starting monitored process 290 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:17,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Waiting until timeout for monitored process [2022-03-03 19:22:17,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:17,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:17,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:17,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:22:18,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 136 [2022-03-03 19:22:18,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2022-03-03 19:22:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:18,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:19,335 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:19,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 122 [2022-03-03 19:22:19,756 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:22:19,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:22:19,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:22:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:19,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417632424] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:19,765 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:19,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:22:19,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142002532] [2022-03-03 19:22:19,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:19,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:22:19,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:22:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:22:19,765 INFO L87 Difference]: Start difference. First operand 570 states and 1645 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:23,322 INFO L93 Difference]: Finished difference Result 994 states and 2716 transitions. [2022-03-03 19:22:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:22:23,322 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:23,324 INFO L225 Difference]: With dead ends: 994 [2022-03-03 19:22:23,324 INFO L226 Difference]: Without dead ends: 951 [2022-03-03 19:22:23,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=263, Invalid=1717, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:22:23,324 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 213 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:23,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 438 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1027 Invalid, 0 Unknown, 56 Unchecked, 0.6s Time] [2022-03-03 19:22:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-03-03 19:22:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 597. [2022-03-03 19:22:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 2.902684563758389) internal successors, (1730), 596 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1730 transitions. [2022-03-03 19:22:23,332 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1730 transitions. Word has length 20 [2022-03-03 19:22:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:23,332 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 1730 transitions. [2022-03-03 19:22:23,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1730 transitions. [2022-03-03 19:22:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:23,333 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:23,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:23,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:23,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable479 [2022-03-03 19:22:23,549 INFO L402 AbstractCegarLoop]: === Iteration 481 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:23,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1243887571, now seen corresponding path program 90 times [2022-03-03 19:22:23,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:23,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392973212] [2022-03-03 19:22:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:23,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:24,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:24,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392973212] [2022-03-03 19:22:24,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392973212] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:24,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989980901] [2022-03-03 19:22:24,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:22:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:24,055 INFO L229 MonitoredProcess]: Starting monitored process 291 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:24,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Waiting until timeout for monitored process [2022-03-03 19:22:24,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:22:24,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:24,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:22:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:24,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:24,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:22:25,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:25,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 202 [2022-03-03 19:22:25,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 166 [2022-03-03 19:22:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:26,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:27,111 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:27,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 166 [2022-03-03 19:22:27,567 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:27,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:27,571 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:27,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:27,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989980901] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:27,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:27,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:27,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831251244] [2022-03-03 19:22:27,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:27,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:27,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:27,615 INFO L87 Difference]: Start difference. First operand 597 states and 1730 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:28,269 INFO L93 Difference]: Finished difference Result 678 states and 1962 transitions. [2022-03-03 19:22:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:22:28,269 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:28,270 INFO L225 Difference]: With dead ends: 678 [2022-03-03 19:22:28,270 INFO L226 Difference]: Without dead ends: 671 [2022-03-03 19:22:28,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:22:28,271 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 89 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:28,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 274 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 344 Unchecked, 0.1s Time] [2022-03-03 19:22:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-03-03 19:22:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 607. [2022-03-03 19:22:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 2.897689768976898) internal successors, (1756), 606 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1756 transitions. [2022-03-03 19:22:28,277 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1756 transitions. Word has length 20 [2022-03-03 19:22:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:28,277 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 1756 transitions. [2022-03-03 19:22:28,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1756 transitions. [2022-03-03 19:22:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:28,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:28,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:28,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:28,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480,291 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:28,500 INFO L402 AbstractCegarLoop]: === Iteration 482 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:28,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:28,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1056614569, now seen corresponding path program 91 times [2022-03-03 19:22:28,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:28,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065940855] [2022-03-03 19:22:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:28,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:28,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065940855] [2022-03-03 19:22:28,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065940855] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:28,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199206260] [2022-03-03 19:22:28,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:22:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:28,927 INFO L229 MonitoredProcess]: Starting monitored process 292 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:28,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Waiting until timeout for monitored process [2022-03-03 19:22:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:28,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:22:28,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:29,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:29,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:22:29,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:29,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 178 [2022-03-03 19:22:29,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 150 [2022-03-03 19:22:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:31,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:32,051 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:32,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 145 [2022-03-03 19:22:32,589 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:32,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:32,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:32,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:32,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199206260] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:32,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:32,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:32,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787119380] [2022-03-03 19:22:32,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:32,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:32,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:32,641 INFO L87 Difference]: Start difference. First operand 607 states and 1756 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:33,977 INFO L93 Difference]: Finished difference Result 736 states and 2094 transitions. [2022-03-03 19:22:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:22:33,977 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:33,978 INFO L225 Difference]: With dead ends: 736 [2022-03-03 19:22:33,978 INFO L226 Difference]: Without dead ends: 684 [2022-03-03 19:22:33,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:22:33,978 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 86 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:33,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 375 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 560 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-03-03 19:22:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-03-03 19:22:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 616. [2022-03-03 19:22:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 2.8894308943089433) internal successors, (1777), 615 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1777 transitions. [2022-03-03 19:22:33,986 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1777 transitions. Word has length 20 [2022-03-03 19:22:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:33,986 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1777 transitions. [2022-03-03 19:22:33,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1777 transitions. [2022-03-03 19:22:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:33,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:33,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:34,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Ended with exit code 0 [2022-03-03 19:22:34,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481,292 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:34,199 INFO L402 AbstractCegarLoop]: === Iteration 483 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:34,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:34,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1079211117, now seen corresponding path program 92 times [2022-03-03 19:22:34,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:34,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543151293] [2022-03-03 19:22:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:34,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:34,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:34,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543151293] [2022-03-03 19:22:34,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543151293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:34,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729925899] [2022-03-03 19:22:34,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:22:34,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:34,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:34,545 INFO L229 MonitoredProcess]: Starting monitored process 293 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:34,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Waiting until timeout for monitored process [2022-03-03 19:22:34,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:34,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:34,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:34,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:35,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:35,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:22:35,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:35,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 179 [2022-03-03 19:22:35,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 149 [2022-03-03 19:22:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:36,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:37,217 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:37,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2022-03-03 19:22:37,768 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:37,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:22:37,774 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:37,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:22:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:37,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729925899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:37,847 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:37,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:37,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746925001] [2022-03-03 19:22:37,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:37,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:37,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:37,847 INFO L87 Difference]: Start difference. First operand 616 states and 1777 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:38,321 INFO L93 Difference]: Finished difference Result 682 states and 1974 transitions. [2022-03-03 19:22:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:22:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:38,322 INFO L225 Difference]: With dead ends: 682 [2022-03-03 19:22:38,322 INFO L226 Difference]: Without dead ends: 657 [2022-03-03 19:22:38,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:22:38,323 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:38,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 225 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 302 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2022-03-03 19:22:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-03-03 19:22:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 613. [2022-03-03 19:22:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 2.8905228758169934) internal successors, (1769), 612 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1769 transitions. [2022-03-03 19:22:38,329 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1769 transitions. Word has length 20 [2022-03-03 19:22:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:38,329 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 1769 transitions. [2022-03-03 19:22:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1769 transitions. [2022-03-03 19:22:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:38,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:38,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:38,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:38,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482,293 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:38,538 INFO L402 AbstractCegarLoop]: === Iteration 484 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1092181967, now seen corresponding path program 93 times [2022-03-03 19:22:38,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:38,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271712299] [2022-03-03 19:22:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:38,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:38,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:38,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271712299] [2022-03-03 19:22:38,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271712299] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:38,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257916212] [2022-03-03 19:22:38,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:22:38,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:38,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:38,945 INFO L229 MonitoredProcess]: Starting monitored process 294 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:38,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Waiting until timeout for monitored process [2022-03-03 19:22:38,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:22:38,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:38,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:22:38,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:39,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-03-03 19:22:39,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 196 [2022-03-03 19:22:39,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 166 [2022-03-03 19:22:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:40,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:41,587 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:41,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 211 [2022-03-03 19:22:43,125 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:43,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:22:43,131 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:43,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:22:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:43,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257916212] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:43,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:43,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:43,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485797178] [2022-03-03 19:22:43,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:43,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:43,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:43,205 INFO L87 Difference]: Start difference. First operand 613 states and 1769 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:45,544 INFO L93 Difference]: Finished difference Result 897 states and 2490 transitions. [2022-03-03 19:22:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:22:45,544 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:45,545 INFO L225 Difference]: With dead ends: 897 [2022-03-03 19:22:45,545 INFO L226 Difference]: Without dead ends: 867 [2022-03-03 19:22:45,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:22:45,546 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 191 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:45,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 309 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:22:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-03-03 19:22:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 622. [2022-03-03 19:22:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 2.896940418679549) internal successors, (1799), 621 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1799 transitions. [2022-03-03 19:22:45,553 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1799 transitions. Word has length 20 [2022-03-03 19:22:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:45,553 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 1799 transitions. [2022-03-03 19:22:45,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1799 transitions. [2022-03-03 19:22:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:45,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:45,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:45,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Ended with exit code 0 [2022-03-03 19:22:45,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483,294 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:45,754 INFO L402 AbstractCegarLoop]: === Iteration 485 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1069585419, now seen corresponding path program 94 times [2022-03-03 19:22:45,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:45,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846732921] [2022-03-03 19:22:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:46,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:46,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846732921] [2022-03-03 19:22:46,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846732921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:46,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050533184] [2022-03-03 19:22:46,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:22:46,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:46,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:46,173 INFO L229 MonitoredProcess]: Starting monitored process 295 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:46,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Waiting until timeout for monitored process [2022-03-03 19:22:46,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:22:46,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:46,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:46,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:46,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:46,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:22:47,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:47,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:22:47,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:22:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:48,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:48,477 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:48,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 136 [2022-03-03 19:22:48,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:48,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:48,748 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:48,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:48,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050533184] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:48,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:48,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:48,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88096150] [2022-03-03 19:22:48,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:48,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:48,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:48,789 INFO L87 Difference]: Start difference. First operand 622 states and 1799 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:49,174 INFO L93 Difference]: Finished difference Result 705 states and 2043 transitions. [2022-03-03 19:22:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:22:49,174 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:49,176 INFO L225 Difference]: With dead ends: 705 [2022-03-03 19:22:49,176 INFO L226 Difference]: Without dead ends: 683 [2022-03-03 19:22:49,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:22:49,176 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 82 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:49,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 289 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 389 Invalid, 0 Unknown, 195 Unchecked, 0.1s Time] [2022-03-03 19:22:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-03 19:22:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 631. [2022-03-03 19:22:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.8984126984126983) internal successors, (1826), 630 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1826 transitions. [2022-03-03 19:22:49,182 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1826 transitions. Word has length 20 [2022-03-03 19:22:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:49,182 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 1826 transitions. [2022-03-03 19:22:49,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1826 transitions. [2022-03-03 19:22:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:49,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:49,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:49,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:49,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484,295 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:49,402 INFO L402 AbstractCegarLoop]: === Iteration 486 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash -498130613, now seen corresponding path program 95 times [2022-03-03 19:22:49,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:49,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495935945] [2022-03-03 19:22:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:49,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:49,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495935945] [2022-03-03 19:22:49,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495935945] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:49,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099865477] [2022-03-03 19:22:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:22:49,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:49,806 INFO L229 MonitoredProcess]: Starting monitored process 296 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:49,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Waiting until timeout for monitored process [2022-03-03 19:22:49,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:49,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:49,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:49,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:50,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:22:50,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 157 [2022-03-03 19:22:50,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 133 [2022-03-03 19:22:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:50,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:51,513 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:51,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-03-03 19:22:51,907 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:22:51,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:22:51,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:22:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:51,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099865477] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:51,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:51,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:22:51,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871660122] [2022-03-03 19:22:51,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:51,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:22:51,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:22:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:22:51,926 INFO L87 Difference]: Start difference. First operand 631 states and 1826 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:53,886 INFO L93 Difference]: Finished difference Result 854 states and 2402 transitions. [2022-03-03 19:22:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:22:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:53,888 INFO L225 Difference]: With dead ends: 854 [2022-03-03 19:22:53,888 INFO L226 Difference]: Without dead ends: 810 [2022-03-03 19:22:53,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:22:53,888 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 182 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:53,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 359 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1033 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-03-03 19:22:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-03-03 19:22:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 626. [2022-03-03 19:22:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 2.888) internal successors, (1805), 625 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1805 transitions. [2022-03-03 19:22:53,897 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1805 transitions. Word has length 20 [2022-03-03 19:22:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:53,897 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 1805 transitions. [2022-03-03 19:22:53,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:53,897 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1805 transitions. [2022-03-03 19:22:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:53,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:53,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:53,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:54,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable485 [2022-03-03 19:22:54,111 INFO L402 AbstractCegarLoop]: === Iteration 487 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash -660123707, now seen corresponding path program 96 times [2022-03-03 19:22:54,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:54,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923739204] [2022-03-03 19:22:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:54,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:54,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:54,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923739204] [2022-03-03 19:22:54,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923739204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:54,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594216110] [2022-03-03 19:22:54,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:22:54,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:54,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:54,544 INFO L229 MonitoredProcess]: Starting monitored process 297 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:54,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Waiting until timeout for monitored process [2022-03-03 19:22:54,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:22:54,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:54,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:54,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:54,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:54,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:22:56,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:56,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 149 [2022-03-03 19:22:56,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 125 [2022-03-03 19:22:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:56,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:57,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:57,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2022-03-03 19:22:57,861 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:57,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:22:57,867 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:57,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:22:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:57,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594216110] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:57,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:57,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:57,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369658849] [2022-03-03 19:22:57,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:57,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:57,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:57,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:57,930 INFO L87 Difference]: Start difference. First operand 626 states and 1805 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:58,732 INFO L93 Difference]: Finished difference Result 774 states and 2205 transitions. [2022-03-03 19:22:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:22:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:22:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:58,734 INFO L225 Difference]: With dead ends: 774 [2022-03-03 19:22:58,734 INFO L226 Difference]: Without dead ends: 768 [2022-03-03 19:22:58,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:22:58,734 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 99 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:58,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 347 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 458 Unchecked, 0.2s Time] [2022-03-03 19:22:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-03-03 19:22:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 639. [2022-03-03 19:22:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 2.8793103448275863) internal successors, (1837), 638 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1837 transitions. [2022-03-03 19:22:58,741 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1837 transitions. Word has length 20 [2022-03-03 19:22:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:58,741 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 1837 transitions. [2022-03-03 19:22:58,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1837 transitions. [2022-03-03 19:22:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:58,742 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:58,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:58,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:58,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2022-03-03 19:22:58,943 INFO L402 AbstractCegarLoop]: === Iteration 488 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:58,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -849080827, now seen corresponding path program 97 times [2022-03-03 19:22:58,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:58,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694765485] [2022-03-03 19:22:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:59,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:59,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694765485] [2022-03-03 19:22:59,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694765485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:59,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523027557] [2022-03-03 19:22:59,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:22:59,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:59,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:59,700 INFO L229 MonitoredProcess]: Starting monitored process 298 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:22:59,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Waiting until timeout for monitored process [2022-03-03 19:22:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:59,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:22:59,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:00,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:00,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:23:01,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:01,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2022-03-03 19:23:01,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 104 [2022-03-03 19:23:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:01,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:02,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:02,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 123 [2022-03-03 19:23:02,517 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:02,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:23:02,523 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:02,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:23:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:02,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523027557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:02,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:02,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:02,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405058653] [2022-03-03 19:23:02,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:02,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:02,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:02,587 INFO L87 Difference]: Start difference. First operand 639 states and 1837 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:03,160 INFO L93 Difference]: Finished difference Result 794 states and 2268 transitions. [2022-03-03 19:23:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:23:03,160 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:03,161 INFO L225 Difference]: With dead ends: 794 [2022-03-03 19:23:03,161 INFO L226 Difference]: Without dead ends: 772 [2022-03-03 19:23:03,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:23:03,162 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:03,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 368 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 358 Invalid, 0 Unknown, 144 Unchecked, 0.2s Time] [2022-03-03 19:23:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-03-03 19:23:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 644. [2022-03-03 19:23:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 2.8693623639191292) internal successors, (1845), 643 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1845 transitions. [2022-03-03 19:23:03,171 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1845 transitions. Word has length 20 [2022-03-03 19:23:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:03,171 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 1845 transitions. [2022-03-03 19:23:03,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1845 transitions. [2022-03-03 19:23:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:03,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:03,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:03,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:03,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487,298 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:03,388 INFO L402 AbstractCegarLoop]: === Iteration 489 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:03,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1478562309, now seen corresponding path program 98 times [2022-03-03 19:23:03,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:03,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146348904] [2022-03-03 19:23:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:03,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:03,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146348904] [2022-03-03 19:23:03,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146348904] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:03,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008043187] [2022-03-03 19:23:03,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:23:03,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:03,705 INFO L229 MonitoredProcess]: Starting monitored process 299 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:03,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Waiting until timeout for monitored process [2022-03-03 19:23:03,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:03,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:03,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:03,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:04,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:04,201 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:23:05,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:05,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 141 [2022-03-03 19:23:05,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 117 [2022-03-03 19:23:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:05,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:06,760 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:06,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 122 [2022-03-03 19:23:07,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:07,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:23:07,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:07,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:23:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:07,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008043187] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:07,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:07,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:07,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628457876] [2022-03-03 19:23:07,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:07,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:07,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:07,247 INFO L87 Difference]: Start difference. First operand 644 states and 1845 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:08,273 INFO L93 Difference]: Finished difference Result 858 states and 2468 transitions. [2022-03-03 19:23:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:23:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:08,274 INFO L225 Difference]: With dead ends: 858 [2022-03-03 19:23:08,274 INFO L226 Difference]: Without dead ends: 822 [2022-03-03 19:23:08,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:23:08,275 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 82 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:08,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 450 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 523 Invalid, 0 Unknown, 233 Unchecked, 0.3s Time] [2022-03-03 19:23:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-03 19:23:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 650. [2022-03-03 19:23:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 2.873651771956857) internal successors, (1865), 649 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1865 transitions. [2022-03-03 19:23:08,283 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1865 transitions. Word has length 20 [2022-03-03 19:23:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:08,283 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 1865 transitions. [2022-03-03 19:23:08,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1865 transitions. [2022-03-03 19:23:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:08,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:08,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:08,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:08,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 299 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable488 [2022-03-03 19:23:08,499 INFO L402 AbstractCegarLoop]: === Iteration 490 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:08,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash 471121285, now seen corresponding path program 99 times [2022-03-03 19:23:08,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:08,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502160634] [2022-03-03 19:23:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:08,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:08,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502160634] [2022-03-03 19:23:08,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502160634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:08,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567980958] [2022-03-03 19:23:08,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:23:08,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:08,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:08,819 INFO L229 MonitoredProcess]: Starting monitored process 300 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:08,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Waiting until timeout for monitored process [2022-03-03 19:23:08,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:23:08,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:08,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:08,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:09,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:09,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:23:09,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:09,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:23:09,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:23:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:10,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:11,482 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:11,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2022-03-03 19:23:11,890 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:11,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:23:11,895 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:11,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:23:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:11,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567980958] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:11,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:11,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:11,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079169554] [2022-03-03 19:23:11,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:11,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:11,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:11,959 INFO L87 Difference]: Start difference. First operand 650 states and 1865 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:13,273 INFO L93 Difference]: Finished difference Result 767 states and 2199 transitions. [2022-03-03 19:23:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:23:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:13,274 INFO L225 Difference]: With dead ends: 767 [2022-03-03 19:23:13,274 INFO L226 Difference]: Without dead ends: 752 [2022-03-03 19:23:13,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:23:13,274 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 94 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:13,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 291 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 459 Invalid, 0 Unknown, 143 Unchecked, 0.2s Time] [2022-03-03 19:23:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-03-03 19:23:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 655. [2022-03-03 19:23:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 654 states have (on average 2.879204892966361) internal successors, (1883), 654 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1883 transitions. [2022-03-03 19:23:13,281 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1883 transitions. Word has length 20 [2022-03-03 19:23:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:13,281 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 1883 transitions. [2022-03-03 19:23:13,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1883 transitions. [2022-03-03 19:23:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:13,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:13,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:13,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Ended with exit code 0 [2022-03-03 19:23:13,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489,300 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:13,493 INFO L402 AbstractCegarLoop]: === Iteration 491 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:13,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash 493717833, now seen corresponding path program 100 times [2022-03-03 19:23:13,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:13,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941466083] [2022-03-03 19:23:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:13,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:13,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:13,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941466083] [2022-03-03 19:23:13,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941466083] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:13,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530082981] [2022-03-03 19:23:13,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:23:13,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:13,894 INFO L229 MonitoredProcess]: Starting monitored process 301 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:13,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Waiting until timeout for monitored process [2022-03-03 19:23:13,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:23:13,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:13,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:23:13,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:14,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:14,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:23:15,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:15,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 189 [2022-03-03 19:23:15,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 159 [2022-03-03 19:23:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:16,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:17,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:17,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 145 [2022-03-03 19:23:17,489 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:17,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:23:17,494 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:17,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:23:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:17,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530082981] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:17,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:17,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:17,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684912972] [2022-03-03 19:23:17,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:17,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:17,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:17,558 INFO L87 Difference]: Start difference. First operand 655 states and 1883 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:17,995 INFO L93 Difference]: Finished difference Result 791 states and 2270 transitions. [2022-03-03 19:23:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:23:17,995 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:17,996 INFO L225 Difference]: With dead ends: 791 [2022-03-03 19:23:17,996 INFO L226 Difference]: Without dead ends: 781 [2022-03-03 19:23:17,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:23:17,996 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:17,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 280 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 263 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2022-03-03 19:23:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-03-03 19:23:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 660. [2022-03-03 19:23:18,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 2.881638846737481) internal successors, (1899), 659 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1899 transitions. [2022-03-03 19:23:18,003 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1899 transitions. Word has length 20 [2022-03-03 19:23:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:18,003 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1899 transitions. [2022-03-03 19:23:18,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1899 transitions. [2022-03-03 19:23:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:18,004 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:18,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:18,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:18,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490,301 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:18,220 INFO L402 AbstractCegarLoop]: === Iteration 492 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1518225205, now seen corresponding path program 101 times [2022-03-03 19:23:18,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:18,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734908244] [2022-03-03 19:23:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:18,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:18,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734908244] [2022-03-03 19:23:18,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734908244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:18,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141904182] [2022-03-03 19:23:18,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:23:18,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:18,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:18,890 INFO L229 MonitoredProcess]: Starting monitored process 302 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:18,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Waiting until timeout for monitored process [2022-03-03 19:23:18,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:18,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:18,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:19,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:23:19,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 137 [2022-03-03 19:23:19,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 113 [2022-03-03 19:23:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:19,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:20,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:20,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 123 [2022-03-03 19:23:20,817 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:23:20,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:23:20,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:23:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:20,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141904182] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:20,825 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:20,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:23:20,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155614805] [2022-03-03 19:23:20,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:20,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:23:20,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:23:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:23:20,826 INFO L87 Difference]: Start difference. First operand 660 states and 1899 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:24,776 INFO L93 Difference]: Finished difference Result 1208 states and 3296 transitions. [2022-03-03 19:23:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 19:23:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:24,777 INFO L225 Difference]: With dead ends: 1208 [2022-03-03 19:23:24,778 INFO L226 Difference]: Without dead ends: 1020 [2022-03-03 19:23:24,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=362, Invalid=1894, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:23:24,778 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 393 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:24,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 375 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1054 Invalid, 0 Unknown, 21 Unchecked, 0.6s Time] [2022-03-03 19:23:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-03-03 19:23:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 672. [2022-03-03 19:23:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 2.827123695976155) internal successors, (1897), 671 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1897 transitions. [2022-03-03 19:23:24,787 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1897 transitions. Word has length 20 [2022-03-03 19:23:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:24,787 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 1897 transitions. [2022-03-03 19:23:24,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1897 transitions. [2022-03-03 19:23:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:24,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:24,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:24,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Ended with exit code 0 [2022-03-03 19:23:25,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 302 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable491 [2022-03-03 19:23:25,003 INFO L402 AbstractCegarLoop]: === Iteration 493 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:25,003 INFO L85 PathProgramCache]: Analyzing trace with hash -704369359, now seen corresponding path program 102 times [2022-03-03 19:23:25,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:25,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921891187] [2022-03-03 19:23:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:25,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:25,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:25,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921891187] [2022-03-03 19:23:25,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921891187] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:25,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219311025] [2022-03-03 19:23:25,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:23:25,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:25,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:25,326 INFO L229 MonitoredProcess]: Starting monitored process 303 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:25,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Waiting until timeout for monitored process [2022-03-03 19:23:25,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:23:25,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:25,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:25,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:25,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:25,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:23:26,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:26,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 179 [2022-03-03 19:23:26,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 149 [2022-03-03 19:23:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:27,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:28,039 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:28,039 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 125 [2022-03-03 19:23:28,500 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:28,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:23:28,506 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:28,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:23:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:28,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219311025] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:28,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:28,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:28,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857010674] [2022-03-03 19:23:28,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:28,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:28,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:28,580 INFO L87 Difference]: Start difference. First operand 672 states and 1897 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:29,420 INFO L93 Difference]: Finished difference Result 755 states and 2141 transitions. [2022-03-03 19:23:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:23:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:29,421 INFO L225 Difference]: With dead ends: 755 [2022-03-03 19:23:29,422 INFO L226 Difference]: Without dead ends: 738 [2022-03-03 19:23:29,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:23:29,422 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:29,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 354 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 386 Invalid, 0 Unknown, 263 Unchecked, 0.2s Time] [2022-03-03 19:23:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-03-03 19:23:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 682. [2022-03-03 19:23:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 2.816446402349486) internal successors, (1918), 681 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1918 transitions. [2022-03-03 19:23:29,429 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1918 transitions. Word has length 20 [2022-03-03 19:23:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:29,429 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 1918 transitions. [2022-03-03 19:23:29,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1918 transitions. [2022-03-03 19:23:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:29,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:29,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:29,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:29,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492,303 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:29,646 INFO L402 AbstractCegarLoop]: === Iteration 494 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:29,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash -681772811, now seen corresponding path program 103 times [2022-03-03 19:23:29,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:29,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912578124] [2022-03-03 19:23:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:30,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:30,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912578124] [2022-03-03 19:23:30,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912578124] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:30,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465365049] [2022-03-03 19:23:30,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:23:30,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:30,027 INFO L229 MonitoredProcess]: Starting monitored process 304 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:30,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Waiting until timeout for monitored process [2022-03-03 19:23:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:30,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:23:30,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:30,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:30,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:23:31,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:31,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 174 [2022-03-03 19:23:31,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 146 [2022-03-03 19:23:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:32,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:33,516 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:33,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 145 [2022-03-03 19:23:34,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:34,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 103 [2022-03-03 19:23:34,064 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:34,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 87 [2022-03-03 19:23:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:34,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465365049] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:34,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:34,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:34,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165594851] [2022-03-03 19:23:34,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:34,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:34,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:34,134 INFO L87 Difference]: Start difference. First operand 682 states and 1918 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:34,600 INFO L93 Difference]: Finished difference Result 796 states and 2222 transitions. [2022-03-03 19:23:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:23:34,600 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:34,601 INFO L225 Difference]: With dead ends: 796 [2022-03-03 19:23:34,601 INFO L226 Difference]: Without dead ends: 761 [2022-03-03 19:23:34,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:23:34,601 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 49 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:34,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 334 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 403 Unchecked, 0.2s Time] [2022-03-03 19:23:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-03-03 19:23:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 678. [2022-03-03 19:23:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 2.810930576070901) internal successors, (1903), 677 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1903 transitions. [2022-03-03 19:23:34,608 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1903 transitions. Word has length 20 [2022-03-03 19:23:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:34,608 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1903 transitions. [2022-03-03 19:23:34,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1903 transitions. [2022-03-03 19:23:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:34,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:34,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:34,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Ended with exit code 0 [2022-03-03 19:23:34,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493,304 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:34,813 INFO L402 AbstractCegarLoop]: === Iteration 495 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash 90169069, now seen corresponding path program 104 times [2022-03-03 19:23:34,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:34,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425418119] [2022-03-03 19:23:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:34,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:35,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:35,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425418119] [2022-03-03 19:23:35,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425418119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:35,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741367640] [2022-03-03 19:23:35,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:23:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:35,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:35,227 INFO L229 MonitoredProcess]: Starting monitored process 305 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:35,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Waiting until timeout for monitored process [2022-03-03 19:23:35,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:35,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:35,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:35,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:35,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:35,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:23:36,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:36,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 145 [2022-03-03 19:23:36,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-03-03 19:23:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:36,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:37,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:37,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2022-03-03 19:23:38,108 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:38,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:23:38,114 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:38,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:23:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:38,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741367640] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:38,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:38,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:38,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381995984] [2022-03-03 19:23:38,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:38,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:38,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:38,208 INFO L87 Difference]: Start difference. First operand 678 states and 1903 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:39,408 INFO L93 Difference]: Finished difference Result 801 states and 2249 transitions. [2022-03-03 19:23:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:23:39,408 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:39,410 INFO L225 Difference]: With dead ends: 801 [2022-03-03 19:23:39,410 INFO L226 Difference]: Without dead ends: 740 [2022-03-03 19:23:39,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:23:39,410 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 99 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:39,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 486 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 423 Invalid, 0 Unknown, 368 Unchecked, 0.2s Time] [2022-03-03 19:23:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-03-03 19:23:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 669. [2022-03-03 19:23:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 2.812874251497006) internal successors, (1879), 668 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1879 transitions. [2022-03-03 19:23:39,417 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1879 transitions. Word has length 20 [2022-03-03 19:23:39,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:39,417 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 1879 transitions. [2022-03-03 19:23:39,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1879 transitions. [2022-03-03 19:23:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:39,418 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:39,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:39,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:39,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable494 [2022-03-03 19:23:39,631 INFO L402 AbstractCegarLoop]: === Iteration 496 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1105256083, now seen corresponding path program 105 times [2022-03-03 19:23:39,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:39,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257372077] [2022-03-03 19:23:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:40,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:40,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257372077] [2022-03-03 19:23:40,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257372077] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:40,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951469773] [2022-03-03 19:23:40,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:23:40,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:40,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:40,043 INFO L229 MonitoredProcess]: Starting monitored process 306 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:40,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Waiting until timeout for monitored process [2022-03-03 19:23:40,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:23:40,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:40,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:23:40,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:40,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:40,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:23:41,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:41,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 188 [2022-03-03 19:23:41,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 160 [2022-03-03 19:23:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:42,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:43,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:43,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 145 [2022-03-03 19:23:44,064 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:44,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:23:44,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:44,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:23:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:44,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951469773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:44,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:44,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:44,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088266174] [2022-03-03 19:23:44,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:44,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:44,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:44,142 INFO L87 Difference]: Start difference. First operand 669 states and 1879 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:45,206 INFO L93 Difference]: Finished difference Result 730 states and 2056 transitions. [2022-03-03 19:23:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:23:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:45,208 INFO L225 Difference]: With dead ends: 730 [2022-03-03 19:23:45,208 INFO L226 Difference]: Without dead ends: 721 [2022-03-03 19:23:45,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:23:45,208 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:45,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 286 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 362 Invalid, 0 Unknown, 79 Unchecked, 0.2s Time] [2022-03-03 19:23:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-03-03 19:23:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 670. [2022-03-03 19:23:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 2.8101644245142) internal successors, (1880), 669 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1880 transitions. [2022-03-03 19:23:45,215 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1880 transitions. Word has length 20 [2022-03-03 19:23:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:45,215 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1880 transitions. [2022-03-03 19:23:45,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1880 transitions. [2022-03-03 19:23:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:45,216 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:45,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:45,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Ended with exit code 0 [2022-03-03 19:23:45,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495,306 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:45,429 INFO L402 AbstractCegarLoop]: === Iteration 497 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1082659535, now seen corresponding path program 106 times [2022-03-03 19:23:45,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:45,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182182270] [2022-03-03 19:23:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:45,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:45,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182182270] [2022-03-03 19:23:45,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182182270] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:45,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292553808] [2022-03-03 19:23:45,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:23:45,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:45,711 INFO L229 MonitoredProcess]: Starting monitored process 307 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:45,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Waiting until timeout for monitored process [2022-03-03 19:23:45,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:23:45,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:45,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:23:45,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:46,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:46,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-03-03 19:23:47,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:47,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 183 [2022-03-03 19:23:47,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-03-03 19:23:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:48,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:49,476 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:49,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 156 [2022-03-03 19:23:50,170 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:50,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:23:50,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:50,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:23:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:50,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292553808] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:50,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:50,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:50,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304251186] [2022-03-03 19:23:50,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:50,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:50,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:50,229 INFO L87 Difference]: Start difference. First operand 670 states and 1880 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:51,079 INFO L93 Difference]: Finished difference Result 769 states and 2138 transitions. [2022-03-03 19:23:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:23:51,079 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:51,080 INFO L225 Difference]: With dead ends: 769 [2022-03-03 19:23:51,080 INFO L226 Difference]: Without dead ends: 743 [2022-03-03 19:23:51,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:23:51,081 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:51,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 300 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 142 Unchecked, 0.2s Time] [2022-03-03 19:23:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-03 19:23:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 675. [2022-03-03 19:23:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.807121661721068) internal successors, (1892), 674 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1892 transitions. [2022-03-03 19:23:51,087 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1892 transitions. Word has length 20 [2022-03-03 19:23:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:51,087 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1892 transitions. [2022-03-03 19:23:51,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1892 transitions. [2022-03-03 19:23:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:51,088 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:51,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:51,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:51,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable496 [2022-03-03 19:23:51,289 INFO L402 AbstractCegarLoop]: === Iteration 498 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:51,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1023857027, now seen corresponding path program 107 times [2022-03-03 19:23:51,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:51,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219208322] [2022-03-03 19:23:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:51,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:51,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:51,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219208322] [2022-03-03 19:23:51,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219208322] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:51,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610817116] [2022-03-03 19:23:51,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:23:51,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:51,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:51,857 INFO L229 MonitoredProcess]: Starting monitored process 308 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:51,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Waiting until timeout for monitored process [2022-03-03 19:23:51,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:51,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:51,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:51,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:52,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:23:52,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-03-03 19:23:52,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-03-03 19:23:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:53,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:53,951 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:53,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 114 [2022-03-03 19:23:54,262 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:23:54,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 85 [2022-03-03 19:23:54,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2022-03-03 19:23:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:54,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610817116] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:54,268 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:54,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:23:54,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515227483] [2022-03-03 19:23:54,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:54,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:23:54,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:23:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:23:54,268 INFO L87 Difference]: Start difference. First operand 675 states and 1892 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:56,850 INFO L93 Difference]: Finished difference Result 960 states and 2568 transitions. [2022-03-03 19:23:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:23:56,850 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:23:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:56,852 INFO L225 Difference]: With dead ends: 960 [2022-03-03 19:23:56,852 INFO L226 Difference]: Without dead ends: 919 [2022-03-03 19:23:56,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=273, Invalid=1707, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:23:56,852 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 204 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:56,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 381 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 936 Invalid, 0 Unknown, 43 Unchecked, 0.4s Time] [2022-03-03 19:23:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-03 19:23:56,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 675. [2022-03-03 19:23:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.820474777448071) internal successors, (1901), 674 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1901 transitions. [2022-03-03 19:23:56,860 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1901 transitions. Word has length 20 [2022-03-03 19:23:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:56,861 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1901 transitions. [2022-03-03 19:23:56,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1901 transitions. [2022-03-03 19:23:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:56,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:56,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:56,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:57,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable497 [2022-03-03 19:23:57,077 INFO L402 AbstractCegarLoop]: === Iteration 499 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1001260479, now seen corresponding path program 108 times [2022-03-03 19:23:57,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:57,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050918225] [2022-03-03 19:23:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:57,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:57,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050918225] [2022-03-03 19:23:57,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050918225] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:57,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261783802] [2022-03-03 19:23:57,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:23:57,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:57,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:57,343 INFO L229 MonitoredProcess]: Starting monitored process 309 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:23:57,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Waiting until timeout for monitored process [2022-03-03 19:23:57,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:23:57,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:57,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:23:57,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:57,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:57,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-03-03 19:23:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:58,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 191 [2022-03-03 19:23:58,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 163 [2022-03-03 19:23:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:58,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:59,287 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:59,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 127 [2022-03-03 19:23:59,620 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:59,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:23:59,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:59,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:23:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:59,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261783802] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:59,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:59,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:59,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916008497] [2022-03-03 19:23:59,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:59,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:59,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:59,669 INFO L87 Difference]: Start difference. First operand 675 states and 1901 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:00,170 INFO L93 Difference]: Finished difference Result 731 states and 2074 transitions. [2022-03-03 19:24:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:00,171 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:00,172 INFO L225 Difference]: With dead ends: 731 [2022-03-03 19:24:00,172 INFO L226 Difference]: Without dead ends: 719 [2022-03-03 19:24:00,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:24:00,172 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:00,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 177 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 301 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-03-03 19:24:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-03 19:24:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 675. [2022-03-03 19:24:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.820474777448071) internal successors, (1901), 674 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1901 transitions. [2022-03-03 19:24:00,178 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1901 transitions. Word has length 20 [2022-03-03 19:24:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1901 transitions. [2022-03-03 19:24:00,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1901 transitions. [2022-03-03 19:24:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:00,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:00,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:00,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Ended with exit code 0 [2022-03-03 19:24:00,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498,309 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:00,395 INFO L402 AbstractCegarLoop]: === Iteration 500 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1144910281, now seen corresponding path program 109 times [2022-03-03 19:24:00,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:00,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382370165] [2022-03-03 19:24:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:00,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:00,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382370165] [2022-03-03 19:24:00,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382370165] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:00,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074479256] [2022-03-03 19:24:00,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:24:00,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:00,827 INFO L229 MonitoredProcess]: Starting monitored process 310 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:00,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Waiting until timeout for monitored process [2022-03-03 19:24:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:00,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:00,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:01,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:01,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 101 [2022-03-03 19:24:02,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:02,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 178 [2022-03-03 19:24:02,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 152 [2022-03-03 19:24:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:03,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:04,902 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:04,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 166 [2022-03-03 19:24:05,587 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:05,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:24:05,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:05,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:24:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:05,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074479256] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:05,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:05,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:05,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295510757] [2022-03-03 19:24:05,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:05,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:05,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:05,668 INFO L87 Difference]: Start difference. First operand 675 states and 1901 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:06,304 INFO L93 Difference]: Finished difference Result 729 states and 2042 transitions. [2022-03-03 19:24:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:24:06,305 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:06,306 INFO L225 Difference]: With dead ends: 729 [2022-03-03 19:24:06,306 INFO L226 Difference]: Without dead ends: 709 [2022-03-03 19:24:06,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:24:06,306 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:06,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 258 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 307 Invalid, 0 Unknown, 308 Unchecked, 0.2s Time] [2022-03-03 19:24:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-03 19:24:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 667. [2022-03-03 19:24:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 2.8273273273273274) internal successors, (1883), 666 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1883 transitions. [2022-03-03 19:24:06,313 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1883 transitions. Word has length 20 [2022-03-03 19:24:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:06,313 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1883 transitions. [2022-03-03 19:24:06,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1883 transitions. [2022-03-03 19:24:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:06,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:06,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:06,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Ended with exit code 0 [2022-03-03 19:24:06,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2022-03-03 19:24:06,514 INFO L402 AbstractCegarLoop]: === Iteration 501 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:06,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash -595490201, now seen corresponding path program 110 times [2022-03-03 19:24:06,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:06,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365288673] [2022-03-03 19:24:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:06,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:06,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:06,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365288673] [2022-03-03 19:24:06,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365288673] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:06,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534905943] [2022-03-03 19:24:06,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:24:06,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:06,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:06,952 INFO L229 MonitoredProcess]: Starting monitored process 311 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:06,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Waiting until timeout for monitored process [2022-03-03 19:24:06,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:06,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:06,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:24:06,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:07,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:07,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:09,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:09,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 146 [2022-03-03 19:24:09,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-03-03 19:24:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:09,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:10,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:10,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 138 [2022-03-03 19:24:10,755 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:10,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:24:10,761 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:10,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:24:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:10,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534905943] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:10,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:10,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:10,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351749973] [2022-03-03 19:24:10,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:10,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:10,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:10,838 INFO L87 Difference]: Start difference. First operand 667 states and 1883 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:11,319 INFO L93 Difference]: Finished difference Result 790 states and 2238 transitions. [2022-03-03 19:24:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:24:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:11,320 INFO L225 Difference]: With dead ends: 790 [2022-03-03 19:24:11,320 INFO L226 Difference]: Without dead ends: 784 [2022-03-03 19:24:11,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:24:11,321 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:11,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 411 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 131 Unchecked, 0.1s Time] [2022-03-03 19:24:11,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-03-03 19:24:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 673. [2022-03-03 19:24:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 2.830357142857143) internal successors, (1902), 672 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1902 transitions. [2022-03-03 19:24:11,328 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1902 transitions. Word has length 20 [2022-03-03 19:24:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:11,328 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 1902 transitions. [2022-03-03 19:24:11,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1902 transitions. [2022-03-03 19:24:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:11,329 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:11,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:11,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Ended with exit code 0 [2022-03-03 19:24:11,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500,311 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:11,543 INFO L402 AbstractCegarLoop]: === Iteration 502 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -784447321, now seen corresponding path program 111 times [2022-03-03 19:24:11,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:11,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638565680] [2022-03-03 19:24:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:11,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:12,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:12,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638565680] [2022-03-03 19:24:12,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638565680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:12,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540424715] [2022-03-03 19:24:12,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:24:12,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:12,141 INFO L229 MonitoredProcess]: Starting monitored process 312 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Waiting until timeout for monitored process [2022-03-03 19:24:12,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:24:12,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:12,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:12,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:12,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:12,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:14,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:14,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 225 [2022-03-03 19:24:14,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 193 [2022-03-03 19:24:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:15,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:16,705 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:16,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 199 [2022-03-03 19:24:17,139 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:17,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:24:17,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:17,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:24:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:17,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540424715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:17,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:17,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:17,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264266826] [2022-03-03 19:24:17,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:17,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:17,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:17,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:17,178 INFO L87 Difference]: Start difference. First operand 673 states and 1902 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:17,843 INFO L93 Difference]: Finished difference Result 789 states and 2249 transitions. [2022-03-03 19:24:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:24:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:17,844 INFO L225 Difference]: With dead ends: 789 [2022-03-03 19:24:17,844 INFO L226 Difference]: Without dead ends: 767 [2022-03-03 19:24:17,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:24:17,845 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:17,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 294 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 216 Unchecked, 0.1s Time] [2022-03-03 19:24:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-03 19:24:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 690. [2022-03-03 19:24:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.8229317851959363) internal successors, (1945), 689 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1945 transitions. [2022-03-03 19:24:17,851 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1945 transitions. Word has length 20 [2022-03-03 19:24:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:17,851 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1945 transitions. [2022-03-03 19:24:17,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1945 transitions. [2022-03-03 19:24:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:17,852 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:17,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:17,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:18,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable501 [2022-03-03 19:24:18,068 INFO L402 AbstractCegarLoop]: === Iteration 503 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:18,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:18,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1413928803, now seen corresponding path program 112 times [2022-03-03 19:24:18,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:18,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603706089] [2022-03-03 19:24:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:18,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:18,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:18,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603706089] [2022-03-03 19:24:18,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603706089] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:18,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064945983] [2022-03-03 19:24:18,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:24:18,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:18,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:18,392 INFO L229 MonitoredProcess]: Starting monitored process 313 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:18,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Waiting until timeout for monitored process [2022-03-03 19:24:18,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:24:18,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:18,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:18,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:18,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:18,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:20,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:20,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 197 [2022-03-03 19:24:20,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 169 [2022-03-03 19:24:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:21,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:21,899 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:21,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 151 [2022-03-03 19:24:22,144 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:22,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:24:22,148 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:22,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:24:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:22,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064945983] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:22,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:22,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:22,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784809629] [2022-03-03 19:24:22,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:22,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:22,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:22,209 INFO L87 Difference]: Start difference. First operand 690 states and 1945 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:22,900 INFO L93 Difference]: Finished difference Result 818 states and 2299 transitions. [2022-03-03 19:24:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:24:22,901 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:22,902 INFO L225 Difference]: With dead ends: 818 [2022-03-03 19:24:22,902 INFO L226 Difference]: Without dead ends: 809 [2022-03-03 19:24:22,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:24:22,902 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 72 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:22,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 332 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 0 Unknown, 202 Unchecked, 0.2s Time] [2022-03-03 19:24:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-03-03 19:24:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 710. [2022-03-03 19:24:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.8166431593794075) internal successors, (1997), 709 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1997 transitions. [2022-03-03 19:24:22,910 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1997 transitions. Word has length 20 [2022-03-03 19:24:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:22,910 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 1997 transitions. [2022-03-03 19:24:22,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1997 transitions. [2022-03-03 19:24:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:22,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:22,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:22,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:23,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502,313 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:23,114 INFO L402 AbstractCegarLoop]: === Iteration 504 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash 535754791, now seen corresponding path program 113 times [2022-03-03 19:24:23,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:23,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447786876] [2022-03-03 19:24:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:23,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:23,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447786876] [2022-03-03 19:24:23,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447786876] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:23,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788077145] [2022-03-03 19:24:23,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:24:23,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:23,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:23,539 INFO L229 MonitoredProcess]: Starting monitored process 314 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:23,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Waiting until timeout for monitored process [2022-03-03 19:24:23,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:23,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:23,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:23,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:24,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 192 [2022-03-03 19:24:24,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 162 [2022-03-03 19:24:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:24,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:26,309 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:26,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 178 [2022-03-03 19:24:26,700 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:24:26,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 82 [2022-03-03 19:24:26,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 65 [2022-03-03 19:24:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:26,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788077145] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:26,705 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:26,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:24:26,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242956587] [2022-03-03 19:24:26,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:26,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:24:26,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:24:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:24:26,706 INFO L87 Difference]: Start difference. First operand 710 states and 1997 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:30,187 INFO L93 Difference]: Finished difference Result 1245 states and 3383 transitions. [2022-03-03 19:24:30,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:24:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:30,189 INFO L225 Difference]: With dead ends: 1245 [2022-03-03 19:24:30,189 INFO L226 Difference]: Without dead ends: 1215 [2022-03-03 19:24:30,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:24:30,189 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 274 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:30,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 475 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:24:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-03 19:24:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 732. [2022-03-03 19:24:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 2.849521203830369) internal successors, (2083), 731 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 2083 transitions. [2022-03-03 19:24:30,200 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 2083 transitions. Word has length 20 [2022-03-03 19:24:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:30,200 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 2083 transitions. [2022-03-03 19:24:30,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 2083 transitions. [2022-03-03 19:24:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:30,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:30,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:30,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:30,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503,314 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:30,418 INFO L402 AbstractCegarLoop]: === Iteration 505 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 558351339, now seen corresponding path program 114 times [2022-03-03 19:24:30,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:30,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108455114] [2022-03-03 19:24:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:30,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:30,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108455114] [2022-03-03 19:24:30,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108455114] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:30,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595534785] [2022-03-03 19:24:30,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:24:30,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:30,801 INFO L229 MonitoredProcess]: Starting monitored process 315 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:30,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Waiting until timeout for monitored process [2022-03-03 19:24:30,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:24:30,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:30,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:30,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:31,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:31,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:32,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:32,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 208 [2022-03-03 19:24:32,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 180 [2022-03-03 19:24:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:33,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:35,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:35,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 179 [2022-03-03 19:24:36,028 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:36,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:24:36,034 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:36,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:24:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:36,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595534785] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:36,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:36,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:36,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53022330] [2022-03-03 19:24:36,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:36,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:36,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:36,105 INFO L87 Difference]: Start difference. First operand 732 states and 2083 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:36,738 INFO L93 Difference]: Finished difference Result 816 states and 2355 transitions. [2022-03-03 19:24:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:36,739 INFO L225 Difference]: With dead ends: 816 [2022-03-03 19:24:36,739 INFO L226 Difference]: Without dead ends: 794 [2022-03-03 19:24:36,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:24:36,740 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:36,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 263 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 436 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2022-03-03 19:24:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-03-03 19:24:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 735. [2022-03-03 19:24:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.852861035422343) internal successors, (2094), 734 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2094 transitions. [2022-03-03 19:24:36,747 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2094 transitions. Word has length 20 [2022-03-03 19:24:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:36,747 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 2094 transitions. [2022-03-03 19:24:36,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2094 transitions. [2022-03-03 19:24:36,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:36,748 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:36,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:36,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:36,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 315 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable504 [2022-03-03 19:24:36,964 INFO L402 AbstractCegarLoop]: === Iteration 506 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1129806145, now seen corresponding path program 115 times [2022-03-03 19:24:36,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:36,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068089798] [2022-03-03 19:24:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:37,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:37,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068089798] [2022-03-03 19:24:37,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068089798] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:37,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035644419] [2022-03-03 19:24:37,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:24:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:37,637 INFO L229 MonitoredProcess]: Starting monitored process 316 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:37,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Waiting until timeout for monitored process [2022-03-03 19:24:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:37,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:37,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:37,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:37,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:39,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:39,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-03-03 19:24:39,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-03-03 19:24:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:40,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:40,992 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:40,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 151 [2022-03-03 19:24:41,600 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:41,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:24:41,606 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:41,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:24:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:41,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035644419] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:41,686 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:41,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:41,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552944477] [2022-03-03 19:24:41,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:41,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:41,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:41,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:41,686 INFO L87 Difference]: Start difference. First operand 735 states and 2094 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:42,751 INFO L93 Difference]: Finished difference Result 854 states and 2442 transitions. [2022-03-03 19:24:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:24:42,751 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:42,753 INFO L225 Difference]: With dead ends: 854 [2022-03-03 19:24:42,753 INFO L226 Difference]: Without dead ends: 810 [2022-03-03 19:24:42,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:24:42,753 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 85 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 432 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:42,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 370 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 376 Invalid, 0 Unknown, 432 Unchecked, 0.2s Time] [2022-03-03 19:24:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-03-03 19:24:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 742. [2022-03-03 19:24:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.8623481781376516) internal successors, (2121), 741 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2121 transitions. [2022-03-03 19:24:42,760 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2121 transitions. Word has length 20 [2022-03-03 19:24:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:42,760 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 2121 transitions. [2022-03-03 19:24:42,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2121 transitions. [2022-03-03 19:24:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:42,761 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:42,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:42,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Ended with exit code 0 [2022-03-03 19:24:42,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505,316 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:42,963 INFO L402 AbstractCegarLoop]: === Iteration 507 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:42,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2102736767, now seen corresponding path program 116 times [2022-03-03 19:24:42,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:42,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684800621] [2022-03-03 19:24:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:43,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:43,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684800621] [2022-03-03 19:24:43,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684800621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:43,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115040558] [2022-03-03 19:24:43,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:24:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:43,331 INFO L229 MonitoredProcess]: Starting monitored process 317 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:43,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (317)] Waiting until timeout for monitored process [2022-03-03 19:24:43,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:43,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:43,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:43,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:43,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:43,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:46,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:46,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 212 [2022-03-03 19:24:46,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 176 [2022-03-03 19:24:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:47,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:48,723 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:48,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 199 [2022-03-03 19:24:49,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:49,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:24:49,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:49,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:24:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:49,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115040558] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:49,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:49,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:49,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632699296] [2022-03-03 19:24:49,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:49,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:49,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:49,682 INFO L87 Difference]: Start difference. First operand 742 states and 2121 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:50,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:50,034 INFO L93 Difference]: Finished difference Result 817 states and 2367 transitions. [2022-03-03 19:24:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:50,035 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:50,036 INFO L225 Difference]: With dead ends: 817 [2022-03-03 19:24:50,036 INFO L226 Difference]: Without dead ends: 798 [2022-03-03 19:24:50,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:24:50,036 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:50,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 245 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 349 Invalid, 0 Unknown, 348 Unchecked, 0.2s Time] [2022-03-03 19:24:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-03 19:24:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 747. [2022-03-03 19:24:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.8659517426273458) internal successors, (2138), 746 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 2138 transitions. [2022-03-03 19:24:50,043 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 2138 transitions. Word has length 20 [2022-03-03 19:24:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:50,044 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 2138 transitions. [2022-03-03 19:24:50,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 2138 transitions. [2022-03-03 19:24:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:50,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:50,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:50,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (317)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:50,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506,317 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:50,260 INFO L402 AbstractCegarLoop]: === Iteration 508 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1264634579, now seen corresponding path program 117 times [2022-03-03 19:24:50,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:50,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699511746] [2022-03-03 19:24:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:50,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:50,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:50,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699511746] [2022-03-03 19:24:50,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699511746] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:50,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973401739] [2022-03-03 19:24:50,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:24:50,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:50,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:50,587 INFO L229 MonitoredProcess]: Starting monitored process 318 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:50,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (318)] Waiting until timeout for monitored process [2022-03-03 19:24:50,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:24:50,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:50,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:24:50,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:50,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:50,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:53,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:53,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 179 [2022-03-03 19:24:53,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 153 [2022-03-03 19:24:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:54,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:55,817 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:55,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 199 [2022-03-03 19:24:56,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:56,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:24:56,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:56,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:24:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:56,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973401739] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:56,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:56,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:56,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162571507] [2022-03-03 19:24:56,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:56,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:56,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:56,516 INFO L87 Difference]: Start difference. First operand 747 states and 2138 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:56,767 INFO L93 Difference]: Finished difference Result 854 states and 2426 transitions. [2022-03-03 19:24:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:56,767 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:24:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:56,769 INFO L225 Difference]: With dead ends: 854 [2022-03-03 19:24:56,769 INFO L226 Difference]: Without dead ends: 848 [2022-03-03 19:24:56,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:24:56,769 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 67 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:56,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 296 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 142 Unchecked, 0.2s Time] [2022-03-03 19:24:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-03-03 19:24:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 753. [2022-03-03 19:24:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 2.860372340425532) internal successors, (2151), 752 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 2151 transitions. [2022-03-03 19:24:56,778 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 2151 transitions. Word has length 20 [2022-03-03 19:24:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:56,778 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 2151 transitions. [2022-03-03 19:24:56,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 2151 transitions. [2022-03-03 19:24:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:56,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:56,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:56,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (318)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:56,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507,318 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:56,991 INFO L402 AbstractCegarLoop]: === Iteration 509 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1453591699, now seen corresponding path program 118 times [2022-03-03 19:24:56,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:56,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731962905] [2022-03-03 19:24:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:57,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:57,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731962905] [2022-03-03 19:24:57,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731962905] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:57,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585662809] [2022-03-03 19:24:57,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:24:57,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:57,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:57,534 INFO L229 MonitoredProcess]: Starting monitored process 319 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:24:57,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (319)] Waiting until timeout for monitored process [2022-03-03 19:24:57,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:24:57,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:57,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:24:57,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:57,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:57,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:24:59,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:59,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 149 [2022-03-03 19:24:59,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 125 [2022-03-03 19:24:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:59,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:00,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:00,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 152 [2022-03-03 19:25:00,274 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:00,274 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:25:00,278 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:00,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:25:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:00,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585662809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:00,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:00,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:00,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685520278] [2022-03-03 19:25:00,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:00,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:00,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:00,319 INFO L87 Difference]: Start difference. First operand 753 states and 2151 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:00,947 INFO L93 Difference]: Finished difference Result 981 states and 2711 transitions. [2022-03-03 19:25:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:25:00,947 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:00,948 INFO L225 Difference]: With dead ends: 981 [2022-03-03 19:25:00,948 INFO L226 Difference]: Without dead ends: 947 [2022-03-03 19:25:00,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:00,949 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 98 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:00,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 409 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 429 Unchecked, 0.1s Time] [2022-03-03 19:25:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-03-03 19:25:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 776. [2022-03-03 19:25:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 2.8425806451612905) internal successors, (2203), 775 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2203 transitions. [2022-03-03 19:25:00,958 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2203 transitions. Word has length 20 [2022-03-03 19:25:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:00,958 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2203 transitions. [2022-03-03 19:25:00,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2203 transitions. [2022-03-03 19:25:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:00,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:00,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:00,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (319)] Ended with exit code 0 [2022-03-03 19:25:01,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508,319 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:01,163 INFO L402 AbstractCegarLoop]: === Iteration 510 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:01,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1223009359, now seen corresponding path program 119 times [2022-03-03 19:25:01,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:01,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631616511] [2022-03-03 19:25:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:01,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:01,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631616511] [2022-03-03 19:25:01,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631616511] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:01,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689448190] [2022-03-03 19:25:01,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:25:01,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:01,630 INFO L229 MonitoredProcess]: Starting monitored process 320 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:01,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (320)] Waiting until timeout for monitored process [2022-03-03 19:25:01,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:25:01,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:01,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:01,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:02,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 134 [2022-03-03 19:25:02,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-03-03 19:25:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:02,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:03,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:03,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 150 [2022-03-03 19:25:04,331 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:25:04,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 85 [2022-03-03 19:25:04,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2022-03-03 19:25:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:04,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689448190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:04,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:04,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:25:04,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648575932] [2022-03-03 19:25:04,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:04,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:25:04,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:25:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:25:04,338 INFO L87 Difference]: Start difference. First operand 776 states and 2203 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:07,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:07,352 INFO L93 Difference]: Finished difference Result 1382 states and 3713 transitions. [2022-03-03 19:25:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:25:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:07,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:07,354 INFO L225 Difference]: With dead ends: 1382 [2022-03-03 19:25:07,354 INFO L226 Difference]: Without dead ends: 1275 [2022-03-03 19:25:07,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=308, Invalid=1672, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:25:07,355 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 345 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:07,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 438 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1187 Invalid, 0 Unknown, 71 Unchecked, 0.6s Time] [2022-03-03 19:25:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-03 19:25:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 722. [2022-03-03 19:25:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 2.868238557558946) internal successors, (2068), 721 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 2068 transitions. [2022-03-03 19:25:07,365 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 2068 transitions. Word has length 20 [2022-03-03 19:25:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:07,365 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 2068 transitions. [2022-03-03 19:25:07,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 2068 transitions. [2022-03-03 19:25:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:07,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:07,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:07,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (320)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:07,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509,320 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:07,582 INFO L402 AbstractCegarLoop]: === Iteration 511 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:07,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:07,582 INFO L85 PathProgramCache]: Analyzing trace with hash -617139305, now seen corresponding path program 120 times [2022-03-03 19:25:07,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:07,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462760498] [2022-03-03 19:25:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:07,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:08,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:08,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462760498] [2022-03-03 19:25:08,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462760498] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:08,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736760202] [2022-03-03 19:25:08,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:25:08,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:08,076 INFO L229 MonitoredProcess]: Starting monitored process 321 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:08,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (321)] Waiting until timeout for monitored process [2022-03-03 19:25:08,101 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:25:08,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:08,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:25:08,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:08,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:08,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:10,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:10,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 222 [2022-03-03 19:25:10,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 194 [2022-03-03 19:25:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:11,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:13,504 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:13,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 195 [2022-03-03 19:25:14,203 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:14,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:25:14,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:14,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:25:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:14,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736760202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:14,274 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:14,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:14,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894460958] [2022-03-03 19:25:14,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:14,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:14,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:14,275 INFO L87 Difference]: Start difference. First operand 722 states and 2068 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:14,801 INFO L93 Difference]: Finished difference Result 807 states and 2335 transitions. [2022-03-03 19:25:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:25:14,801 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:14,802 INFO L225 Difference]: With dead ends: 807 [2022-03-03 19:25:14,802 INFO L226 Difference]: Without dead ends: 785 [2022-03-03 19:25:14,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:25:14,802 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:14,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 263 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 290 Invalid, 0 Unknown, 343 Unchecked, 0.2s Time] [2022-03-03 19:25:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-03-03 19:25:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 711. [2022-03-03 19:25:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.8647887323943664) internal successors, (2034), 710 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 2034 transitions. [2022-03-03 19:25:14,809 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 2034 transitions. Word has length 20 [2022-03-03 19:25:14,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:14,809 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 2034 transitions. [2022-03-03 19:25:14,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:14,809 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 2034 transitions. [2022-03-03 19:25:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:14,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:14,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:14,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (321)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:15,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 321 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable510 [2022-03-03 19:25:15,026 INFO L402 AbstractCegarLoop]: === Iteration 512 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash -410793333, now seen corresponding path program 121 times [2022-03-03 19:25:15,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:15,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771327162] [2022-03-03 19:25:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:15,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:15,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:15,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771327162] [2022-03-03 19:25:15,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771327162] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:15,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114319912] [2022-03-03 19:25:15,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:25:15,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:15,526 INFO L229 MonitoredProcess]: Starting monitored process 322 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:15,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (322)] Waiting until timeout for monitored process [2022-03-03 19:25:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:15,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:15,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:15,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:17,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:17,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-03-03 19:25:17,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 111 [2022-03-03 19:25:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:17,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:18,576 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:18,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 144 [2022-03-03 19:25:18,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:18,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:25:18,945 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:18,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:25:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:19,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114319912] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:19,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:19,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:19,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442845514] [2022-03-03 19:25:19,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:19,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:19,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:19,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:19,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:19,015 INFO L87 Difference]: Start difference. First operand 711 states and 2034 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:20,001 INFO L93 Difference]: Finished difference Result 954 states and 2716 transitions. [2022-03-03 19:25:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:25:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:20,003 INFO L225 Difference]: With dead ends: 954 [2022-03-03 19:25:20,003 INFO L226 Difference]: Without dead ends: 942 [2022-03-03 19:25:20,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:25:20,004 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 109 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:20,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 572 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 566 Invalid, 0 Unknown, 430 Unchecked, 0.3s Time] [2022-03-03 19:25:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-03-03 19:25:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 729. [2022-03-03 19:25:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 2.866758241758242) internal successors, (2087), 728 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 2087 transitions. [2022-03-03 19:25:20,014 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 2087 transitions. Word has length 20 [2022-03-03 19:25:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:20,014 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 2087 transitions. [2022-03-03 19:25:20,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 2087 transitions. [2022-03-03 19:25:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:20,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:20,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:20,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (322)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:20,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable511 [2022-03-03 19:25:20,222 INFO L402 AbstractCegarLoop]: === Iteration 513 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash -599750453, now seen corresponding path program 122 times [2022-03-03 19:25:20,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:20,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975856878] [2022-03-03 19:25:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:20,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:20,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:20,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975856878] [2022-03-03 19:25:20,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975856878] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:20,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729630809] [2022-03-03 19:25:20,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:25:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:20,641 INFO L229 MonitoredProcess]: Starting monitored process 323 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:20,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (323)] Waiting until timeout for monitored process [2022-03-03 19:25:20,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:25:20,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:20,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:20,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:20,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:20,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:22,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:22,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 141 [2022-03-03 19:25:22,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 115 [2022-03-03 19:25:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:22,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:23,226 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:23,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 129 [2022-03-03 19:25:23,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:23,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:25:23,465 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:23,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:25:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:23,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729630809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:23,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:23,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:23,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430292138] [2022-03-03 19:25:23,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:23,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:23,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:23,523 INFO L87 Difference]: Start difference. First operand 729 states and 2087 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:23,705 INFO L93 Difference]: Finished difference Result 830 states and 2365 transitions. [2022-03-03 19:25:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:25:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:23,707 INFO L225 Difference]: With dead ends: 830 [2022-03-03 19:25:23,707 INFO L226 Difference]: Without dead ends: 784 [2022-03-03 19:25:23,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:25:23,707 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 86 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:23,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 262 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 378 Unchecked, 0.1s Time] [2022-03-03 19:25:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-03-03 19:25:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 717. [2022-03-03 19:25:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 2.868715083798883) internal successors, (2054), 716 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2054 transitions. [2022-03-03 19:25:23,714 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2054 transitions. Word has length 20 [2022-03-03 19:25:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:23,714 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 2054 transitions. [2022-03-03 19:25:23,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2054 transitions. [2022-03-03 19:25:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:23,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:23,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:23,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (323)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:23,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512,323 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:23,921 INFO L402 AbstractCegarLoop]: === Iteration 514 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash -443781239, now seen corresponding path program 123 times [2022-03-03 19:25:23,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:23,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068016188] [2022-03-03 19:25:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:24,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:24,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068016188] [2022-03-03 19:25:24,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068016188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:24,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488119107] [2022-03-03 19:25:24,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:25:24,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:24,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:24,532 INFO L229 MonitoredProcess]: Starting monitored process 324 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:24,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (324)] Waiting until timeout for monitored process [2022-03-03 19:25:24,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:25:24,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:24,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:24,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:24,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:24,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:26,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:26,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 196 [2022-03-03 19:25:26,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 168 [2022-03-03 19:25:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:27,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:28,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:28,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 129 [2022-03-03 19:25:28,458 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:28,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:25:28,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:28,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:25:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:28,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488119107] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:28,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:28,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:28,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283070755] [2022-03-03 19:25:28,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:28,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:28,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:28,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:28,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:28,519 INFO L87 Difference]: Start difference. First operand 717 states and 2054 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:30,005 INFO L93 Difference]: Finished difference Result 858 states and 2483 transitions. [2022-03-03 19:25:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:25:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:30,006 INFO L225 Difference]: With dead ends: 858 [2022-03-03 19:25:30,007 INFO L226 Difference]: Without dead ends: 801 [2022-03-03 19:25:30,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:25:30,007 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 62 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:30,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 440 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 491 Invalid, 0 Unknown, 277 Unchecked, 0.3s Time] [2022-03-03 19:25:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-03 19:25:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 733. [2022-03-03 19:25:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 2.879781420765027) internal successors, (2108), 732 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 2108 transitions. [2022-03-03 19:25:30,014 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 2108 transitions. Word has length 20 [2022-03-03 19:25:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:30,014 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 2108 transitions. [2022-03-03 19:25:30,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 2108 transitions. [2022-03-03 19:25:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:30,015 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:30,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:30,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (324)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:30,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513,324 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:30,219 INFO L402 AbstractCegarLoop]: === Iteration 515 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 846600581, now seen corresponding path program 124 times [2022-03-03 19:25:30,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:30,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560480614] [2022-03-03 19:25:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:30,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:30,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560480614] [2022-03-03 19:25:30,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560480614] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:30,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166820079] [2022-03-03 19:25:30,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:25:30,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:30,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:30,780 INFO L229 MonitoredProcess]: Starting monitored process 325 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:30,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (325)] Waiting until timeout for monitored process [2022-03-03 19:25:30,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:25:30,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:30,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:30,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:30,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:30,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:31,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:31,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 184 [2022-03-03 19:25:31,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 156 [2022-03-03 19:25:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:32,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:33,276 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:33,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 160 [2022-03-03 19:25:33,656 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:33,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:25:33,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:33,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:25:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:33,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166820079] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:33,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:33,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:33,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261962062] [2022-03-03 19:25:33,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:33,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:33,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:33,722 INFO L87 Difference]: Start difference. First operand 733 states and 2108 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:34,716 INFO L93 Difference]: Finished difference Result 885 states and 2516 transitions. [2022-03-03 19:25:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:25:34,716 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:34,717 INFO L225 Difference]: With dead ends: 885 [2022-03-03 19:25:34,717 INFO L226 Difference]: Without dead ends: 855 [2022-03-03 19:25:34,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:34,718 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 97 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:34,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 361 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 548 Invalid, 0 Unknown, 299 Unchecked, 0.3s Time] [2022-03-03 19:25:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-03-03 19:25:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 749. [2022-03-03 19:25:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 2.893048128342246) internal successors, (2164), 748 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2164 transitions. [2022-03-03 19:25:34,725 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2164 transitions. Word has length 20 [2022-03-03 19:25:34,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:34,725 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 2164 transitions. [2022-03-03 19:25:34,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2164 transitions. [2022-03-03 19:25:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:34,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:34,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:34,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (325)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:34,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 325 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable514 [2022-03-03 19:25:34,927 INFO L402 AbstractCegarLoop]: === Iteration 516 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1917060185, now seen corresponding path program 125 times [2022-03-03 19:25:34,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:34,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055374260] [2022-03-03 19:25:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:35,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:35,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055374260] [2022-03-03 19:25:35,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055374260] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:35,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797818013] [2022-03-03 19:25:35,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:25:35,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:35,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:35,396 INFO L229 MonitoredProcess]: Starting monitored process 326 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:35,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (326)] Waiting until timeout for monitored process [2022-03-03 19:25:35,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:25:35,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:35,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:25:35,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:35,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:36,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 190 [2022-03-03 19:25:36,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 162 [2022-03-03 19:25:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:37,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:38,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:38,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 153 [2022-03-03 19:25:39,223 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:25:39,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:25:39,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:25:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:39,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797818013] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:39,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:39,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:25:39,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620288073] [2022-03-03 19:25:39,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:39,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:25:39,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:25:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:25:39,230 INFO L87 Difference]: Start difference. First operand 749 states and 2164 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:42,907 INFO L93 Difference]: Finished difference Result 1152 states and 3226 transitions. [2022-03-03 19:25:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:25:42,907 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:42,909 INFO L225 Difference]: With dead ends: 1152 [2022-03-03 19:25:42,909 INFO L226 Difference]: Without dead ends: 1122 [2022-03-03 19:25:42,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=254, Invalid=1552, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:25:42,909 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 190 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:42,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 484 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1394 Invalid, 0 Unknown, 26 Unchecked, 0.8s Time] [2022-03-03 19:25:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-03-03 19:25:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 755. [2022-03-03 19:25:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.8978779840848805) internal successors, (2185), 754 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2185 transitions. [2022-03-03 19:25:42,918 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2185 transitions. Word has length 20 [2022-03-03 19:25:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:42,918 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 2185 transitions. [2022-03-03 19:25:42,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2185 transitions. [2022-03-03 19:25:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:42,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:42,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:42,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (326)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:43,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515,326 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:43,134 INFO L402 AbstractCegarLoop]: === Iteration 517 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:43,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:43,134 INFO L85 PathProgramCache]: Analyzing trace with hash -40928793, now seen corresponding path program 126 times [2022-03-03 19:25:43,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:43,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275289140] [2022-03-03 19:25:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:43,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:43,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:43,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275289140] [2022-03-03 19:25:43,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275289140] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:43,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996127092] [2022-03-03 19:25:43,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:25:43,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:43,452 INFO L229 MonitoredProcess]: Starting monitored process 327 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:43,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (327)] Waiting until timeout for monitored process [2022-03-03 19:25:43,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:25:43,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:43,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:43,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:43,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:43,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:44,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:44,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 194 [2022-03-03 19:25:44,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 164 [2022-03-03 19:25:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:45,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:45,875 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:45,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 153 [2022-03-03 19:25:46,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:46,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:25:46,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:46,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:25:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:46,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996127092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:46,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:46,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:46,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389478846] [2022-03-03 19:25:46,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:46,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:46,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:46,224 INFO L87 Difference]: Start difference. First operand 755 states and 2185 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:47,146 INFO L93 Difference]: Finished difference Result 880 states and 2516 transitions. [2022-03-03 19:25:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:25:47,146 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:47,147 INFO L225 Difference]: With dead ends: 880 [2022-03-03 19:25:47,147 INFO L226 Difference]: Without dead ends: 850 [2022-03-03 19:25:47,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:25:47,148 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:47,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 289 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 464 Invalid, 0 Unknown, 329 Unchecked, 0.2s Time] [2022-03-03 19:25:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-03-03 19:25:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 759. [2022-03-03 19:25:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.9089709762532983) internal successors, (2205), 758 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2205 transitions. [2022-03-03 19:25:47,155 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2205 transitions. Word has length 20 [2022-03-03 19:25:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:47,155 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 2205 transitions. [2022-03-03 19:25:47,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2205 transitions. [2022-03-03 19:25:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:47,156 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:47,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:47,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (327)] Ended with exit code 0 [2022-03-03 19:25:47,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516,327 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:47,373 INFO L402 AbstractCegarLoop]: === Iteration 518 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:47,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1944022027, now seen corresponding path program 127 times [2022-03-03 19:25:47,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:47,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028409919] [2022-03-03 19:25:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:48,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:48,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028409919] [2022-03-03 19:25:48,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028409919] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:48,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872756246] [2022-03-03 19:25:48,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:25:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:48,002 INFO L229 MonitoredProcess]: Starting monitored process 328 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:48,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (328)] Waiting until timeout for monitored process [2022-03-03 19:25:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:48,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:48,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:48,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:48,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:48,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 186 [2022-03-03 19:25:48,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 156 [2022-03-03 19:25:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:49,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:50,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:50,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 156 [2022-03-03 19:25:50,667 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:50,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:25:50,673 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:50,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:25:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:50,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872756246] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:50,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:50,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:50,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803062173] [2022-03-03 19:25:50,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:50,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:50,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:50,720 INFO L87 Difference]: Start difference. First operand 759 states and 2205 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:52,278 INFO L93 Difference]: Finished difference Result 863 states and 2534 transitions. [2022-03-03 19:25:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:25:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:52,279 INFO L225 Difference]: With dead ends: 863 [2022-03-03 19:25:52,279 INFO L226 Difference]: Without dead ends: 825 [2022-03-03 19:25:52,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:52,280 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:52,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 297 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 533 Invalid, 0 Unknown, 109 Unchecked, 0.3s Time] [2022-03-03 19:25:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-03-03 19:25:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 761. [2022-03-03 19:25:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 2.9157894736842107) internal successors, (2216), 760 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 2216 transitions. [2022-03-03 19:25:52,288 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 2216 transitions. Word has length 20 [2022-03-03 19:25:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:52,288 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 2216 transitions. [2022-03-03 19:25:52,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2216 transitions. [2022-03-03 19:25:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:52,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:52,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:52,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (328)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:52,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 328 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable517 [2022-03-03 19:25:52,489 INFO L402 AbstractCegarLoop]: === Iteration 519 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:52,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:52,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1229548317, now seen corresponding path program 128 times [2022-03-03 19:25:52,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:52,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129722723] [2022-03-03 19:25:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:52,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:52,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129722723] [2022-03-03 19:25:52,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129722723] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:52,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50029594] [2022-03-03 19:25:52,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:25:52,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:52,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:52,937 INFO L229 MonitoredProcess]: Starting monitored process 329 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:52,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (329)] Waiting until timeout for monitored process [2022-03-03 19:25:52,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:25:52,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:52,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:52,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:53,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:53,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:54,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:54,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 193 [2022-03-03 19:25:54,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 163 [2022-03-03 19:25:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:55,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:56,115 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:56,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 160 [2022-03-03 19:25:56,421 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:56,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 99 [2022-03-03 19:25:56,426 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:56,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 85 [2022-03-03 19:25:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:56,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50029594] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:56,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:56,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:56,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683017501] [2022-03-03 19:25:56,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:56,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:56,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:56,466 INFO L87 Difference]: Start difference. First operand 761 states and 2216 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:57,806 INFO L93 Difference]: Finished difference Result 953 states and 2697 transitions. [2022-03-03 19:25:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:25:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:25:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:57,808 INFO L225 Difference]: With dead ends: 953 [2022-03-03 19:25:57,808 INFO L226 Difference]: Without dead ends: 923 [2022-03-03 19:25:57,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:25:57,808 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 124 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:57,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 366 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 688 Invalid, 0 Unknown, 326 Unchecked, 0.3s Time] [2022-03-03 19:25:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-03-03 19:25:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 761. [2022-03-03 19:25:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 2.9157894736842107) internal successors, (2216), 760 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 2216 transitions. [2022-03-03 19:25:57,817 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 2216 transitions. Word has length 20 [2022-03-03 19:25:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:57,817 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 2216 transitions. [2022-03-03 19:25:57,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2216 transitions. [2022-03-03 19:25:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:57,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:57,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:57,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (329)] Ended with exit code 0 [2022-03-03 19:25:58,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518,329 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:58,031 INFO L402 AbstractCegarLoop]: === Iteration 520 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2105278311, now seen corresponding path program 129 times [2022-03-03 19:25:58,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:58,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172030344] [2022-03-03 19:25:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:58,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:58,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172030344] [2022-03-03 19:25:58,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172030344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:58,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359892219] [2022-03-03 19:25:58,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:25:58,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:58,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:58,315 INFO L229 MonitoredProcess]: Starting monitored process 330 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:25:58,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (330)] Waiting until timeout for monitored process [2022-03-03 19:25:58,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:25:58,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:58,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:25:58,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:58,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:58,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:25:59,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:59,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 198 [2022-03-03 19:25:59,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 168 [2022-03-03 19:26:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:00,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:00,941 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:00,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2022-03-03 19:26:01,210 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:01,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:26:01,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:01,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:26:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:01,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359892219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:01,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:01,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:01,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005917620] [2022-03-03 19:26:01,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:01,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:01,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:01,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:01,252 INFO L87 Difference]: Start difference. First operand 761 states and 2216 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:02,640 INFO L93 Difference]: Finished difference Result 1045 states and 2952 transitions. [2022-03-03 19:26:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:26:02,641 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:26:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:02,642 INFO L225 Difference]: With dead ends: 1045 [2022-03-03 19:26:02,642 INFO L226 Difference]: Without dead ends: 1024 [2022-03-03 19:26:02,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:26:02,643 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 148 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:02,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 448 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 634 Invalid, 0 Unknown, 454 Unchecked, 0.3s Time] [2022-03-03 19:26:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-03-03 19:26:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 767. [2022-03-03 19:26:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 2.933420365535248) internal successors, (2247), 766 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2247 transitions. [2022-03-03 19:26:02,652 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2247 transitions. Word has length 20 [2022-03-03 19:26:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:02,652 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 2247 transitions. [2022-03-03 19:26:02,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2247 transitions. [2022-03-03 19:26:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:02,653 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:02,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:26:02,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (330)] Ended with exit code 0 [2022-03-03 19:26:02,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519,330 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:02,860 INFO L402 AbstractCegarLoop]: === Iteration 521 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 181964969, now seen corresponding path program 130 times [2022-03-03 19:26:02,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:02,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948376094] [2022-03-03 19:26:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:03,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:03,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948376094] [2022-03-03 19:26:03,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948376094] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:03,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103597382] [2022-03-03 19:26:03,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:26:03,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:03,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:03,224 INFO L229 MonitoredProcess]: Starting monitored process 331 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:26:03,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (331)] Waiting until timeout for monitored process [2022-03-03 19:26:03,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:26:03,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:26:03,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:03,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:03,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:26:04,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:04,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 198 [2022-03-03 19:26:04,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 168 [2022-03-03 19:26:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:05,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:06,891 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:06,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 157 [2022-03-03 19:26:07,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:07,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 99 [2022-03-03 19:26:07,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:07,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 85 [2022-03-03 19:26:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:07,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103597382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:07,288 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:07,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:07,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911592885] [2022-03-03 19:26:07,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:07,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:07,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:07,288 INFO L87 Difference]: Start difference. First operand 767 states and 2247 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:09,073 INFO L93 Difference]: Finished difference Result 927 states and 2693 transitions. [2022-03-03 19:26:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:26:09,073 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:26:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:09,075 INFO L225 Difference]: With dead ends: 927 [2022-03-03 19:26:09,075 INFO L226 Difference]: Without dead ends: 897 [2022-03-03 19:26:09,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:26:09,075 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:09,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 307 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 547 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2022-03-03 19:26:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-03 19:26:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 767. [2022-03-03 19:26:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 2.933420365535248) internal successors, (2247), 766 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2247 transitions. [2022-03-03 19:26:09,083 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2247 transitions. Word has length 20 [2022-03-03 19:26:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:09,083 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 2247 transitions. [2022-03-03 19:26:09,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2247 transitions. [2022-03-03 19:26:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:09,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:09,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:26:09,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (331)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:09,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 331 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable520 [2022-03-03 19:26:09,285 INFO L402 AbstractCegarLoop]: === Iteration 522 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 807918023, now seen corresponding path program 131 times [2022-03-03 19:26:09,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:09,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802915111] [2022-03-03 19:26:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:09,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:09,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:09,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802915111] [2022-03-03 19:26:09,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802915111] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:09,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547409713] [2022-03-03 19:26:09,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:26:09,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:09,672 INFO L229 MonitoredProcess]: Starting monitored process 332 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:26:09,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (332)] Waiting until timeout for monitored process [2022-03-03 19:26:09,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:26:09,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:09,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:26:09,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:09,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:26:10,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 185 [2022-03-03 19:26:10,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 155 [2022-03-03 19:26:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:11,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:13,057 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:13,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 157 [2022-03-03 19:26:13,495 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:26:13,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 78 [2022-03-03 19:26:13,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-03-03 19:26:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:13,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547409713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:13,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:13,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:26:13,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871766478] [2022-03-03 19:26:13,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:13,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:26:13,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:13,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:26:13,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:26:13,501 INFO L87 Difference]: Start difference. First operand 767 states and 2247 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:19,017 INFO L93 Difference]: Finished difference Result 1488 states and 4120 transitions. [2022-03-03 19:26:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 19:26:19,018 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:26:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:19,020 INFO L225 Difference]: With dead ends: 1488 [2022-03-03 19:26:19,020 INFO L226 Difference]: Without dead ends: 1450 [2022-03-03 19:26:19,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=355, Invalid=2095, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 19:26:19,020 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 364 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:19,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 447 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 19:26:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2022-03-03 19:26:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 769. [2022-03-03 19:26:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.9401041666666665) internal successors, (2258), 768 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2258 transitions. [2022-03-03 19:26:19,032 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2258 transitions. Word has length 20 [2022-03-03 19:26:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:19,032 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 2258 transitions. [2022-03-03 19:26:19,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2258 transitions. [2022-03-03 19:26:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:19,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:19,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:26:19,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (332)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:19,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521,332 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:19,248 INFO L402 AbstractCegarLoop]: === Iteration 523 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2139918517, now seen corresponding path program 132 times [2022-03-03 19:26:19,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:19,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766351362] [2022-03-03 19:26:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:19,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:19,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:19,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766351362] [2022-03-03 19:26:19,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766351362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:19,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826490417] [2022-03-03 19:26:19,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:26:19,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:19,627 INFO L229 MonitoredProcess]: Starting monitored process 333 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:26:19,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (333)] Waiting until timeout for monitored process [2022-03-03 19:26:19,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:26:19,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:19,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:26:19,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:19,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:26:20,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 187 [2022-03-03 19:26:20,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 157 [2022-03-03 19:26:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:20,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:22,200 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:22,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 150 [2022-03-03 19:26:22,620 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:22,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-03-03 19:26:22,631 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:22,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-03-03 19:26:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:22,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826490417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:22,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:22,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:22,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250390907] [2022-03-03 19:26:22,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:22,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:22,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:22,699 INFO L87 Difference]: Start difference. First operand 769 states and 2258 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:27,605 INFO L93 Difference]: Finished difference Result 1483 states and 4093 transitions. [2022-03-03 19:26:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 19:26:27,605 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:26:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:27,607 INFO L225 Difference]: With dead ends: 1483 [2022-03-03 19:26:27,607 INFO L226 Difference]: Without dead ends: 1453 [2022-03-03 19:26:27,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=331, Invalid=1831, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:26:27,608 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 267 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:27,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 512 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1452 Invalid, 0 Unknown, 81 Unchecked, 0.8s Time] [2022-03-03 19:26:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-03-03 19:26:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 769. [2022-03-03 19:26:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.9401041666666665) internal successors, (2258), 768 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2258 transitions. [2022-03-03 19:26:27,619 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2258 transitions. Word has length 20 [2022-03-03 19:26:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:27,619 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 2258 transitions. [2022-03-03 19:26:27,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2258 transitions. [2022-03-03 19:26:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:27,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:27,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:26:27,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (333)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:27,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522,333 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:27,826 INFO L402 AbstractCegarLoop]: === Iteration 524 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:27,826 INFO L85 PathProgramCache]: Analyzing trace with hash 984947383, now seen corresponding path program 133 times [2022-03-03 19:26:27,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:27,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969821229] [2022-03-03 19:26:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:28,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:28,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969821229] [2022-03-03 19:26:28,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969821229] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:28,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88518065] [2022-03-03 19:26:28,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:26:28,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:28,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:28,607 INFO L229 MonitoredProcess]: Starting monitored process 334 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:26:28,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (334)] Waiting until timeout for monitored process [2022-03-03 19:26:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:26:28,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:28,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:28,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:26:29,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:29,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-03-03 19:26:29,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 165 [2022-03-03 19:26:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:31,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:32,458 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:32,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 152 [2022-03-03 19:26:32,912 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:32,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-03-03 19:26:32,916 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:32,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-03-03 19:26:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:32,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88518065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:32,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:32,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:32,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084018273] [2022-03-03 19:26:32,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:32,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:32,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:32,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:32,955 INFO L87 Difference]: Start difference. First operand 769 states and 2258 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:34,183 INFO L93 Difference]: Finished difference Result 857 states and 2523 transitions. [2022-03-03 19:26:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:26:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:26:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:34,185 INFO L225 Difference]: With dead ends: 857 [2022-03-03 19:26:34,185 INFO L226 Difference]: Without dead ends: 850 [2022-03-03 19:26:34,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:26:34,185 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:34,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 224 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 372 Invalid, 0 Unknown, 79 Unchecked, 0.2s Time] [2022-03-03 19:26:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-03-03 19:26:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 771. [2022-03-03 19:26:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 2.942857142857143) internal successors, (2266), 770 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 2266 transitions. [2022-03-03 19:26:34,193 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 2266 transitions. Word has length 20 [2022-03-03 19:26:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:34,193 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 2266 transitions. [2022-03-03 19:26:34,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 2266 transitions. [2022-03-03 19:26:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:34,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:34,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:26:34,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (334)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 334 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable523 [2022-03-03 19:26:34,407 INFO L402 AbstractCegarLoop]: === Iteration 525 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1590486915, now seen corresponding path program 134 times [2022-03-03 19:26:34,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:34,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826628294] [2022-03-03 19:26:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:35,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:35,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826628294] [2022-03-03 19:26:35,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826628294] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:35,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266912368] [2022-03-03 19:26:35,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:26:35,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:35,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:35,011 INFO L229 MonitoredProcess]: Starting monitored process 335 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:26:35,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (335)] Waiting until timeout for monitored process [2022-03-03 19:26:35,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:26:35,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:35,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 19:26:35,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:35,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:35,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:26:36,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:36,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 196 [2022-03-03 19:26:36,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 166 [2022-03-03 19:26:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:37,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:38,596 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:38,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 184 [2022-03-03 19:26:39,080 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:39,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:26:39,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:39,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-03-03 19:26:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:39,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266912368] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:39,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:39,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:39,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968539497] [2022-03-03 19:26:39,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:39,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:39,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:39,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:39,132 INFO L87 Difference]: Start difference. First operand 771 states and 2266 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:39,790 INFO L93 Difference]: Finished difference Result 860 states and 2526 transitions. [2022-03-03 19:26:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:26:39,791 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-03 19:26:39,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:39,792 INFO L225 Difference]: With dead ends: 860 [2022-03-03 19:26:39,792 INFO L226 Difference]: Without dead ends: 845 [2022-03-03 19:26:39,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:26:39,792 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:39,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 244 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 418 Invalid, 0 Unknown, 223 Unchecked, 0.2s Time] [2022-03-03 19:26:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-03-03 19:26:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 771. [2022-03-03 19:26:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 2.942857142857143) internal successors, (2266), 770 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 2266 transitions. [2022-03-03 19:26:39,801 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 2266 transitions. Word has length 20 [2022-03-03 19:26:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:39,801 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 2266 transitions. [2022-03-03 19:26:39,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 2266 transitions. [2022-03-03 19:26:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:39,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:39,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:26:39,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (335)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:40,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 335 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable524 [2022-03-03 19:26:40,015 INFO L402 AbstractCegarLoop]: === Iteration 526 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:40,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash 24806715, now seen corresponding path program 135 times [2022-03-03 19:26:40,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:40,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979957825] [2022-03-03 19:26:40,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:40,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:40,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:40,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979957825] [2022-03-03 19:26:40,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979957825] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:40,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408748109] [2022-03-03 19:26:40,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:26:40,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:40,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:40,466 INFO L229 MonitoredProcess]: Starting monitored process 336 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:26:40,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Waiting until timeout for monitored process [2022-03-03 19:26:40,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:26:40,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:40,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 19:26:40,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:40,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:40,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:26:41,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:41,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 192 [2022-03-03 19:26:41,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 164 [2022-03-03 19:26:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:42,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:43,609 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:43,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 156 [2022-03-03 19:26:44,052 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:44,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 99 [2022-03-03 19:26:44,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:44,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 85 [2022-03-03 19:26:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:44,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408748109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:44,121 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:44,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:44,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498495812] [2022-03-03 19:26:44,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:44,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:44,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:44,121 INFO L87 Difference]: Start difference. First operand 771 states and 2266 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-03 19:26:44,409 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-03-03 19:26:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:26:44,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:26:44,409 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:44,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 67 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 158 Unchecked, 0.1s Time] [2022-03-03 19:26:44,410 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-03 19:26:44,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:44,431 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:26:44,454 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:26:44,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 336 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable525 [2022-03-03 19:26:44,611 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (771states) and FLOYD_HOARE automaton (currently 6 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 95 for 7ms.. [2022-03-03 19:26:44,612 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-03 19:26:44,612 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-03 19:26:44,612 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-03 19:26:44,614 INFO L732 BasicCegarLoop]: Path program histogram: [135, 90, 90, 90, 90, 10, 6, 6, 4, 4, 1] [2022-03-03 19:26:44,616 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 19:26:44,616 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 19:26:44,617 INFO L202 PluginConnector]: Adding new model word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 07:26:44 BasicIcfg [2022-03-03 19:26:44,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 19:26:44,617 INFO L158 Benchmark]: Toolchain (without parser) took 903545.64ms. Allocated memory was 189.8MB in the beginning and 647.0MB in the end (delta: 457.2MB). Free memory was 147.9MB in the beginning and 292.7MB in the end (delta: -144.8MB). Peak memory consumption was 313.7MB. Max. memory is 8.0GB. [2022-03-03 19:26:44,617 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:26:44,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.31ms. Allocated memory is still 189.8MB. Free memory was 147.9MB in the beginning and 146.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 19:26:44,617 INFO L158 Benchmark]: Boogie Preprocessor took 18.45ms. Allocated memory is still 189.8MB. Free memory was 146.3MB in the beginning and 145.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:26:44,617 INFO L158 Benchmark]: RCFGBuilder took 241.03ms. Allocated memory is still 189.8MB. Free memory was 145.1MB in the beginning and 131.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-03 19:26:44,618 INFO L158 Benchmark]: TraceAbstraction took 903254.45ms. Allocated memory was 189.8MB in the beginning and 647.0MB in the end (delta: 457.2MB). Free memory was 131.4MB in the beginning and 292.7MB in the end (delta: -161.3MB). Peak memory consumption was 296.9MB. Max. memory is 8.0GB. [2022-03-03 19:26:44,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.31ms. Allocated memory is still 189.8MB. Free memory was 147.9MB in the beginning and 146.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.45ms. Allocated memory is still 189.8MB. Free memory was 146.3MB in the beginning and 145.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 241.03ms. Allocated memory is still 189.8MB. Free memory was 145.1MB in the beginning and 131.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 903254.45ms. Allocated memory was 189.8MB in the beginning and 647.0MB in the end (delta: 457.2MB). Free memory was 131.4MB in the beginning and 292.7MB in the end (delta: -161.3MB). Peak memory consumption was 296.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (771states) and FLOYD_HOARE automaton (currently 6 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 95 for 7ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (771states) and FLOYD_HOARE automaton (currently 6 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 95 for 7ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (771states) and FLOYD_HOARE automaton (currently 6 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 95 for 7ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (771states) and FLOYD_HOARE automaton (currently 6 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 95 for 7ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 903.2s, OverallIterations: 526, TraceHistogramMax: 1, PathProgramHistogramMax: 135, EmptinessCheckTime: 0.3s, AutomataDifference: 241.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46339 SdHoareTripleChecker+Valid, 69.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46339 mSDsluCounter, 75218 SdHoareTripleChecker+Invalid, 59.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 26047 IncrementalHoareTripleChecker+Unchecked, 136968 mSDsCounter, 4071 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160504 IncrementalHoareTripleChecker+Invalid, 190622 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4071 mSolverCounterUnsat, 9812 mSDtfsCounter, 160504 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19330 GetRequests, 9678 SyntacticMatches, 641 SemanticMatches, 9010 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 30017 ImplicationChecksByTransitivity, 294.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=776occurred in iteration=509, InterpolantAutomatonStates: 4930, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 525 MinimizatonAttempts, 91472 StatesRemovedByMinimization, 522 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 574.9s InterpolantComputationTime, 16192 NumberOfCodeBlocks, 16192 NumberOfCodeBlocksAsserted, 1110 NumberOfCheckSat, 21398 ConstructedInterpolants, 1288 QuantifiedInterpolants, 485540 SizeOfPredicates, 4576 NumberOfNonLiveVariables, 24751 ConjunctsInSsa, 5509 ConjunctsInUnsatCore, 1196 InterpolantComputations, 221 PerfectInterpolantSequences, 392/2285 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown