/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-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 19:11:44,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 19:11:44,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 19:11:44,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 19:11:44,808 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 19:11:44,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 19:11:44,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 19:11:44,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 19:11:44,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 19:11:44,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 19:11:44,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 19:11:44,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 19:11:44,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 19:11:44,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 19:11:44,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:11:44,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 19:11:44,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 19:11:44,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 19:11:44,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 19:11:45,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 19:11:45,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 19:11:45,011 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 19:11:45,012 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 19:11:45,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl [2022-03-03 19:11:45,013 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl' [2022-03-03 19:11:45,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 19:11:45,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 19:11:45,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 19:11:45,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 19:11:45,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 19:11:45,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,053 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 19:11:45,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 19:11:45,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 19:11:45,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 19:11:45,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 19:11:45,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 19:11:45,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 19:11:45,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 19:11:45,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 19:11:45,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/1) ... [2022-03-03 19:11:45,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:11:45,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:11:45,093 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 19:11:45,112 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 19:11:45,122 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 19:11:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 19:11:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 19:11:45,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 19:11:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 19:11:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 19:11:45,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 19:11:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 19:11:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 19:11:45,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-03 19:11:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 19:11:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 19:11:45,124 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 19:11:45,160 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 19:11:45,161 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 19:11:45,306 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 19:11:45,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 19:11:45,357 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 19:11:45,358 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:11:45 BoogieIcfgContainer [2022-03-03 19:11:45,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 19:11:45,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 19:11:45,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 19:11:45,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 19:11:45,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:11:45" (1/2) ... [2022-03-03 19:11:45,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8f9862 and model type word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:11:45, skipping insertion in model container [2022-03-03 19:11:45,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:11:45" (2/2) ... [2022-03-03 19:11:45,373 INFO L111 eAbstractionObserver]: Analyzing ICFG word-trans.wvr.bpl [2022-03-03 19:11:45,376 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 19:11:45,376 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 19:11:45,376 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 19:11:45,376 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 19:11:45,414 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-03 19:11:45,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 19:11:45,449 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 19:11:45,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-03 19:11:45,455 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2022-03-03 19:11:45,493 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 19:11:45,495 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 19:11:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:45,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:45,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:45,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash -175708281, now seen corresponding path program 1 times [2022-03-03 19:11:45,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:45,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593409116] [2022-03-03 19:11:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:45,689 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 19:11:45,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:45,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593409116] [2022-03-03 19:11:45,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593409116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:45,690 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:45,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:45,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156176968] [2022-03-03 19:11:45,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:45,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:45,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:45,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:45,714 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:45,892 INFO L93 Difference]: Finished difference Result 230 states and 687 transitions. [2022-03-03 19:11:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:45,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:45,903 INFO L225 Difference]: With dead ends: 230 [2022-03-03 19:11:45,904 INFO L226 Difference]: Without dead ends: 215 [2022-03-03 19:11:45,905 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 19:11:45,908 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:45,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-03-03 19:11:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 126. [2022-03-03 19:11:45,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.368) internal successors, (421), 125 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 421 transitions. [2022-03-03 19:11:45,991 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 421 transitions. Word has length 14 [2022-03-03 19:11:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:45,992 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 421 transitions. [2022-03-03 19:11:45,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 421 transitions. [2022-03-03 19:11:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:45,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:45,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:45,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 19:11:45,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash -398208309, now seen corresponding path program 2 times [2022-03-03 19:11:46,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250187487] [2022-03-03 19:11:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,143 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 19:11:46,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250187487] [2022-03-03 19:11:46,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250187487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:46,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401937566] [2022-03-03 19:11:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:46,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:46,146 INFO L87 Difference]: Start difference. First operand 126 states and 421 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,288 INFO L93 Difference]: Finished difference Result 257 states and 779 transitions. [2022-03-03 19:11:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,291 INFO L225 Difference]: With dead ends: 257 [2022-03-03 19:11:46,291 INFO L226 Difference]: Without dead ends: 242 [2022-03-03 19:11:46,291 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 19:11:46,292 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 29 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-03-03 19:11:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 132. [2022-03-03 19:11:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.312977099236641) internal successors, (434), 131 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 434 transitions. [2022-03-03 19:11:46,304 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 434 transitions. Word has length 14 [2022-03-03 19:11:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,304 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 434 transitions. [2022-03-03 19:11:46,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 434 transitions. [2022-03-03 19:11:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:46,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 19:11:46,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash 484418539, now seen corresponding path program 3 times [2022-03-03 19:11:46,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035835258] [2022-03-03 19:11:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,363 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 19:11:46,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035835258] [2022-03-03 19:11:46,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035835258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:46,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908194107] [2022-03-03 19:11:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:46,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:46,365 INFO L87 Difference]: Start difference. First operand 132 states and 434 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,453 INFO L93 Difference]: Finished difference Result 244 states and 710 transitions. [2022-03-03 19:11:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:46,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,456 INFO L225 Difference]: With dead ends: 244 [2022-03-03 19:11:46,456 INFO L226 Difference]: Without dead ends: 229 [2022-03-03 19:11:46,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:11:46,457 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 30 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-03-03 19:11:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 136. [2022-03-03 19:11:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.3333333333333335) internal successors, (450), 135 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 450 transitions. [2022-03-03 19:11:46,466 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 450 transitions. Word has length 14 [2022-03-03 19:11:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,467 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 450 transitions. [2022-03-03 19:11:46,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 450 transitions. [2022-03-03 19:11:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:46,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 19:11:46,468 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash 843948803, now seen corresponding path program 4 times [2022-03-03 19:11:46,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831707380] [2022-03-03 19:11:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,520 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 19:11:46,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831707380] [2022-03-03 19:11:46,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831707380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:46,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092953045] [2022-03-03 19:11:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:46,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:46,522 INFO L87 Difference]: Start difference. First operand 136 states and 450 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,617 INFO L93 Difference]: Finished difference Result 251 states and 743 transitions. [2022-03-03 19:11:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,619 INFO L225 Difference]: With dead ends: 251 [2022-03-03 19:11:46,619 INFO L226 Difference]: Without dead ends: 236 [2022-03-03 19:11:46,619 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 19:11:46,620 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 31 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-03 19:11:46,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 140. [2022-03-03 19:11:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.2949640287769784) internal successors, (458), 139 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 458 transitions. [2022-03-03 19:11:46,628 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 458 transitions. Word has length 14 [2022-03-03 19:11:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,628 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 458 transitions. [2022-03-03 19:11:46,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 458 transitions. [2022-03-03 19:11:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:46,629 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 19:11:46,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1643666631, now seen corresponding path program 5 times [2022-03-03 19:11:46,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431148303] [2022-03-03 19:11:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,691 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 19:11:46,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431148303] [2022-03-03 19:11:46,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431148303] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:46,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087783648] [2022-03-03 19:11:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:46,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:46,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:46,693 INFO L87 Difference]: Start difference. First operand 140 states and 458 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,796 INFO L93 Difference]: Finished difference Result 279 states and 867 transitions. [2022-03-03 19:11:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:46,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,798 INFO L225 Difference]: With dead ends: 279 [2022-03-03 19:11:46,798 INFO L226 Difference]: Without dead ends: 264 [2022-03-03 19:11:46,798 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 19:11:46,799 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-03-03 19:11:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 142. [2022-03-03 19:11:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2022-03-03 19:11:46,805 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2022-03-03 19:11:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,805 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2022-03-03 19:11:46,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2022-03-03 19:11:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:11:46,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 19:11:46,807 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1513926101, now seen corresponding path program 6 times [2022-03-03 19:11:46,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991048177] [2022-03-03 19:11:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:46,850 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 19:11:46,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:46,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991048177] [2022-03-03 19:11:46,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991048177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:46,854 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:46,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:46,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095137318] [2022-03-03 19:11:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:46,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:46,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:46,857 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:46,951 INFO L93 Difference]: Finished difference Result 270 states and 831 transitions. [2022-03-03 19:11:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:46,953 INFO L225 Difference]: With dead ends: 270 [2022-03-03 19:11:46,953 INFO L226 Difference]: Without dead ends: 255 [2022-03-03 19:11:46,953 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 19:11:46,953 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:46,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-03-03 19:11:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 142. [2022-03-03 19:11:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2022-03-03 19:11:46,959 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2022-03-03 19:11:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:46,959 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2022-03-03 19:11:46,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 19:11:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2022-03-03 19:11:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:46,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:46,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:46,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 19:11:46,960 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1121798664, now seen corresponding path program 1 times [2022-03-03 19:11:46,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:46,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761585154] [2022-03-03 19:11:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,003 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 19:11:47,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761585154] [2022-03-03 19:11:47,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761585154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769307276] [2022-03-03 19:11:47,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,005 INFO L87 Difference]: Start difference. First operand 142 states and 467 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 19:11:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,084 INFO L93 Difference]: Finished difference Result 257 states and 749 transitions. [2022-03-03 19:11:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:47,084 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 19:11:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,085 INFO L225 Difference]: With dead ends: 257 [2022-03-03 19:11:47,085 INFO L226 Difference]: Without dead ends: 224 [2022-03-03 19:11:47,085 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 19:11:47,086 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 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 19:11:47,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 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 19:11:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-03-03 19:11:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 142. [2022-03-03 19:11:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.276595744680851) internal successors, (462), 141 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 462 transitions. [2022-03-03 19:11:47,091 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 462 transitions. Word has length 15 [2022-03-03 19:11:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,091 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 462 transitions. [2022-03-03 19:11:47,091 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 19:11:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 462 transitions. [2022-03-03 19:11:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 19:11:47,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1302869542, now seen corresponding path program 1 times [2022-03-03 19:11:47,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079025563] [2022-03-03 19:11:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,136 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 19:11:47,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079025563] [2022-03-03 19:11:47,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079025563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333869859] [2022-03-03 19:11:47,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,137 INFO L87 Difference]: Start difference. First operand 142 states and 462 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 19:11:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,228 INFO L93 Difference]: Finished difference Result 280 states and 838 transitions. [2022-03-03 19:11:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:47,228 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 19:11:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,230 INFO L225 Difference]: With dead ends: 280 [2022-03-03 19:11:47,230 INFO L226 Difference]: Without dead ends: 259 [2022-03-03 19:11:47,230 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 19:11:47,230 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 30 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-03 19:11:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 147. [2022-03-03 19:11:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.287671232876712) internal successors, (480), 146 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 480 transitions. [2022-03-03 19:11:47,235 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 480 transitions. Word has length 15 [2022-03-03 19:11:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,235 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 480 transitions. [2022-03-03 19:11:47,235 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 19:11:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 480 transitions. [2022-03-03 19:11:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 19:11:47,236 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1442736794, now seen corresponding path program 2 times [2022-03-03 19:11:47,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680991548] [2022-03-03 19:11:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,274 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 19:11:47,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680991548] [2022-03-03 19:11:47,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680991548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336049698] [2022-03-03 19:11:47,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,276 INFO L87 Difference]: Start difference. First operand 147 states and 480 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 19:11:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,356 INFO L93 Difference]: Finished difference Result 278 states and 832 transitions. [2022-03-03 19:11:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:47,357 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 19:11:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,358 INFO L225 Difference]: With dead ends: 278 [2022-03-03 19:11:47,358 INFO L226 Difference]: Without dead ends: 251 [2022-03-03 19:11:47,358 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 19:11:47,359 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 31 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-03-03 19:11:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 147. [2022-03-03 19:11:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.267123287671233) internal successors, (477), 146 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 477 transitions. [2022-03-03 19:11:47,363 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 477 transitions. Word has length 15 [2022-03-03 19:11:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,364 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 477 transitions. [2022-03-03 19:11:47,364 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 19:11:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 477 transitions. [2022-03-03 19:11:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 19:11:47,364 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -229896958, now seen corresponding path program 2 times [2022-03-03 19:11:47,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105090171] [2022-03-03 19:11:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,419 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 19:11:47,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105090171] [2022-03-03 19:11:47,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105090171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,420 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112885512] [2022-03-03 19:11:47,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,421 INFO L87 Difference]: Start difference. First operand 147 states and 477 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 19:11:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,518 INFO L93 Difference]: Finished difference Result 278 states and 835 transitions. [2022-03-03 19:11:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:47,519 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 19:11:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,520 INFO L225 Difference]: With dead ends: 278 [2022-03-03 19:11:47,520 INFO L226 Difference]: Without dead ends: 256 [2022-03-03 19:11:47,520 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 19:11:47,521 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 34 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-03 19:11:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 150. [2022-03-03 19:11:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 488 transitions. [2022-03-03 19:11:47,525 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 488 transitions. Word has length 15 [2022-03-03 19:11:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,525 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 488 transitions. [2022-03-03 19:11:47,526 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 19:11:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 488 transitions. [2022-03-03 19:11:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 19:11:47,526 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,527 INFO L85 PathProgramCache]: Analyzing trace with hash 352207545, now seen corresponding path program 1 times [2022-03-03 19:11:47,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974246021] [2022-03-03 19:11:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,554 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 19:11:47,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974246021] [2022-03-03 19:11:47,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974246021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599282035] [2022-03-03 19:11:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,555 INFO L87 Difference]: Start difference. First operand 150 states and 488 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 19:11:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,635 INFO L93 Difference]: Finished difference Result 281 states and 835 transitions. [2022-03-03 19:11:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:47,635 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 19:11:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,637 INFO L225 Difference]: With dead ends: 281 [2022-03-03 19:11:47,637 INFO L226 Difference]: Without dead ends: 262 [2022-03-03 19:11:47,637 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 19:11:47,637 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 33 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-03-03 19:11:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 154. [2022-03-03 19:11:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.281045751633987) internal successors, (502), 153 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 502 transitions. [2022-03-03 19:11:47,642 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 502 transitions. Word has length 15 [2022-03-03 19:11:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,642 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 502 transitions. [2022-03-03 19:11:47,642 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 19:11:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 502 transitions. [2022-03-03 19:11:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,643 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 19:11:47,643 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 129707517, now seen corresponding path program 2 times [2022-03-03 19:11:47,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787165785] [2022-03-03 19:11:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,670 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 19:11:47,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787165785] [2022-03-03 19:11:47,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787165785] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607058122] [2022-03-03 19:11:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,672 INFO L87 Difference]: Start difference. First operand 154 states and 502 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 19:11:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,769 INFO L93 Difference]: Finished difference Result 373 states and 1108 transitions. [2022-03-03 19:11:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:11:47,770 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 19:11:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,771 INFO L225 Difference]: With dead ends: 373 [2022-03-03 19:11:47,771 INFO L226 Difference]: Without dead ends: 354 [2022-03-03 19:11:47,771 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 19:11:47,772 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 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 19:11:47,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-03 19:11:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 156. [2022-03-03 19:11:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2838709677419353) internal successors, (509), 155 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 509 transitions. [2022-03-03 19:11:47,777 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 509 transitions. Word has length 15 [2022-03-03 19:11:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,777 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 509 transitions. [2022-03-03 19:11:47,777 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 19:11:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 509 transitions. [2022-03-03 19:11:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 19:11:47,778 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2132703724, now seen corresponding path program 3 times [2022-03-03 19:11:47,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186794872] [2022-03-03 19:11:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,812 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 19:11:47,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186794872] [2022-03-03 19:11:47,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186794872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972263184] [2022-03-03 19:11:47,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,813 INFO L87 Difference]: Start difference. First operand 156 states and 509 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 19:11:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:47,890 INFO L93 Difference]: Finished difference Result 275 states and 785 transitions. [2022-03-03 19:11:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:47,891 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 19:11:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:47,892 INFO L225 Difference]: With dead ends: 275 [2022-03-03 19:11:47,892 INFO L226 Difference]: Without dead ends: 242 [2022-03-03 19:11:47,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:11:47,892 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:47,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 30 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-03-03 19:11:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 156. [2022-03-03 19:11:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2580645161290325) internal successors, (505), 155 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 505 transitions. [2022-03-03 19:11:47,897 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 505 transitions. Word has length 15 [2022-03-03 19:11:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:47,897 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 505 transitions. [2022-03-03 19:11:47,897 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 19:11:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 505 transitions. [2022-03-03 19:11:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:47,897 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:47,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 19:11:47,898 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1336190699, now seen corresponding path program 3 times [2022-03-03 19:11:47,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:47,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201115695] [2022-03-03 19:11:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:47,929 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 19:11:47,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:47,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201115695] [2022-03-03 19:11:47,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201115695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:47,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:47,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:47,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281624809] [2022-03-03 19:11:47,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:47,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:47,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:47,930 INFO L87 Difference]: Start difference. First operand 156 states and 505 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 19:11:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,012 INFO L93 Difference]: Finished difference Result 276 states and 800 transitions. [2022-03-03 19:11:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:48,012 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 19:11:48,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,013 INFO L225 Difference]: With dead ends: 276 [2022-03-03 19:11:48,013 INFO L226 Difference]: Without dead ends: 257 [2022-03-03 19:11:48,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:11:48,014 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 30 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-03-03 19:11:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 156. [2022-03-03 19:11:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2580645161290325) internal successors, (505), 155 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 505 transitions. [2022-03-03 19:11:48,018 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 505 transitions. Word has length 15 [2022-03-03 19:11:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,019 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 505 transitions. [2022-03-03 19:11:48,019 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 19:11:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 505 transitions. [2022-03-03 19:11:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,019 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-03 19:11:48,020 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1816909085, now seen corresponding path program 4 times [2022-03-03 19:11:48,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865770141] [2022-03-03 19:11:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,052 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 19:11:48,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865770141] [2022-03-03 19:11:48,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865770141] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414252576] [2022-03-03 19:11:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,054 INFO L87 Difference]: Start difference. First operand 156 states and 505 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 19:11:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,122 INFO L93 Difference]: Finished difference Result 246 states and 733 transitions. [2022-03-03 19:11:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:48,122 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 19:11:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,123 INFO L225 Difference]: With dead ends: 246 [2022-03-03 19:11:48,123 INFO L226 Difference]: Without dead ends: 223 [2022-03-03 19:11:48,123 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 19:11:48,124 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 24 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-03-03 19:11:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 156. [2022-03-03 19:11:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2451612903225806) internal successors, (503), 155 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 503 transitions. [2022-03-03 19:11:48,128 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 503 transitions. Word has length 15 [2022-03-03 19:11:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,128 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 503 transitions. [2022-03-03 19:11:48,128 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 19:11:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 503 transitions. [2022-03-03 19:11:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-03 19:11:48,129 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2004830762, now seen corresponding path program 4 times [2022-03-03 19:11:48,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368486265] [2022-03-03 19:11:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,158 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 19:11:48,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368486265] [2022-03-03 19:11:48,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368486265] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035831776] [2022-03-03 19:11:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,160 INFO L87 Difference]: Start difference. First operand 156 states and 503 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 19:11:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,245 INFO L93 Difference]: Finished difference Result 267 states and 773 transitions. [2022-03-03 19:11:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:48,245 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 19:11:48,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,246 INFO L225 Difference]: With dead ends: 267 [2022-03-03 19:11:48,246 INFO L226 Difference]: Without dead ends: 245 [2022-03-03 19:11:48,247 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 19:11:48,247 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 36 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-03-03 19:11:48,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 158. [2022-03-03 19:11:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.248407643312102) internal successors, (510), 157 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 19:11:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 510 transitions. [2022-03-03 19:11:48,252 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 510 transitions. Word has length 15 [2022-03-03 19:11:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,252 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 510 transitions. [2022-03-03 19:11:48,252 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 19:11:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 510 transitions. [2022-03-03 19:11:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-03 19:11:48,253 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash -377237420, now seen corresponding path program 3 times [2022-03-03 19:11:48,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545881976] [2022-03-03 19:11:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,279 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 19:11:48,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545881976] [2022-03-03 19:11:48,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545881976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848540453] [2022-03-03 19:11:48,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,280 INFO L87 Difference]: Start difference. First operand 158 states and 510 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 19:11:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,356 INFO L93 Difference]: Finished difference Result 285 states and 834 transitions. [2022-03-03 19:11:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:48,357 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 19:11:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,358 INFO L225 Difference]: With dead ends: 285 [2022-03-03 19:11:48,358 INFO L226 Difference]: Without dead ends: 264 [2022-03-03 19:11:48,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:11:48,359 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 34 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-03-03 19:11:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 158. [2022-03-03 19:11:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.248407643312102) internal successors, (510), 157 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 19:11:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 510 transitions. [2022-03-03 19:11:48,363 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 510 transitions. Word has length 15 [2022-03-03 19:11:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,363 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 510 transitions. [2022-03-03 19:11:48,363 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 19:11:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 510 transitions. [2022-03-03 19:11:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-03 19:11:48,364 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash 48205174, now seen corresponding path program 4 times [2022-03-03 19:11:48,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704386173] [2022-03-03 19:11:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,388 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 19:11:48,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704386173] [2022-03-03 19:11:48,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704386173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117188270] [2022-03-03 19:11:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,389 INFO L87 Difference]: Start difference. First operand 158 states and 510 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 19:11:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,484 INFO L93 Difference]: Finished difference Result 329 states and 972 transitions. [2022-03-03 19:11:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:11:48,484 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 19:11:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,485 INFO L225 Difference]: With dead ends: 329 [2022-03-03 19:11:48,485 INFO L226 Difference]: Without dead ends: 308 [2022-03-03 19:11:48,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:11:48,486 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-03 19:11:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 160. [2022-03-03 19:11:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.251572327044025) internal successors, (517), 159 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 517 transitions. [2022-03-03 19:11:48,491 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 517 transitions. Word has length 15 [2022-03-03 19:11:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,491 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 517 transitions. [2022-03-03 19:11:48,491 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 19:11:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 517 transitions. [2022-03-03 19:11:48,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-03 19:11:48,492 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash 316350494, now seen corresponding path program 5 times [2022-03-03 19:11:48,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444153995] [2022-03-03 19:11:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,528 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 19:11:48,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444153995] [2022-03-03 19:11:48,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444153995] 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 [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881042895] [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 5 states [2022-03-03 19:11:48,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,530 INFO L87 Difference]: Start difference. First operand 160 states and 517 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 19:11:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,614 INFO L93 Difference]: Finished difference Result 312 states and 950 transitions. [2022-03-03 19:11:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:48,614 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 19:11:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,615 INFO L225 Difference]: With dead ends: 312 [2022-03-03 19:11:48,615 INFO L226 Difference]: Without dead ends: 285 [2022-03-03 19:11:48,616 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 19:11:48,616 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-03-03 19:11:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 160. [2022-03-03 19:11:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2022-03-03 19:11:48,621 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2022-03-03 19:11:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,621 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2022-03-03 19:11:48,621 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 19:11:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2022-03-03 19:11:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,621 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-03 19:11:48,622 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -99509597, now seen corresponding path program 5 times [2022-03-03 19:11:48,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965608267] [2022-03-03 19:11:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,649 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 19:11:48,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965608267] [2022-03-03 19:11:48,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965608267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047311320] [2022-03-03 19:11:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,651 INFO L87 Difference]: Start difference. First operand 160 states and 515 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 19:11:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,749 INFO L93 Difference]: Finished difference Result 373 states and 1130 transitions. [2022-03-03 19:11:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:11:48,750 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 19:11:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,751 INFO L225 Difference]: With dead ends: 373 [2022-03-03 19:11:48,751 INFO L226 Difference]: Without dead ends: 354 [2022-03-03 19:11:48,751 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 19:11:48,752 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 40 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-03 19:11:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 160. [2022-03-03 19:11:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2022-03-03 19:11:48,757 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2022-03-03 19:11:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,757 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2022-03-03 19:11:48,757 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 19:11:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2022-03-03 19:11:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-03 19:11:48,758 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash 952554009, now seen corresponding path program 6 times [2022-03-03 19:11:48,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718318696] [2022-03-03 19:11:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,789 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 19:11:48,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718318696] [2022-03-03 19:11:48,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718318696] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685889843] [2022-03-03 19:11:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,790 INFO L87 Difference]: Start difference. First operand 160 states and 515 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 19:11:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:48,860 INFO L93 Difference]: Finished difference Result 274 states and 848 transitions. [2022-03-03 19:11:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:48,861 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 19:11:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:48,862 INFO L225 Difference]: With dead ends: 274 [2022-03-03 19:11:48,862 INFO L226 Difference]: Without dead ends: 251 [2022-03-03 19:11:48,862 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 19:11:48,862 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:48,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-03-03 19:11:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2022-03-03 19:11:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-03-03 19:11:48,867 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-03-03 19:11:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:48,867 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-03-03 19:11:48,867 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 19:11:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-03-03 19:11:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:48,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:48,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:48,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-03 19:11:48,868 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 131206424, now seen corresponding path program 6 times [2022-03-03 19:11:48,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:48,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971814639] [2022-03-03 19:11:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:48,895 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 19:11:48,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:48,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971814639] [2022-03-03 19:11:48,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971814639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:48,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:48,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:48,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773150628] [2022-03-03 19:11:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:48,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:48,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:48,897 INFO L87 Difference]: Start difference. First operand 160 states and 513 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 19:11:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,001 INFO L93 Difference]: Finished difference Result 380 states and 1149 transitions. [2022-03-03 19:11:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:11:49,001 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 19:11:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,002 INFO L225 Difference]: With dead ends: 380 [2022-03-03 19:11:49,003 INFO L226 Difference]: Without dead ends: 359 [2022-03-03 19:11:49,003 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 19:11:49,003 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 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 19:11:49,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-03 19:11:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 160. [2022-03-03 19:11:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-03-03 19:11:49,010 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-03-03 19:11:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,010 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-03-03 19:11:49,010 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 19:11:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-03-03 19:11:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:49,011 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-03 19:11:49,011 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash -303614762, now seen corresponding path program 5 times [2022-03-03 19:11:49,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44896198] [2022-03-03 19:11:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,037 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 19:11:49,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44896198] [2022-03-03 19:11:49,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44896198] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:49,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874198464] [2022-03-03 19:11:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:49,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:49,039 INFO L87 Difference]: Start difference. First operand 160 states and 513 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 19:11:49,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,115 INFO L93 Difference]: Finished difference Result 272 states and 793 transitions. [2022-03-03 19:11:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,115 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 19:11:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,116 INFO L225 Difference]: With dead ends: 272 [2022-03-03 19:11:49,116 INFO L226 Difference]: Without dead ends: 250 [2022-03-03 19:11:49,116 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 19:11:49,117 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 34 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-03-03 19:11:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 160. [2022-03-03 19:11:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-03-03 19:11:49,121 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-03-03 19:11:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,121 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-03-03 19:11:49,121 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 19:11:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-03-03 19:11:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 19:11:49,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-03 19:11:49,122 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,122 INFO L85 PathProgramCache]: Analyzing trace with hash 833759802, now seen corresponding path program 6 times [2022-03-03 19:11:49,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106372735] [2022-03-03 19:11:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,147 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 19:11:49,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106372735] [2022-03-03 19:11:49,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106372735] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:49,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812518159] [2022-03-03 19:11:49,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:49,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:49,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:49,149 INFO L87 Difference]: Start difference. First operand 160 states and 513 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 19:11:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,224 INFO L93 Difference]: Finished difference Result 263 states and 757 transitions. [2022-03-03 19:11:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,225 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 19:11:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,226 INFO L225 Difference]: With dead ends: 263 [2022-03-03 19:11:49,226 INFO L226 Difference]: Without dead ends: 241 [2022-03-03 19:11:49,226 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 19:11:49,226 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 37 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-03-03 19:11:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 160. [2022-03-03 19:11:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-03-03 19:11:49,231 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-03-03 19:11:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,231 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-03-03 19:11:49,231 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 19:11:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-03-03 19:11:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-03 19:11:49,232 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1704059387, now seen corresponding path program 1 times [2022-03-03 19:11:49,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246955832] [2022-03-03 19:11:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,246 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 19:11:49,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246955832] [2022-03-03 19:11:49,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246955832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770808150] [2022-03-03 19:11:49,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,247 INFO L87 Difference]: Start difference. First operand 160 states and 513 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 19:11:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,297 INFO L93 Difference]: Finished difference Result 304 states and 846 transitions. [2022-03-03 19:11:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,297 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 19:11:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,298 INFO L225 Difference]: With dead ends: 304 [2022-03-03 19:11:49,298 INFO L226 Difference]: Without dead ends: 282 [2022-03-03 19:11:49,299 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 19:11:49,299 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-03-03 19:11:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 160. [2022-03-03 19:11:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.1823899371069184) internal successors, (506), 159 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 506 transitions. [2022-03-03 19:11:49,303 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 506 transitions. Word has length 16 [2022-03-03 19:11:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,303 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 506 transitions. [2022-03-03 19:11:49,303 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 19:11:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 506 transitions. [2022-03-03 19:11:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,304 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-03 19:11:49,304 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1929545917, now seen corresponding path program 2 times [2022-03-03 19:11:49,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716428001] [2022-03-03 19:11:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,316 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 19:11:49,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716428001] [2022-03-03 19:11:49,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716428001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147149596] [2022-03-03 19:11:49,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,317 INFO L87 Difference]: Start difference. First operand 160 states and 506 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 19:11:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,365 INFO L93 Difference]: Finished difference Result 298 states and 826 transitions. [2022-03-03 19:11:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,365 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 19:11:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,366 INFO L225 Difference]: With dead ends: 298 [2022-03-03 19:11:49,366 INFO L226 Difference]: Without dead ends: 276 [2022-03-03 19:11:49,366 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 19:11:49,367 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-03-03 19:11:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 153. [2022-03-03 19:11:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 3.223684210526316) internal successors, (490), 152 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 490 transitions. [2022-03-03 19:11:49,371 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 490 transitions. Word has length 16 [2022-03-03 19:11:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,371 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 490 transitions. [2022-03-03 19:11:49,371 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 19:11:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 490 transitions. [2022-03-03 19:11:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-03 19:11:49,372 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1936277242, now seen corresponding path program 1 times [2022-03-03 19:11:49,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503546840] [2022-03-03 19:11:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,383 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 19:11:49,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503546840] [2022-03-03 19:11:49,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503546840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210226746] [2022-03-03 19:11:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,385 INFO L87 Difference]: Start difference. First operand 153 states and 490 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 19:11:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,427 INFO L93 Difference]: Finished difference Result 260 states and 732 transitions. [2022-03-03 19:11:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,427 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 19:11:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,428 INFO L225 Difference]: With dead ends: 260 [2022-03-03 19:11:49,428 INFO L226 Difference]: Without dead ends: 235 [2022-03-03 19:11:49,428 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 19:11:49,429 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 21 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-03 19:11:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 149. [2022-03-03 19:11:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 3.1621621621621623) internal successors, (468), 148 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 468 transitions. [2022-03-03 19:11:49,432 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 468 transitions. Word has length 16 [2022-03-03 19:11:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,433 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 468 transitions. [2022-03-03 19:11:49,433 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 19:11:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 468 transitions. [2022-03-03 19:11:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-03 19:11:49,433 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2117348120, now seen corresponding path program 1 times [2022-03-03 19:11:49,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37327859] [2022-03-03 19:11:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,445 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 19:11:49,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37327859] [2022-03-03 19:11:49,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37327859] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762752607] [2022-03-03 19:11:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,447 INFO L87 Difference]: Start difference. First operand 149 states and 468 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 19:11:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,491 INFO L93 Difference]: Finished difference Result 257 states and 726 transitions. [2022-03-03 19:11:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,492 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 19:11:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,493 INFO L225 Difference]: With dead ends: 257 [2022-03-03 19:11:49,493 INFO L226 Difference]: Without dead ends: 257 [2022-03-03 19:11:49,493 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 19:11:49,493 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 25 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-03-03 19:11:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 143. [2022-03-03 19:11:49,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.147887323943662) internal successors, (447), 142 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 447 transitions. [2022-03-03 19:11:49,497 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 447 transitions. Word has length 16 [2022-03-03 19:11:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,497 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 447 transitions. [2022-03-03 19:11:49,497 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 19:11:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 447 transitions. [2022-03-03 19:11:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-03 19:11:49,504 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1557952042, now seen corresponding path program 2 times [2022-03-03 19:11:49,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830210726] [2022-03-03 19:11:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,529 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 19:11:49,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830210726] [2022-03-03 19:11:49,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830210726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:11:49,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523895472] [2022-03-03 19:11:49,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:11:49,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:11:49,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:11:49,531 INFO L87 Difference]: Start difference. First operand 143 states and 447 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 19:11:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,588 INFO L93 Difference]: Finished difference Result 222 states and 635 transitions. [2022-03-03 19:11:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 19:11:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,589 INFO L225 Difference]: With dead ends: 222 [2022-03-03 19:11:49,589 INFO L226 Difference]: Without dead ends: 175 [2022-03-03 19:11:49,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:11:49,590 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 25 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-03-03 19:11:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2022-03-03 19:11:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.1666666666666665) internal successors, (437), 138 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 437 transitions. [2022-03-03 19:11:49,593 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 437 transitions. Word has length 16 [2022-03-03 19:11:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,593 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 437 transitions. [2022-03-03 19:11:49,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 19:11:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 437 transitions. [2022-03-03 19:11:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-03 19:11:49,594 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1220732619, now seen corresponding path program 3 times [2022-03-03 19:11:49,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577419018] [2022-03-03 19:11:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,606 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 19:11:49,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577419018] [2022-03-03 19:11:49,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577419018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323360797] [2022-03-03 19:11:49,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,607 INFO L87 Difference]: Start difference. First operand 139 states and 437 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 19:11:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,645 INFO L93 Difference]: Finished difference Result 236 states and 663 transitions. [2022-03-03 19:11:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:11:49,646 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 19:11:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,647 INFO L225 Difference]: With dead ends: 236 [2022-03-03 19:11:49,647 INFO L226 Difference]: Without dead ends: 214 [2022-03-03 19:11:49,647 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 19:11:49,648 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 19 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-03-03 19:11:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 139. [2022-03-03 19:11:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.101449275362319) internal successors, (428), 138 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 428 transitions. [2022-03-03 19:11:49,651 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 428 transitions. Word has length 16 [2022-03-03 19:11:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,652 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 428 transitions. [2022-03-03 19:11:49,652 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 19:11:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 428 transitions. [2022-03-03 19:11:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-03 19:11:49,652 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1404034676, now seen corresponding path program 2 times [2022-03-03 19:11:49,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680016033] [2022-03-03 19:11:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,665 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 19:11:49,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680016033] [2022-03-03 19:11:49,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680016033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134114404] [2022-03-03 19:11:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,666 INFO L87 Difference]: Start difference. First operand 139 states and 428 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 19:11:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,704 INFO L93 Difference]: Finished difference Result 157 states and 457 transitions. [2022-03-03 19:11:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:11:49,704 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 19:11:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,705 INFO L225 Difference]: With dead ends: 157 [2022-03-03 19:11:49,705 INFO L226 Difference]: Without dead ends: 157 [2022-03-03 19:11:49,705 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 19:11:49,705 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-03-03 19:11:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 108. [2022-03-03 19:11:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9345794392523366) internal successors, (314), 107 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:11:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 314 transitions. [2022-03-03 19:11:49,708 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 314 transitions. Word has length 16 [2022-03-03 19:11:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,708 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 314 transitions. [2022-03-03 19:11:49,708 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 19:11:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 314 transitions. [2022-03-03 19:11:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:11:49,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:11:49,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-03 19:11:49,709 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 80169455, now seen corresponding path program 4 times [2022-03-03 19:11:49,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975596137] [2022-03-03 19:11:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,721 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 19:11:49,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975596137] [2022-03-03 19:11:49,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975596137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:11:49,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740364700] [2022-03-03 19:11:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:11:49,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:11:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:11:49,722 INFO L87 Difference]: Start difference. First operand 108 states and 314 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 19:11:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,752 INFO L93 Difference]: Finished difference Result 123 states and 338 transitions. [2022-03-03 19:11:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:11:49,753 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 19:11:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,753 INFO L225 Difference]: With dead ends: 123 [2022-03-03 19:11:49,753 INFO L226 Difference]: Without dead ends: 108 [2022-03-03 19:11:49,753 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 19:11:49,754 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:11:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-03 19:11:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-03 19:11:49,756 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 19:11:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2022-03-03 19:11:49,756 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2022-03-03 19:11:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,757 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2022-03-03 19:11:49,757 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 19:11:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2022-03-03 19:11:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:49,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,757 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 19:11:49,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-03 19:11:49,757 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1183091529, now seen corresponding path program 1 times [2022-03-03 19:11:49,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537644763] [2022-03-03 19:11:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,795 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 19:11:49,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537644763] [2022-03-03 19:11:49,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537644763] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:49,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195349801] [2022-03-03 19:11:49,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:49,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:49,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:49,797 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 19:11:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:49,913 INFO L93 Difference]: Finished difference Result 265 states and 721 transitions. [2022-03-03 19:11:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:49,913 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 19:11:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:49,914 INFO L225 Difference]: With dead ends: 265 [2022-03-03 19:11:49,914 INFO L226 Difference]: Without dead ends: 250 [2022-03-03 19:11:49,914 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 19:11:49,915 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:49,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 59 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-03-03 19:11:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 141. [2022-03-03 19:11:49,917 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 19:11:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 391 transitions. [2022-03-03 19:11:49,918 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 391 transitions. Word has length 17 [2022-03-03 19:11:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:49,918 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 391 transitions. [2022-03-03 19:11:49,918 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 19:11:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 391 transitions. [2022-03-03 19:11:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:49,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:49,918 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 19:11:49,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-03 19:11:49,918 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:49,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 922093723, now seen corresponding path program 2 times [2022-03-03 19:11:49,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:49,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461679037] [2022-03-03 19:11:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:49,965 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 19:11:49,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:49,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461679037] [2022-03-03 19:11:49,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461679037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:49,965 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:49,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:49,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452163466] [2022-03-03 19:11:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:49,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:49,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:49,966 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 19:11:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,086 INFO L93 Difference]: Finished difference Result 298 states and 795 transitions. [2022-03-03 19:11:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,086 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 19:11:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,087 INFO L225 Difference]: With dead ends: 298 [2022-03-03 19:11:50,087 INFO L226 Difference]: Without dead ends: 283 [2022-03-03 19:11:50,087 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 19:11:50,087 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 81 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 65 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-03 19:11:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 150. [2022-03-03 19:11:50,090 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 19:11:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-03-03 19:11:50,091 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-03-03 19:11:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,091 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-03-03 19:11:50,091 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 19:11:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-03-03 19:11:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,091 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 19:11:50,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-03 19:11:50,092 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash 944690271, now seen corresponding path program 3 times [2022-03-03 19:11:50,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731640837] [2022-03-03 19:11:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,137 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 19:11:50,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731640837] [2022-03-03 19:11:50,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731640837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983926598] [2022-03-03 19:11:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,138 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 19:11:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,252 INFO L93 Difference]: Finished difference Result 281 states and 763 transitions. [2022-03-03 19:11:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,252 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 19:11:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,253 INFO L225 Difference]: With dead ends: 281 [2022-03-03 19:11:50,253 INFO L226 Difference]: Without dead ends: 266 [2022-03-03 19:11:50,253 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 19:11:50,254 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 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 19:11:50,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 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 19:11:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-03 19:11:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 150. [2022-03-03 19:11:50,256 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 19:11:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-03-03 19:11:50,257 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-03-03 19:11:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,257 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-03-03 19:11:50,257 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 19:11:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-03-03 19:11:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,257 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 19:11:50,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-03 19:11:50,258 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1408578059, now seen corresponding path program 4 times [2022-03-03 19:11:50,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608323089] [2022-03-03 19:11:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,300 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 19:11:50,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608323089] [2022-03-03 19:11:50,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608323089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595597668] [2022-03-03 19:11:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,301 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 19:11:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,425 INFO L93 Difference]: Finished difference Result 289 states and 784 transitions. [2022-03-03 19:11:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,425 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 19:11:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,426 INFO L225 Difference]: With dead ends: 289 [2022-03-03 19:11:50,426 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 19:11:50,426 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 19:11:50,427 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 67 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 19:11:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 159. [2022-03-03 19:11:50,429 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 19:11:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-03-03 19:11:50,430 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-03-03 19:11:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,430 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-03-03 19:11:50,430 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 19:11:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-03-03 19:11:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,430 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 19:11:50,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-03 19:11:50,431 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash 386863921, now seen corresponding path program 5 times [2022-03-03 19:11:50,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369693589] [2022-03-03 19:11:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,476 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 19:11:50,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369693589] [2022-03-03 19:11:50,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369693589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268082662] [2022-03-03 19:11:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,477 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 19:11:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,601 INFO L93 Difference]: Finished difference Result 322 states and 859 transitions. [2022-03-03 19:11:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,601 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 19:11:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,602 INFO L225 Difference]: With dead ends: 322 [2022-03-03 19:11:50,602 INFO L226 Difference]: Without dead ends: 307 [2022-03-03 19:11:50,602 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 19:11:50,603 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 70 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 19:11:50,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 70 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-03-03 19:11:50,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 162. [2022-03-03 19:11:50,606 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 19:11:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2022-03-03 19:11:50,606 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2022-03-03 19:11:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,606 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2022-03-03 19:11:50,606 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 19:11:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2022-03-03 19:11:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,607 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 19:11:50,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-03 19:11:50,607 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash 409460469, now seen corresponding path program 6 times [2022-03-03 19:11:50,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236216508] [2022-03-03 19:11:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,653 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 19:11:50,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236216508] [2022-03-03 19:11:50,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236216508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,654 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365906355] [2022-03-03 19:11:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,656 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 19:11:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,779 INFO L93 Difference]: Finished difference Result 299 states and 814 transitions. [2022-03-03 19:11:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,779 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 19:11:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,780 INFO L225 Difference]: With dead ends: 299 [2022-03-03 19:11:50,780 INFO L226 Difference]: Without dead ends: 284 [2022-03-03 19:11:50,780 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 19:11:50,781 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 66 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-03 19:11:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 159. [2022-03-03 19:11:50,784 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 19:11:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-03-03 19:11:50,784 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-03-03 19:11:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:50,784 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-03-03 19:11:50,784 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 19:11:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-03-03 19:11:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,785 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,785 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 19:11:50,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-03 19:11:50,785 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash 868897657, now seen corresponding path program 7 times [2022-03-03 19:11:50,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:50,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008162637] [2022-03-03 19:11:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:50,837 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 19:11:50,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:50,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008162637] [2022-03-03 19:11:50,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008162637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:50,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:50,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:50,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770326528] [2022-03-03 19:11:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:50,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:50,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:50,838 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 19:11:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:50,980 INFO L93 Difference]: Finished difference Result 389 states and 1040 transitions. [2022-03-03 19:11:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:50,981 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 19:11:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:50,982 INFO L225 Difference]: With dead ends: 389 [2022-03-03 19:11:50,982 INFO L226 Difference]: Without dead ends: 374 [2022-03-03 19:11:50,982 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 19:11:50,983 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:50,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 76 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-03 19:11:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 166. [2022-03-03 19:11:50,986 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 19:11:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 470 transitions. [2022-03-03 19:11:50,987 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 470 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 166 states and 470 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 166 states and 470 transitions. [2022-03-03 19:11:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:50,988 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:50,988 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 19:11:50,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-03 19:11:50,988 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1320884387, now seen corresponding path program 8 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 [1908684031] [2022-03-03 19:11:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:50,989 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 19:11:51,042 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 19:11:51,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908684031] [2022-03-03 19:11:51,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908684031] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,043 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58299030] [2022-03-03 19:11:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,044 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 19:11:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,176 INFO L93 Difference]: Finished difference Result 398 states and 1066 transitions. [2022-03-03 19:11:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,177 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 19:11:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,178 INFO L225 Difference]: With dead ends: 398 [2022-03-03 19:11:51,178 INFO L226 Difference]: Without dead ends: 383 [2022-03-03 19:11:51,178 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 19:11:51,178 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 69 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 19:11:51,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 69 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-03 19:11:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 169. [2022-03-03 19:11:51,182 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 19:11:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 484 transitions. [2022-03-03 19:11:51,182 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 484 transitions. Word has length 17 [2022-03-03 19:11:51,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,182 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 484 transitions. [2022-03-03 19:11:51,182 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 19:11:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 484 transitions. [2022-03-03 19:11:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,183 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 19:11:51,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-03 19:11:51,183 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1298287839, now seen corresponding path program 9 times [2022-03-03 19:11:51,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851268261] [2022-03-03 19:11:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,229 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 19:11:51,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851268261] [2022-03-03 19:11:51,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851268261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,229 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012191131] [2022-03-03 19:11:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,230 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 19:11:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,353 INFO L93 Difference]: Finished difference Result 405 states and 1082 transitions. [2022-03-03 19:11:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,354 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 19:11:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,355 INFO L225 Difference]: With dead ends: 405 [2022-03-03 19:11:51,355 INFO L226 Difference]: Without dead ends: 390 [2022-03-03 19:11:51,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:51,356 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 75 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-03 19:11:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 161. [2022-03-03 19:11:51,359 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 19:11:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 452 transitions. [2022-03-03 19:11:51,359 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 452 transitions. Word has length 17 [2022-03-03 19:11:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,360 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 452 transitions. [2022-03-03 19:11:51,360 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 19:11:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 452 transitions. [2022-03-03 19:11:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,360 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,360 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 19:11:51,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-03 19:11:51,360 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1429044949, now seen corresponding path program 10 times [2022-03-03 19:11:51,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329631840] [2022-03-03 19:11:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,400 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 19:11:51,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329631840] [2022-03-03 19:11:51,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329631840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685419072] [2022-03-03 19:11:51,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,402 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 19:11:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,512 INFO L93 Difference]: Finished difference Result 340 states and 918 transitions. [2022-03-03 19:11:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,512 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 19:11:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,513 INFO L225 Difference]: With dead ends: 340 [2022-03-03 19:11:51,513 INFO L226 Difference]: Without dead ends: 325 [2022-03-03 19:11:51,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:51,514 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 66 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-03 19:11:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 165. [2022-03-03 19:11:51,517 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 19:11:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 466 transitions. [2022-03-03 19:11:51,517 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 466 transitions. Word has length 17 [2022-03-03 19:11:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,518 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 466 transitions. [2022-03-03 19:11:51,518 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 19:11:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 466 transitions. [2022-03-03 19:11:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,518 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 19:11:51,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-03 19:11:51,518 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1020348439, now seen corresponding path program 11 times [2022-03-03 19:11:51,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796329881] [2022-03-03 19:11:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,564 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 19:11:51,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796329881] [2022-03-03 19:11:51,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796329881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515453554] [2022-03-03 19:11:51,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,565 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 19:11:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,675 INFO L93 Difference]: Finished difference Result 335 states and 909 transitions. [2022-03-03 19:11:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,675 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 19:11:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,677 INFO L225 Difference]: With dead ends: 335 [2022-03-03 19:11:51,677 INFO L226 Difference]: Without dead ends: 320 [2022-03-03 19:11:51,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:51,677 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 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 19:11:51,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 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 19:11:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-03-03 19:11:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 171. [2022-03-03 19:11:51,682 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 19:11:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-03-03 19:11:51,682 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-03-03 19:11:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,682 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-03-03 19:11:51,682 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 19:11:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-03-03 19:11:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,683 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,683 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 19:11:51,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-03 19:11:51,683 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1984237037, now seen corresponding path program 12 times [2022-03-03 19:11:51,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464352591] [2022-03-03 19:11:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,744 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 19:11:51,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464352591] [2022-03-03 19:11:51,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464352591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,745 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790184628] [2022-03-03 19:11:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,746 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 19:11:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:51,879 INFO L93 Difference]: Finished difference Result 318 states and 879 transitions. [2022-03-03 19:11:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:51,879 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 19:11:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:51,880 INFO L225 Difference]: With dead ends: 318 [2022-03-03 19:11:51,880 INFO L226 Difference]: Without dead ends: 303 [2022-03-03 19:11:51,881 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 19:11:51,881 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:51,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 63 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-03 19:11:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 171. [2022-03-03 19:11:51,885 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 19:11:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-03-03 19:11:51,885 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-03-03 19:11:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:51,886 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-03-03 19:11:51,886 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 19:11:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-03-03 19:11:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:51,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:51,886 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 19:11:51,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-03 19:11:51,887 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1369703401, now seen corresponding path program 13 times [2022-03-03 19:11:51,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:51,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005558284] [2022-03-03 19:11:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:51,944 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 19:11:51,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:51,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005558284] [2022-03-03 19:11:51,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005558284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:51,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:51,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:51,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990356378] [2022-03-03 19:11:51,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:51,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:51,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:51,945 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 19:11:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,050 INFO L93 Difference]: Finished difference Result 385 states and 1046 transitions. [2022-03-03 19:11:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,051 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 19:11:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,052 INFO L225 Difference]: With dead ends: 385 [2022-03-03 19:11:52,052 INFO L226 Difference]: Without dead ends: 370 [2022-03-03 19:11:52,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:52,052 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 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 19:11:52,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 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 19:11:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-03 19:11:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 174. [2022-03-03 19:11:52,056 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 19:11:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:52,056 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,056 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:52,056 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 19:11:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,057 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 19:11:52,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-03 19:11:52,057 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 615247419, now seen corresponding path program 14 times [2022-03-03 19:11:52,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767757788] [2022-03-03 19:11:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,103 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 19:11:52,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767757788] [2022-03-03 19:11:52,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767757788] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566911512] [2022-03-03 19:11:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,104 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 19:11:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,214 INFO L93 Difference]: Finished difference Result 383 states and 1039 transitions. [2022-03-03 19:11:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,214 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 19:11:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,215 INFO L225 Difference]: With dead ends: 383 [2022-03-03 19:11:52,215 INFO L226 Difference]: Without dead ends: 368 [2022-03-03 19:11:52,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:52,216 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 67 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 19:11:52,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 67 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-03 19:11:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 174. [2022-03-03 19:11:52,219 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 19:11:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:52,219 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,219 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:52,219 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 19:11:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,220 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,220 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 19:11:52,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-03 19:11:52,220 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1736644371, now seen corresponding path program 15 times [2022-03-03 19:11:52,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438386603] [2022-03-03 19:11:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,283 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 19:11:52,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438386603] [2022-03-03 19:11:52,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438386603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,283 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174027287] [2022-03-03 19:11:52,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,284 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 19:11:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,460 INFO L93 Difference]: Finished difference Result 392 states and 1055 transitions. [2022-03-03 19:11:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,461 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 19:11:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,462 INFO L225 Difference]: With dead ends: 392 [2022-03-03 19:11:52,462 INFO L226 Difference]: Without dead ends: 377 [2022-03-03 19:11:52,462 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 19:11:52,463 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 92 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:52,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 72 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-03 19:11:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 177. [2022-03-03 19:11:52,466 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 19:11:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2022-03-03 19:11:52,466 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 17 [2022-03-03 19:11:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2022-03-03 19:11:52,466 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 19:11:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2022-03-03 19:11:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,467 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 19:11:52,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-03 19:11:52,467 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash 776503703, now seen corresponding path program 16 times [2022-03-03 19:11:52,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131438001] [2022-03-03 19:11:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,532 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 19:11:52,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131438001] [2022-03-03 19:11:52,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131438001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192633046] [2022-03-03 19:11:52,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,533 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 19:11:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,690 INFO L93 Difference]: Finished difference Result 376 states and 1032 transitions. [2022-03-03 19:11:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,691 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 19:11:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,692 INFO L225 Difference]: With dead ends: 376 [2022-03-03 19:11:52,692 INFO L226 Difference]: Without dead ends: 361 [2022-03-03 19:11:52,692 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 19:11:52,693 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:52,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 71 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-03-03 19:11:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 174. [2022-03-03 19:11:52,696 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 19:11:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:52,696 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,696 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:52,696 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 19:11:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,697 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,697 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 19:11:52,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-03 19:11:52,697 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -520856585, now seen corresponding path program 17 times [2022-03-03 19:11:52,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34036775] [2022-03-03 19:11:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,752 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 19:11:52,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34036775] [2022-03-03 19:11:52,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34036775] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,752 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295432409] [2022-03-03 19:11:52,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,753 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 19:11:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:52,864 INFO L93 Difference]: Finished difference Result 364 states and 991 transitions. [2022-03-03 19:11:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:52,864 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 19:11:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:52,865 INFO L225 Difference]: With dead ends: 364 [2022-03-03 19:11:52,866 INFO L226 Difference]: Without dead ends: 349 [2022-03-03 19:11:52,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:52,866 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 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 19:11:52,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 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 19:11:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-03-03 19:11:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 176. [2022-03-03 19:11:52,869 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 19:11:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 507 transitions. [2022-03-03 19:11:52,870 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 507 transitions. Word has length 17 [2022-03-03 19:11:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:52,870 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 507 transitions. [2022-03-03 19:11:52,870 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 19:11:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 507 transitions. [2022-03-03 19:11:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:52,870 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:52,870 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 19:11:52,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-03 19:11:52,870 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash 826274171, now seen corresponding path program 18 times [2022-03-03 19:11:52,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:52,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186131650] [2022-03-03 19:11:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:52,919 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 19:11:52,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:52,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186131650] [2022-03-03 19:11:52,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186131650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:52,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:52,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:52,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981160360] [2022-03-03 19:11:52,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:52,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:52,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:52,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:52,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:52,920 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 19:11:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,039 INFO L93 Difference]: Finished difference Result 343 states and 953 transitions. [2022-03-03 19:11:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,039 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 19:11:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,041 INFO L225 Difference]: With dead ends: 343 [2022-03-03 19:11:53,041 INFO L226 Difference]: Without dead ends: 328 [2022-03-03 19:11:53,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:53,042 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 60 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 72 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-03 19:11:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 174. [2022-03-03 19:11:53,045 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 19:11:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-03-03 19:11:53,047 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-03-03 19:11:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,048 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-03-03 19:11:53,048 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 19:11:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-03-03 19:11:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,048 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,048 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 19:11:53,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-03 19:11:53,048 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1248454179, now seen corresponding path program 19 times [2022-03-03 19:11:53,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043492811] [2022-03-03 19:11:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,082 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 19:11:53,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043492811] [2022-03-03 19:11:53,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043492811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572901232] [2022-03-03 19:11:53,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,083 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 19:11:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,195 INFO L93 Difference]: Finished difference Result 360 states and 983 transitions. [2022-03-03 19:11:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,196 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 19:11:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,197 INFO L225 Difference]: With dead ends: 360 [2022-03-03 19:11:53,197 INFO L226 Difference]: Without dead ends: 345 [2022-03-03 19:11:53,198 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 19:11:53,199 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 66 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-03-03 19:11:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 177. [2022-03-03 19:11:53,203 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 19:11:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:53,203 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,203 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:53,203 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 19:11:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,204 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 19:11:53,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-03 19:11:53,205 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1971453827, now seen corresponding path program 20 times [2022-03-03 19:11:53,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898927617] [2022-03-03 19:11:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,243 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 19:11:53,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898927617] [2022-03-03 19:11:53,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898927617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158212083] [2022-03-03 19:11:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,245 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 19:11:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,375 INFO L93 Difference]: Finished difference Result 377 states and 1017 transitions. [2022-03-03 19:11:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,375 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 19:11:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,376 INFO L225 Difference]: With dead ends: 377 [2022-03-03 19:11:53,376 INFO L226 Difference]: Without dead ends: 362 [2022-03-03 19:11:53,376 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 19:11:53,377 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 71 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-03 19:11:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 179. [2022-03-03 19:11:53,380 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 19:11:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 519 transitions. [2022-03-03 19:11:53,381 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 519 transitions. Word has length 17 [2022-03-03 19:11:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,381 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 519 transitions. [2022-03-03 19:11:53,381 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 19:11:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 519 transitions. [2022-03-03 19:11:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,381 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 19:11:53,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-03 19:11:53,382 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash 13496993, now seen corresponding path program 21 times [2022-03-03 19:11:53,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753604204] [2022-03-03 19:11:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,433 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 19:11:53,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753604204] [2022-03-03 19:11:53,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753604204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646880048] [2022-03-03 19:11:53,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,434 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 19:11:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,557 INFO L93 Difference]: Finished difference Result 354 states and 972 transitions. [2022-03-03 19:11:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,557 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 19:11:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,558 INFO L225 Difference]: With dead ends: 354 [2022-03-03 19:11:53,558 INFO L226 Difference]: Without dead ends: 339 [2022-03-03 19:11:53,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:53,559 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:53,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 72 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-03-03 19:11:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 177. [2022-03-03 19:11:53,562 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 19:11:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:53,562 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,562 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:53,562 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 19:11:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,563 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 19:11:53,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-03 19:11:53,563 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 559046241, now seen corresponding path program 22 times [2022-03-03 19:11:53,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350327663] [2022-03-03 19:11:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,600 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 19:11:53,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350327663] [2022-03-03 19:11:53,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350327663] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855237017] [2022-03-03 19:11:53,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,601 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 19:11:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,705 INFO L93 Difference]: Finished difference Result 409 states and 1106 transitions. [2022-03-03 19:11:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,706 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 19:11:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,707 INFO L225 Difference]: With dead ends: 409 [2022-03-03 19:11:53,707 INFO L226 Difference]: Without dead ends: 394 [2022-03-03 19:11:53,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:53,707 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 19:11:53,708 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 19:11:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-03-03 19:11:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2022-03-03 19:11:53,711 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 19:11:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 521 transitions. [2022-03-03 19:11:53,711 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 521 transitions. Word has length 17 [2022-03-03 19:11:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,711 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 521 transitions. [2022-03-03 19:11:53,711 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 19:11:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 521 transitions. [2022-03-03 19:11:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,712 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,712 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 19:11:53,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-03 19:11:53,712 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1954405597, now seen corresponding path program 23 times [2022-03-03 19:11:53,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865321488] [2022-03-03 19:11:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,755 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 19:11:53,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865321488] [2022-03-03 19:11:53,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865321488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,756 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064230547] [2022-03-03 19:11:53,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,756 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 19:11:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:53,873 INFO L93 Difference]: Finished difference Result 407 states and 1110 transitions. [2022-03-03 19:11:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:53,873 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 19:11:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:53,883 INFO L225 Difference]: With dead ends: 407 [2022-03-03 19:11:53,883 INFO L226 Difference]: Without dead ends: 392 [2022-03-03 19:11:53,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:53,883 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 19:11:53,884 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 19:11:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-03 19:11:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 183. [2022-03-03 19:11:53,895 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 19:11:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 535 transitions. [2022-03-03 19:11:53,895 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 535 transitions. Word has length 17 [2022-03-03 19:11:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:53,895 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 535 transitions. [2022-03-03 19:11:53,896 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 19:11:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 535 transitions. [2022-03-03 19:11:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:53,896 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:53,896 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 19:11:53,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-03 19:11:53,896 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1977002145, now seen corresponding path program 24 times [2022-03-03 19:11:53,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:53,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935161149] [2022-03-03 19:11:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:53,937 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 19:11:53,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:53,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935161149] [2022-03-03 19:11:53,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935161149] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:53,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:53,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:53,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604892422] [2022-03-03 19:11:53,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:53,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:53,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:53,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:53,938 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 19:11:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,056 INFO L93 Difference]: Finished difference Result 384 states and 1065 transitions. [2022-03-03 19:11:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,057 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 19:11:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,064 INFO L225 Difference]: With dead ends: 384 [2022-03-03 19:11:54,065 INFO L226 Difference]: Without dead ends: 369 [2022-03-03 19:11:54,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:54,065 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 70 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 19:11:54,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 70 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-03 19:11:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 177. [2022-03-03 19:11:54,069 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 19:11:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:54,069 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,069 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:54,069 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 19:11:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,070 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 19:11:54,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-03 19:11:54,070 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 812835265, now seen corresponding path program 25 times [2022-03-03 19:11:54,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549125483] [2022-03-03 19:11:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,110 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 19:11:54,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549125483] [2022-03-03 19:11:54,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549125483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622645239] [2022-03-03 19:11:54,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,112 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 19:11:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,234 INFO L93 Difference]: Finished difference Result 403 states and 1103 transitions. [2022-03-03 19:11:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,234 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 19:11:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,235 INFO L225 Difference]: With dead ends: 403 [2022-03-03 19:11:54,235 INFO L226 Difference]: Without dead ends: 388 [2022-03-03 19:11:54,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,236 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 19:11:54,236 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 19:11:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-03-03 19:11:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 180. [2022-03-03 19:11:54,239 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 19:11:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-03-03 19:11:54,239 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-03-03 19:11:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,239 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-03-03 19:11:54,239 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 19:11:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-03-03 19:11:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,240 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 19:11:54,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-03 19:11:54,240 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1497181211, now seen corresponding path program 26 times [2022-03-03 19:11:54,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820421935] [2022-03-03 19:11:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,305 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 19:11:54,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820421935] [2022-03-03 19:11:54,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820421935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184334613] [2022-03-03 19:11:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,306 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 19:11:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,411 INFO L93 Difference]: Finished difference Result 401 states and 1096 transitions. [2022-03-03 19:11:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,411 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 19:11:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,412 INFO L225 Difference]: With dead ends: 401 [2022-03-03 19:11:54,412 INFO L226 Difference]: Without dead ends: 386 [2022-03-03 19:11:54,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,412 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 72 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 19:11:54,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 72 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-03 19:11:54,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 178. [2022-03-03 19:11:54,416 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 19:11:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-03-03 19:11:54,416 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-03-03 19:11:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,416 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-03-03 19:11:54,416 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 19:11:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-03-03 19:11:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,417 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,417 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 19:11:54,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-03 19:11:54,417 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash -375784259, now seen corresponding path program 27 times [2022-03-03 19:11:54,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159668473] [2022-03-03 19:11:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,460 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 19:11:54,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159668473] [2022-03-03 19:11:54,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159668473] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710892398] [2022-03-03 19:11:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,461 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 19:11:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,579 INFO L93 Difference]: Finished difference Result 395 states and 1075 transitions. [2022-03-03 19:11:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,579 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 19:11:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,580 INFO L225 Difference]: With dead ends: 395 [2022-03-03 19:11:54,580 INFO L226 Difference]: Without dead ends: 380 [2022-03-03 19:11:54,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,580 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 19:11:54,580 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 19:11:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-03 19:11:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 181. [2022-03-03 19:11:54,584 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 19:11:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 530 transitions. [2022-03-03 19:11:54,584 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 530 transitions. Word has length 17 [2022-03-03 19:11:54,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,584 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 530 transitions. [2022-03-03 19:11:54,584 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 19:11:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 530 transitions. [2022-03-03 19:11:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,585 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 19:11:54,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-03 19:11:54,585 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1335924927, now seen corresponding path program 28 times [2022-03-03 19:11:54,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591786547] [2022-03-03 19:11:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,641 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 19:11:54,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591786547] [2022-03-03 19:11:54,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591786547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222285967] [2022-03-03 19:11:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,643 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 19:11:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,751 INFO L93 Difference]: Finished difference Result 379 states and 1052 transitions. [2022-03-03 19:11:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,751 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 19:11:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,752 INFO L225 Difference]: With dead ends: 379 [2022-03-03 19:11:54,752 INFO L226 Difference]: Without dead ends: 364 [2022-03-03 19:11:54,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,752 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 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 19:11:54,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 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 19:11:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-03-03 19:11:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 178. [2022-03-03 19:11:54,755 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 19:11:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-03-03 19:11:54,756 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-03-03 19:11:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,756 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-03-03 19:11:54,756 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 19:11:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-03-03 19:11:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,756 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 19:11:54,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-03 19:11:54,756 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1661682081, now seen corresponding path program 29 times [2022-03-03 19:11:54,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28680990] [2022-03-03 19:11:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,795 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 19:11:54,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28680990] [2022-03-03 19:11:54,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28680990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262443999] [2022-03-03 19:11:54,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,796 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 19:11:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:54,907 INFO L93 Difference]: Finished difference Result 363 states and 1003 transitions. [2022-03-03 19:11:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:54,907 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 19:11:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:54,908 INFO L225 Difference]: With dead ends: 363 [2022-03-03 19:11:54,908 INFO L226 Difference]: Without dead ends: 348 [2022-03-03 19:11:54,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:54,908 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:54,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 72 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-03 19:11:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 180. [2022-03-03 19:11:54,912 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 19:11:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-03-03 19:11:54,912 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-03-03 19:11:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:54,912 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-03-03 19:11:54,912 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 19:11:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-03-03 19:11:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:54,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:54,913 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 19:11:54,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-03 19:11:54,913 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1286154459, now seen corresponding path program 30 times [2022-03-03 19:11:54,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:54,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107038708] [2022-03-03 19:11:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:54,962 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 19:11:54,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:54,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107038708] [2022-03-03 19:11:54,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107038708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:54,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:54,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:54,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942307291] [2022-03-03 19:11:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:54,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:54,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:54,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:54,963 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 19:11:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,069 INFO L93 Difference]: Finished difference Result 342 states and 965 transitions. [2022-03-03 19:11:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,070 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 19:11:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,070 INFO L225 Difference]: With dead ends: 342 [2022-03-03 19:11:55,070 INFO L226 Difference]: Without dead ends: 327 [2022-03-03 19:11:55,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:55,071 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 72 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 19:11:55,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 72 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-03 19:11:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 177. [2022-03-03 19:11:55,074 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 19:11:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-03-03 19:11:55,074 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-03-03 19:11:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,074 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-03-03 19:11:55,074 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 19:11:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-03-03 19:11:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,075 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 19:11:55,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-03 19:11:55,075 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash -545211245, now seen corresponding path program 31 times [2022-03-03 19:11:55,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318486461] [2022-03-03 19:11:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,112 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 19:11:55,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318486461] [2022-03-03 19:11:55,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318486461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721126506] [2022-03-03 19:11:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,114 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 19:11:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,227 INFO L93 Difference]: Finished difference Result 377 states and 1036 transitions. [2022-03-03 19:11:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,227 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 19:11:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,228 INFO L225 Difference]: With dead ends: 377 [2022-03-03 19:11:55,228 INFO L226 Difference]: Without dead ends: 362 [2022-03-03 19:11:55,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:55,228 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 72 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 19:11:55,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 72 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-03 19:11:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 186. [2022-03-03 19:11:55,231 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 19:11:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2022-03-03 19:11:55,232 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 17 [2022-03-03 19:11:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,232 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2022-03-03 19:11:55,232 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 19:11:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2022-03-03 19:11:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,240 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 19:11:55,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-03 19:11:55,240 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1559974007, now seen corresponding path program 32 times [2022-03-03 19:11:55,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698032250] [2022-03-03 19:11:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,293 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 19:11:55,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698032250] [2022-03-03 19:11:55,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698032250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944079239] [2022-03-03 19:11:55,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,294 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 19:11:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,395 INFO L93 Difference]: Finished difference Result 386 states and 1062 transitions. [2022-03-03 19:11:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,395 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 19:11:55,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,396 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:11:55,396 INFO L226 Difference]: Without dead ends: 371 [2022-03-03 19:11:55,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:55,396 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 63 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 19:11:55,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 63 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-03 19:11:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2022-03-03 19:11:55,399 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 19:11:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2022-03-03 19:11:55,400 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 17 [2022-03-03 19:11:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,400 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2022-03-03 19:11:55,400 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 19:11:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2022-03-03 19:11:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,400 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 19:11:55,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-03 19:11:55,400 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1582570555, now seen corresponding path program 33 times [2022-03-03 19:11:55,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500259444] [2022-03-03 19:11:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,455 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 19:11:55,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500259444] [2022-03-03 19:11:55,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500259444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228973989] [2022-03-03 19:11:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,456 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 19:11:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,571 INFO L93 Difference]: Finished difference Result 393 states and 1078 transitions. [2022-03-03 19:11:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,572 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 19:11:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,573 INFO L225 Difference]: With dead ends: 393 [2022-03-03 19:11:55,573 INFO L226 Difference]: Without dead ends: 378 [2022-03-03 19:11:55,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:55,573 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 19:11:55,573 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 19:11:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-03-03 19:11:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 181. [2022-03-03 19:11:55,576 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 19:11:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-03-03 19:11:55,576 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-03-03 19:11:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,577 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-03-03 19:11:55,577 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 19:11:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-03-03 19:11:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,577 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 19:11:55,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-03 19:11:55,577 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash 14936047, now seen corresponding path program 34 times [2022-03-03 19:11:55,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997232912] [2022-03-03 19:11:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,616 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 19:11:55,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997232912] [2022-03-03 19:11:55,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997232912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090076603] [2022-03-03 19:11:55,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,617 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 19:11:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,733 INFO L93 Difference]: Finished difference Result 438 states and 1184 transitions. [2022-03-03 19:11:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,734 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 19:11:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,734 INFO L225 Difference]: With dead ends: 438 [2022-03-03 19:11:55,734 INFO L226 Difference]: Without dead ends: 423 [2022-03-03 19:11:55,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:55,735 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:55,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 78 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-03 19:11:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 185. [2022-03-03 19:11:55,738 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 19:11:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 542 transitions. [2022-03-03 19:11:55,738 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 542 transitions. Word has length 17 [2022-03-03 19:11:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,739 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 542 transitions. [2022-03-03 19:11:55,739 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 19:11:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 542 transitions. [2022-03-03 19:11:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,739 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 19:11:55,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-03 19:11:55,739 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -393760463, now seen corresponding path program 35 times [2022-03-03 19:11:55,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208287235] [2022-03-03 19:11:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,779 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 19:11:55,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208287235] [2022-03-03 19:11:55,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208287235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293174835] [2022-03-03 19:11:55,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,780 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 19:11:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:55,899 INFO L93 Difference]: Finished difference Result 433 states and 1175 transitions. [2022-03-03 19:11:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:55,900 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 19:11:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:55,901 INFO L225 Difference]: With dead ends: 433 [2022-03-03 19:11:55,901 INFO L226 Difference]: Without dead ends: 418 [2022-03-03 19:11:55,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:55,901 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:55,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-03 19:11:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 187. [2022-03-03 19:11:55,905 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 19:11:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2022-03-03 19:11:55,905 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2022-03-03 19:11:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:55,905 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2022-03-03 19:11:55,905 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 19:11:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2022-03-03 19:11:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:55,906 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:55,906 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 19:11:55,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-03 19:11:55,906 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 896621357, now seen corresponding path program 36 times [2022-03-03 19:11:55,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:55,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155039856] [2022-03-03 19:11:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:55,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:55,948 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 19:11:55,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:55,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155039856] [2022-03-03 19:11:55,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155039856] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:55,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:55,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:55,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744006303] [2022-03-03 19:11:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:55,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:55,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:55,949 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 19:11:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,058 INFO L93 Difference]: Finished difference Result 416 states and 1145 transitions. [2022-03-03 19:11:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,058 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 19:11:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,059 INFO L225 Difference]: With dead ends: 416 [2022-03-03 19:11:56,059 INFO L226 Difference]: Without dead ends: 401 [2022-03-03 19:11:56,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:56,060 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:56,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 69 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-03-03 19:11:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 181. [2022-03-03 19:11:56,063 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 19:11:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-03-03 19:11:56,063 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-03-03 19:11:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,063 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-03-03 19:11:56,063 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 19:11:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-03-03 19:11:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,064 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 19:11:56,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-03 19:11:56,064 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1511154993, now seen corresponding path program 37 times [2022-03-03 19:11:56,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52586575] [2022-03-03 19:11:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,109 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 19:11:56,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52586575] [2022-03-03 19:11:56,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52586575] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,109 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029492353] [2022-03-03 19:11:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,110 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 19:11:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,213 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-03-03 19:11:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,214 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 19:11:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,214 INFO L225 Difference]: With dead ends: 437 [2022-03-03 19:11:56,214 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:11:56,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:56,215 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 71 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 19:11:56,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 71 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:11:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 184. [2022-03-03 19:11:56,218 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 19:11:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-03-03 19:11:56,218 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-03-03 19:11:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,219 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-03-03 19:11:56,219 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 19:11:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-03-03 19:11:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,219 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,219 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 19:11:56,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-03 19:11:56,219 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -798861483, now seen corresponding path program 38 times [2022-03-03 19:11:56,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935238599] [2022-03-03 19:11:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,266 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 19:11:56,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935238599] [2022-03-03 19:11:56,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935238599] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416327063] [2022-03-03 19:11:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,267 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 19:11:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,377 INFO L93 Difference]: Finished difference Result 435 states and 1194 transitions. [2022-03-03 19:11:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,378 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 19:11:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,378 INFO L225 Difference]: With dead ends: 435 [2022-03-03 19:11:56,379 INFO L226 Difference]: Without dead ends: 420 [2022-03-03 19:11:56,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:56,379 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 75 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 19:11:56,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 75 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-03 19:11:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 182. [2022-03-03 19:11:56,382 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 19:11:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-03-03 19:11:56,382 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-03-03 19:11:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,383 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-03-03 19:11:56,383 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 19:11:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-03-03 19:11:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,383 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 19:11:56,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-03 19:11:56,383 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash 322535469, now seen corresponding path program 39 times [2022-03-03 19:11:56,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026652483] [2022-03-03 19:11:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,424 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 19:11:56,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026652483] [2022-03-03 19:11:56,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026652483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180576633] [2022-03-03 19:11:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,425 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 19:11:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,523 INFO L93 Difference]: Finished difference Result 468 states and 1258 transitions. [2022-03-03 19:11:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,523 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 19:11:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,524 INFO L225 Difference]: With dead ends: 468 [2022-03-03 19:11:56,524 INFO L226 Difference]: Without dead ends: 453 [2022-03-03 19:11:56,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:56,524 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:56,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 72 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-03 19:11:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 185. [2022-03-03 19:11:56,528 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 19:11:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 548 transitions. [2022-03-03 19:11:56,528 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 548 transitions. Word has length 17 [2022-03-03 19:11:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,528 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 548 transitions. [2022-03-03 19:11:56,528 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 19:11:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 548 transitions. [2022-03-03 19:11:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,536 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 19:11:56,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-03 19:11:56,537 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -637605199, now seen corresponding path program 40 times [2022-03-03 19:11:56,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746051557] [2022-03-03 19:11:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,586 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 19:11:56,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746051557] [2022-03-03 19:11:56,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746051557] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,586 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181809025] [2022-03-03 19:11:56,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,587 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 19:11:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,713 INFO L93 Difference]: Finished difference Result 452 states and 1235 transitions. [2022-03-03 19:11:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,713 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 19:11:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,714 INFO L225 Difference]: With dead ends: 452 [2022-03-03 19:11:56,714 INFO L226 Difference]: Without dead ends: 437 [2022-03-03 19:11:56,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:56,714 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 76 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 19:11:56,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 76 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-03 19:11:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 182. [2022-03-03 19:11:56,718 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 19:11:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-03-03 19:11:56,718 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-03-03 19:11:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,722 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-03-03 19:11:56,722 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 19:11:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-03-03 19:11:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,723 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 19:11:56,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-03 19:11:56,723 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1934965487, now seen corresponding path program 41 times [2022-03-03 19:11:56,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440503633] [2022-03-03 19:11:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,773 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 19:11:56,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440503633] [2022-03-03 19:11:56,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440503633] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,773 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065142832] [2022-03-03 19:11:56,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,774 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 19:11:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:56,884 INFO L93 Difference]: Finished difference Result 446 states and 1215 transitions. [2022-03-03 19:11:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:56,885 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 19:11:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:56,886 INFO L225 Difference]: With dead ends: 446 [2022-03-03 19:11:56,886 INFO L226 Difference]: Without dead ends: 431 [2022-03-03 19:11:56,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:56,886 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 88 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 76 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 19:11:56,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 76 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-03 19:11:56,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 184. [2022-03-03 19:11:56,889 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 19:11:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-03-03 19:11:56,890 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-03-03 19:11:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:56,890 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-03-03 19:11:56,890 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 19:11:56,890 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-03-03 19:11:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:56,890 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:56,890 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 19:11:56,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-03 19:11:56,890 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -587834731, now seen corresponding path program 42 times [2022-03-03 19:11:56,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:56,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867125448] [2022-03-03 19:11:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:56,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:56,941 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 19:11:56,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:56,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867125448] [2022-03-03 19:11:56,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867125448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:56,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:56,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:56,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966110936] [2022-03-03 19:11:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:56,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:56,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:56,942 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 19:11:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,073 INFO L93 Difference]: Finished difference Result 425 states and 1177 transitions. [2022-03-03 19:11:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,074 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 19:11:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,075 INFO L225 Difference]: With dead ends: 425 [2022-03-03 19:11:57,075 INFO L226 Difference]: Without dead ends: 410 [2022-03-03 19:11:57,075 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 19:11:57,075 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 19:11:57,075 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 19:11:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-03 19:11:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 179. [2022-03-03 19:11:57,078 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 19:11:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 518 transitions. [2022-03-03 19:11:57,078 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 518 transitions. Word has length 17 [2022-03-03 19:11:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,079 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 518 transitions. [2022-03-03 19:11:57,079 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 19:11:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 518 transitions. [2022-03-03 19:11:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,079 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 19:11:57,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-03 19:11:57,079 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1352503261, now seen corresponding path program 43 times [2022-03-03 19:11:57,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545373000] [2022-03-03 19:11:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,124 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 19:11:57,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545373000] [2022-03-03 19:11:57,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545373000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297728607] [2022-03-03 19:11:57,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,125 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 19:11:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,245 INFO L93 Difference]: Finished difference Result 323 states and 889 transitions. [2022-03-03 19:11:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,245 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 19:11:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,246 INFO L225 Difference]: With dead ends: 323 [2022-03-03 19:11:57,246 INFO L226 Difference]: Without dead ends: 308 [2022-03-03 19:11:57,246 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 19:11:57,246 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 19:11:57,246 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 19:11:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-03 19:11:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 187. [2022-03-03 19:11:57,249 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 19:11:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2022-03-03 19:11:57,249 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 17 [2022-03-03 19:11:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,249 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2022-03-03 19:11:57,249 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 19:11:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2022-03-03 19:11:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,250 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,250 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 19:11:57,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-03 19:11:57,250 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash 943806751, now seen corresponding path program 44 times [2022-03-03 19:11:57,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820474112] [2022-03-03 19:11:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,302 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 19:11:57,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820474112] [2022-03-03 19:11:57,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820474112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,303 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268978966] [2022-03-03 19:11:57,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,303 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 19:11:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,430 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-03-03 19:11:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,430 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 19:11:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,431 INFO L225 Difference]: With dead ends: 353 [2022-03-03 19:11:57,431 INFO L226 Difference]: Without dead ends: 338 [2022-03-03 19:11:57,431 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 19:11:57,433 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 67 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 19:11:57,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 67 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-03-03 19:11:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 189. [2022-03-03 19:11:57,440 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 19:11:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2022-03-03 19:11:57,440 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 17 [2022-03-03 19:11:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,441 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2022-03-03 19:11:57,441 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 19:11:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2022-03-03 19:11:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,441 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 19:11:57,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-03 19:11:57,441 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2060778725, now seen corresponding path program 45 times [2022-03-03 19:11:57,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550102294] [2022-03-03 19:11:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,485 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 19:11:57,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550102294] [2022-03-03 19:11:57,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550102294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228616328] [2022-03-03 19:11:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,486 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 19:11:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,599 INFO L93 Difference]: Finished difference Result 336 states and 921 transitions. [2022-03-03 19:11:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,599 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 19:11:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,600 INFO L225 Difference]: With dead ends: 336 [2022-03-03 19:11:57,600 INFO L226 Difference]: Without dead ends: 321 [2022-03-03 19:11:57,600 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 19:11:57,600 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 70 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-03 19:11:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 183. [2022-03-03 19:11:57,603 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 19:11:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2022-03-03 19:11:57,604 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 17 [2022-03-03 19:11:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,604 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2022-03-03 19:11:57,604 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 19:11:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2022-03-03 19:11:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,604 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 19:11:57,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-03 19:11:57,604 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash -140211165, now seen corresponding path program 46 times [2022-03-03 19:11:57,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495171412] [2022-03-03 19:11:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,635 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 19:11:57,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495171412] [2022-03-03 19:11:57,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495171412] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971848391] [2022-03-03 19:11:57,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,636 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 19:11:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,717 INFO L93 Difference]: Finished difference Result 324 states and 889 transitions. [2022-03-03 19:11:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,717 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 19:11:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,718 INFO L225 Difference]: With dead ends: 324 [2022-03-03 19:11:57,718 INFO L226 Difference]: Without dead ends: 309 [2022-03-03 19:11:57,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:11:57,718 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 19:11:57,718 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 19:11:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-03-03 19:11:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2022-03-03 19:11:57,721 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 19:11:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-03-03 19:11:57,721 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-03-03 19:11:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,721 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-03-03 19:11:57,721 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 19:11:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-03-03 19:11:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,722 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 19:11:57,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-03 19:11:57,722 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 790599975, now seen corresponding path program 47 times [2022-03-03 19:11:57,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496879768] [2022-03-03 19:11:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,773 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 19:11:57,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496879768] [2022-03-03 19:11:57,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496879768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,773 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434665138] [2022-03-03 19:11:57,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,774 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 19:11:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:57,886 INFO L93 Difference]: Finished difference Result 354 states and 954 transitions. [2022-03-03 19:11:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:57,886 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 19:11:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:57,887 INFO L225 Difference]: With dead ends: 354 [2022-03-03 19:11:57,887 INFO L226 Difference]: Without dead ends: 339 [2022-03-03 19:11:57,887 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 19:11:57,887 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 81 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:57,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 67 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-03-03 19:11:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 191. [2022-03-03 19:11:57,891 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 19:11:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 552 transitions. [2022-03-03 19:11:57,891 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 552 transitions. Word has length 17 [2022-03-03 19:11:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:57,891 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 552 transitions. [2022-03-03 19:11:57,891 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 19:11:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 552 transitions. [2022-03-03 19:11:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:57,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:57,892 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 19:11:57,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-03 19:11:57,892 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2080981795, now seen corresponding path program 48 times [2022-03-03 19:11:57,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:57,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717735409] [2022-03-03 19:11:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:57,946 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 19:11:57,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:57,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717735409] [2022-03-03 19:11:57,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717735409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:57,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:57,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:57,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073885372] [2022-03-03 19:11:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:57,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:57,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:57,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:57,947 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 19:11:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,059 INFO L93 Difference]: Finished difference Result 333 states and 916 transitions. [2022-03-03 19:11:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,059 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 19:11:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,060 INFO L225 Difference]: With dead ends: 333 [2022-03-03 19:11:58,060 INFO L226 Difference]: Without dead ends: 318 [2022-03-03 19:11:58,060 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 19:11:58,060 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 62 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 68 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 19:11:58,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 68 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-03-03 19:11:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 189. [2022-03-03 19:11:58,063 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 19:11:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-03-03 19:11:58,063 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-03-03 19:11:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,063 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-03-03 19:11:58,063 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 19:11:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-03-03 19:11:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,064 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 19:11:58,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-03 19:11:58,064 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 424957057, now seen corresponding path program 49 times [2022-03-03 19:11:58,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857882300] [2022-03-03 19:11:58,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,110 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 19:11:58,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857882300] [2022-03-03 19:11:58,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857882300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682934319] [2022-03-03 19:11:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,112 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 19:11:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,224 INFO L93 Difference]: Finished difference Result 386 states and 1068 transitions. [2022-03-03 19:11:58,224 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 19:11:58,225 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:11:58,225 INFO L226 Difference]: Without dead ends: 371 [2022-03-03 19:11:58,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:58,225 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 75 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 68 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-03 19:11:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 194. [2022-03-03 19:11:58,228 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 19:11:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 564 transitions. [2022-03-03 19:11:58,229 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 564 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 194 states and 564 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 194 states and 564 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: SelfDestructingSolverStorable80 [2022-03-03 19:11:58,229 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1885059419, now seen corresponding path program 50 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 [1189657290] [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 19:11:58,271 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 19:11:58,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189657290] [2022-03-03 19:11:58,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189657290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883685626] [2022-03-03 19:11:58,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,272 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 19:11:58,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,381 INFO L93 Difference]: Finished difference Result 390 states and 1074 transitions. [2022-03-03 19:11:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,381 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 19:11:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,382 INFO L225 Difference]: With dead ends: 390 [2022-03-03 19:11:58,382 INFO L226 Difference]: Without dead ends: 375 [2022-03-03 19:11:58,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:58,382 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 70 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-03 19:11:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 192. [2022-03-03 19:11:58,386 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 19:11:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:58,386 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,386 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:58,386 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 19:11:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,387 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 19:11:58,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-03 19:11:58,387 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 801592695, now seen corresponding path program 51 times [2022-03-03 19:11:58,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068834960] [2022-03-03 19:11:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,425 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 19:11:58,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068834960] [2022-03-03 19:11:58,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068834960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447277077] [2022-03-03 19:11:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,426 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 19:11:58,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,529 INFO L93 Difference]: Finished difference Result 386 states and 1060 transitions. [2022-03-03 19:11:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,529 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 19:11:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,530 INFO L225 Difference]: With dead ends: 386 [2022-03-03 19:11:58,530 INFO L226 Difference]: Without dead ends: 371 [2022-03-03 19:11:58,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:58,530 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 64 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-03 19:11:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 192. [2022-03-03 19:11:58,533 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 19:11:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:58,534 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,534 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:58,534 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 19:11:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,534 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 19:11:58,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-03 19:11:58,534 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1581265029, now seen corresponding path program 52 times [2022-03-03 19:11:58,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981116168] [2022-03-03 19:11:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,577 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 19:11:58,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981116168] [2022-03-03 19:11:58,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981116168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949477622] [2022-03-03 19:11:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,578 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 19:11:58,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,697 INFO L93 Difference]: Finished difference Result 464 states and 1256 transitions. [2022-03-03 19:11:58,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,697 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 19:11:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,698 INFO L225 Difference]: With dead ends: 464 [2022-03-03 19:11:58,698 INFO L226 Difference]: Without dead ends: 449 [2022-03-03 19:11:58,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:58,698 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 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 19:11:58,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 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 19:11:58,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-03 19:11:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 195. [2022-03-03 19:11:58,702 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 19:11:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-03-03 19:11:58,702 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-03-03 19:11:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,702 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-03-03 19:11:58,702 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 19:11:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-03-03 19:11:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,703 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 19:11:58,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-03 19:11:58,703 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash -728751447, now seen corresponding path program 53 times [2022-03-03 19:11:58,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387188839] [2022-03-03 19:11:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,763 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 19:11:58,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387188839] [2022-03-03 19:11:58,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387188839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341191523] [2022-03-03 19:11:58,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,764 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 19:11:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:58,915 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2022-03-03 19:11:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:58,915 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 19:11:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:58,916 INFO L225 Difference]: With dead ends: 468 [2022-03-03 19:11:58,916 INFO L226 Difference]: Without dead ends: 453 [2022-03-03 19:11:58,916 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 19:11:58,917 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:58,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 82 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-03 19:11:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 193. [2022-03-03 19:11:58,921 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 19:11:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-03-03 19:11:58,922 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-03-03 19:11:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:58,922 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-03-03 19:11:58,922 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 19:11:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-03-03 19:11:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:58,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:58,924 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 19:11:58,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-03 19:11:58,924 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:58,924 INFO L85 PathProgramCache]: Analyzing trace with hash 392645505, now seen corresponding path program 54 times [2022-03-03 19:11:58,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:58,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816228676] [2022-03-03 19:11:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:58,968 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 19:11:58,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:58,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816228676] [2022-03-03 19:11:58,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816228676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:58,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:58,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:58,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63968932] [2022-03-03 19:11:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:58,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:58,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:58,970 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 19:11:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,062 INFO L93 Difference]: Finished difference Result 431 states and 1182 transitions. [2022-03-03 19:11:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,063 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 19:11:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,063 INFO L225 Difference]: With dead ends: 431 [2022-03-03 19:11:59,063 INFO L226 Difference]: Without dead ends: 416 [2022-03-03 19:11:59,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:59,067 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 70 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 19:11:59,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 70 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-03-03 19:11:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 196. [2022-03-03 19:11:59,071 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 19:11:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 575 transitions. [2022-03-03 19:11:59,072 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 575 transitions. Word has length 17 [2022-03-03 19:11:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,073 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 575 transitions. [2022-03-03 19:11:59,073 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 19:11:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 575 transitions. [2022-03-03 19:11:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,073 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 19:11:59,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-03 19:11:59,073 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash -567495163, now seen corresponding path program 55 times [2022-03-03 19:11:59,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235456731] [2022-03-03 19:11:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,126 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 19:11:59,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235456731] [2022-03-03 19:11:59,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235456731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810793483] [2022-03-03 19:11:59,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,128 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 19:11:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,219 INFO L93 Difference]: Finished difference Result 415 states and 1159 transitions. [2022-03-03 19:11:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,219 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 19:11:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,220 INFO L225 Difference]: With dead ends: 415 [2022-03-03 19:11:59,220 INFO L226 Difference]: Without dead ends: 400 [2022-03-03 19:11:59,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:59,220 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 73 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-03-03 19:11:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 193. [2022-03-03 19:11:59,223 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 19:11:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-03-03 19:11:59,224 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-03-03 19:11:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,224 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-03-03 19:11:59,224 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 19:11:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-03-03 19:11:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,225 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 19:11:59,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-03 19:11:59,225 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1864855451, now seen corresponding path program 56 times [2022-03-03 19:11:59,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896859027] [2022-03-03 19:11:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,284 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 19:11:59,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896859027] [2022-03-03 19:11:59,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896859027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500917329] [2022-03-03 19:11:59,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,286 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 19:11:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,379 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2022-03-03 19:11:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,380 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 19:11:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,381 INFO L225 Difference]: With dead ends: 449 [2022-03-03 19:11:59,381 INFO L226 Difference]: Without dead ends: 434 [2022-03-03 19:11:59,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:59,381 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 76 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-03 19:11:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 195. [2022-03-03 19:11:59,385 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 19:11:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-03-03 19:11:59,385 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-03-03 19:11:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,385 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-03-03 19:11:59,385 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 19:11:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-03-03 19:11:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,386 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 19:11:59,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-03 19:11:59,386 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash -517724695, now seen corresponding path program 57 times [2022-03-03 19:11:59,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344984039] [2022-03-03 19:11:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,448 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 19:11:59,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344984039] [2022-03-03 19:11:59,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344984039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527488275] [2022-03-03 19:11:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,450 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 19:11:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,574 INFO L93 Difference]: Finished difference Result 428 states and 1191 transitions. [2022-03-03 19:11:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,575 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 19:11:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,576 INFO L225 Difference]: With dead ends: 428 [2022-03-03 19:11:59,576 INFO L226 Difference]: Without dead ends: 413 [2022-03-03 19:11:59,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:11:59,576 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 78 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 19:11:59,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 78 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-03 19:11:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2022-03-03 19:11:59,579 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 19:11:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:11:59,580 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:11:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,580 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:11:59,580 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 19:11:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:11:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,580 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,580 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 19:11:59,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-03 19:11:59,580 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash -57893061, now seen corresponding path program 58 times [2022-03-03 19:11:59,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663170774] [2022-03-03 19:11:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,643 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 19:11:59,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663170774] [2022-03-03 19:11:59,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663170774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330824177] [2022-03-03 19:11:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,644 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 19:11:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,750 INFO L93 Difference]: Finished difference Result 429 states and 1161 transitions. [2022-03-03 19:11:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,750 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 19:11:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,751 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:11:59,751 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:11:59,751 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 19:11:59,751 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 72 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 19:11:59,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 72 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:11:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 194. [2022-03-03 19:11:59,755 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 19:11:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 562 transitions. [2022-03-03 19:11:59,756 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 562 transitions. Word has length 17 [2022-03-03 19:11:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,756 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 562 transitions. [2022-03-03 19:11:59,756 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 19:11:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 562 transitions. [2022-03-03 19:11:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,756 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 19:11:59,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-03 19:11:59,757 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518793, now seen corresponding path program 59 times [2022-03-03 19:11:59,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308516281] [2022-03-03 19:11:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,804 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 19:11:59,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308516281] [2022-03-03 19:11:59,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308516281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761806220] [2022-03-03 19:11:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,805 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 19:11:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:11:59,899 INFO L93 Difference]: Finished difference Result 430 states and 1172 transitions. [2022-03-03 19:11:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:11:59,900 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 19:11:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:11:59,900 INFO L225 Difference]: With dead ends: 430 [2022-03-03 19:11:59,901 INFO L226 Difference]: Without dead ends: 415 [2022-03-03 19:11:59,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:11:59,901 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:11:59,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 75 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:11:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-03 19:11:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 196. [2022-03-03 19:11:59,904 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 19:11:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 571 transitions. [2022-03-03 19:11:59,905 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 571 transitions. Word has length 17 [2022-03-03 19:11:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:11:59,905 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 571 transitions. [2022-03-03 19:11:59,905 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 19:11:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 571 transitions. [2022-03-03 19:11:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:11:59,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:11:59,905 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 19:11:59,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-03 19:11:59,906 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:11:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:11:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 79611963, now seen corresponding path program 60 times [2022-03-03 19:11:59,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:11:59,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330416344] [2022-03-03 19:11:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:11:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:11:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:11:59,969 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 19:11:59,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:11:59,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330416344] [2022-03-03 19:11:59,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330416344] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:11:59,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:11:59,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:11:59,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090818440] [2022-03-03 19:11:59,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:11:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:11:59,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:11:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:11:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:11:59,970 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 19:12:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,088 INFO L93 Difference]: Finished difference Result 409 states and 1134 transitions. [2022-03-03 19:12:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,088 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 19:12:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,089 INFO L225 Difference]: With dead ends: 409 [2022-03-03 19:12:00,089 INFO L226 Difference]: Without dead ends: 394 [2022-03-03 19:12:00,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:00,089 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 19:12:00,089 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 19:12:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-03-03 19:12:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 192. [2022-03-03 19:12:00,092 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 19:12:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-03-03 19:12:00,093 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-03-03 19:12:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,093 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-03-03 19:12:00,093 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 19:12:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-03-03 19:12:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,094 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 19:12:00,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-03 19:12:00,094 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash -914182639, now seen corresponding path program 61 times [2022-03-03 19:12:00,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515157580] [2022-03-03 19:12:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,134 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 19:12:00,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515157580] [2022-03-03 19:12:00,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515157580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328536282] [2022-03-03 19:12:00,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,135 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 19:12:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,252 INFO L93 Difference]: Finished difference Result 328 states and 903 transitions. [2022-03-03 19:12:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,252 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 19:12:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,253 INFO L225 Difference]: With dead ends: 328 [2022-03-03 19:12:00,253 INFO L226 Difference]: Without dead ends: 313 [2022-03-03 19:12:00,253 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 19:12:00,253 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 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 19:12:00,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 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 19:12:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-03 19:12:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 197. [2022-03-03 19:12:00,256 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 19:12:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-03-03 19:12:00,257 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-03-03 19:12:00,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,257 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-03-03 19:12:00,257 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 19:12:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-03-03 19:12:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,257 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 19:12:00,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-03 19:12:00,257 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1637182287, now seen corresponding path program 62 times [2022-03-03 19:12:00,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690422871] [2022-03-03 19:12:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,308 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 19:12:00,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690422871] [2022-03-03 19:12:00,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690422871] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419267607] [2022-03-03 19:12:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,309 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 19:12:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,421 INFO L93 Difference]: Finished difference Result 357 states and 963 transitions. [2022-03-03 19:12:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,422 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 19:12:00,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,423 INFO L225 Difference]: With dead ends: 357 [2022-03-03 19:12:00,423 INFO L226 Difference]: Without dead ends: 342 [2022-03-03 19:12:00,423 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 19:12:00,423 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 88 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 69 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-03-03 19:12:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 199. [2022-03-03 19:12:00,426 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 19:12:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-03-03 19:12:00,427 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-03-03 19:12:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,427 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-03-03 19:12:00,427 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 19:12:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-03-03 19:12:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,427 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,427 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 19:12:00,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-03 19:12:00,427 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash 347768533, now seen corresponding path program 63 times [2022-03-03 19:12:00,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879625320] [2022-03-03 19:12:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,512 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 19:12:00,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879625320] [2022-03-03 19:12:00,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879625320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855256232] [2022-03-03 19:12:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,513 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 19:12:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,628 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2022-03-03 19:12:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,628 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 19:12:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,629 INFO L225 Difference]: With dead ends: 334 [2022-03-03 19:12:00,629 INFO L226 Difference]: Without dead ends: 319 [2022-03-03 19:12:00,629 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 19:12:00,629 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 62 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 69 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 19:12:00,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 69 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-03 19:12:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2022-03-03 19:12:00,633 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 19:12:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:00,633 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,633 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:00,633 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 19:12:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,634 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 19:12:00,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-03 19:12:00,634 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1049436965, now seen corresponding path program 64 times [2022-03-03 19:12:00,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615119500] [2022-03-03 19:12:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,704 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 19:12:00,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615119500] [2022-03-03 19:12:00,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615119500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,704 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177196509] [2022-03-03 19:12:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,705 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 19:12:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,791 INFO L93 Difference]: Finished difference Result 349 states and 945 transitions. [2022-03-03 19:12:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,791 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 19:12:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,791 INFO L225 Difference]: With dead ends: 349 [2022-03-03 19:12:00,792 INFO L226 Difference]: Without dead ends: 334 [2022-03-03 19:12:00,792 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 19:12:00,792 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 19:12:00,792 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 19:12:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-03-03 19:12:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 199. [2022-03-03 19:12:00,795 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 19:12:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-03-03 19:12:00,795 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-03-03 19:12:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,796 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-03-03 19:12:00,796 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 19:12:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-03-03 19:12:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,796 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 19:12:00,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-03 19:12:00,796 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 935513855, now seen corresponding path program 65 times [2022-03-03 19:12:00,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134501518] [2022-03-03 19:12:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,829 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 19:12:00,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134501518] [2022-03-03 19:12:00,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134501518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193516893] [2022-03-03 19:12:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,830 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 19:12:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:00,930 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-03-03 19:12:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:00,930 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 19:12:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:00,931 INFO L225 Difference]: With dead ends: 353 [2022-03-03 19:12:00,931 INFO L226 Difference]: Without dead ends: 338 [2022-03-03 19:12:00,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:00,931 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:00,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 73 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:00,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-03-03 19:12:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2022-03-03 19:12:00,934 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 19:12:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-03-03 19:12:00,935 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-03-03 19:12:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:00,935 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-03-03 19:12:00,935 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 19:12:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-03-03 19:12:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:00,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:00,935 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 19:12:00,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-03 19:12:00,936 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -672801327, now seen corresponding path program 66 times [2022-03-03 19:12:00,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:00,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189655953] [2022-03-03 19:12:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:00,978 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 19:12:00,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:00,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189655953] [2022-03-03 19:12:00,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189655953] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:00,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:00,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:00,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337514632] [2022-03-03 19:12:00,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:00,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:00,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:00,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:00,979 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 19:12:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,085 INFO L93 Difference]: Finished difference Result 324 states and 891 transitions. [2022-03-03 19:12:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,085 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 19:12:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,086 INFO L225 Difference]: With dead ends: 324 [2022-03-03 19:12:01,086 INFO L226 Difference]: Without dead ends: 309 [2022-03-03 19:12:01,086 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 19:12:01,086 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 19:12:01,086 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 19:12:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-03-03 19:12:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2022-03-03 19:12:01,089 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 19:12:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:01,089 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,090 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:01,090 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 19:12:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,090 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,090 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 19:12:01,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-03 19:12:01,090 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash 571626125, now seen corresponding path program 67 times [2022-03-03 19:12:01,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320339682] [2022-03-03 19:12:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,126 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 19:12:01,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320339682] [2022-03-03 19:12:01,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320339682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350809448] [2022-03-03 19:12:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,127 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 19:12:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,227 INFO L93 Difference]: Finished difference Result 442 states and 1201 transitions. [2022-03-03 19:12:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,227 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 19:12:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,228 INFO L225 Difference]: With dead ends: 442 [2022-03-03 19:12:01,228 INFO L226 Difference]: Without dead ends: 427 [2022-03-03 19:12:01,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,229 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 69 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-03 19:12:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 198. [2022-03-03 19:12:01,232 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 19:12:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-03-03 19:12:01,232 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-03-03 19:12:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,232 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-03-03 19:12:01,232 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 19:12:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-03-03 19:12:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,233 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,233 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 19:12:01,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-03 19:12:01,233 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash -151373523, now seen corresponding path program 68 times [2022-03-03 19:12:01,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919473942] [2022-03-03 19:12:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,273 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 19:12:01,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919473942] [2022-03-03 19:12:01,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919473942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110665553] [2022-03-03 19:12:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,274 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 19:12:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,394 INFO L93 Difference]: Finished difference Result 465 states and 1248 transitions. [2022-03-03 19:12:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,395 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 19:12:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,396 INFO L225 Difference]: With dead ends: 465 [2022-03-03 19:12:01,396 INFO L226 Difference]: Without dead ends: 450 [2022-03-03 19:12:01,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,396 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 88 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-03 19:12:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 200. [2022-03-03 19:12:01,399 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 19:12:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-03-03 19:12:01,400 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-03-03 19:12:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,400 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-03-03 19:12:01,400 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 19:12:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-03-03 19:12:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,400 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 19:12:01,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-03 19:12:01,401 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1833577297, now seen corresponding path program 69 times [2022-03-03 19:12:01,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944406066] [2022-03-03 19:12:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,445 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 19:12:01,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944406066] [2022-03-03 19:12:01,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944406066] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,445 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425286635] [2022-03-03 19:12:01,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,446 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 19:12:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,562 INFO L93 Difference]: Finished difference Result 442 states and 1203 transitions. [2022-03-03 19:12:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,563 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 19:12:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,563 INFO L225 Difference]: With dead ends: 442 [2022-03-03 19:12:01,564 INFO L226 Difference]: Without dead ends: 427 [2022-03-03 19:12:01,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,564 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 19:12:01,564 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 19:12:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-03 19:12:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2022-03-03 19:12:01,567 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 19:12:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:01,567 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:01,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,567 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:01,568 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 19:12:01,568 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,568 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,568 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 19:12:01,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-03 19:12:01,568 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1915840751, now seen corresponding path program 70 times [2022-03-03 19:12:01,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038714515] [2022-03-03 19:12:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,614 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 19:12:01,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038714515] [2022-03-03 19:12:01,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038714515] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,615 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912152812] [2022-03-03 19:12:01,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,615 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 19:12:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,743 INFO L93 Difference]: Finished difference Result 393 states and 1085 transitions. [2022-03-03 19:12:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,743 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 19:12:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,744 INFO L225 Difference]: With dead ends: 393 [2022-03-03 19:12:01,744 INFO L226 Difference]: Without dead ends: 378 [2022-03-03 19:12:01,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,744 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:01,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 78 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-03-03 19:12:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 199. [2022-03-03 19:12:01,751 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 19:12:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-03-03 19:12:01,752 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-03-03 19:12:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,752 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-03-03 19:12:01,752 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 19:12:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-03-03 19:12:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,752 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,752 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 19:12:01,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-03 19:12:01,752 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash -520481395, now seen corresponding path program 71 times [2022-03-03 19:12:01,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9505079] [2022-03-03 19:12:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,790 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 19:12:01,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9505079] [2022-03-03 19:12:01,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9505079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369177226] [2022-03-03 19:12:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,791 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 19:12:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:01,915 INFO L93 Difference]: Finished difference Result 391 states and 1089 transitions. [2022-03-03 19:12:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:01,915 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 19:12:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:01,916 INFO L225 Difference]: With dead ends: 391 [2022-03-03 19:12:01,916 INFO L226 Difference]: Without dead ends: 376 [2022-03-03 19:12:01,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:01,916 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 77 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 19:12:01,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 77 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-03 19:12:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2022-03-03 19:12:01,919 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 19:12:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2022-03-03 19:12:01,920 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2022-03-03 19:12:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:01,920 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2022-03-03 19:12:01,920 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 19:12:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2022-03-03 19:12:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:01,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:01,920 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 19:12:01,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-03 19:12:01,920 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash -497884847, now seen corresponding path program 72 times [2022-03-03 19:12:01,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:01,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962353481] [2022-03-03 19:12:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:01,977 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 19:12:01,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:01,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962353481] [2022-03-03 19:12:01,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962353481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:01,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:01,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:01,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215057861] [2022-03-03 19:12:01,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:01,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:01,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:01,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:01,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:01,979 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 19:12:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,065 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2022-03-03 19:12:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,065 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 19:12:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,066 INFO L225 Difference]: With dead ends: 368 [2022-03-03 19:12:02,066 INFO L226 Difference]: Without dead ends: 353 [2022-03-03 19:12:02,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:02,066 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 75 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 19:12:02,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 75 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-03 19:12:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 196. [2022-03-03 19:12:02,069 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 19:12:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:02,070 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,070 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:02,070 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 19:12:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,071 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 19:12:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-03 19:12:02,071 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1662051727, now seen corresponding path program 73 times [2022-03-03 19:12:02,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997695612] [2022-03-03 19:12:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,135 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 19:12:02,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997695612] [2022-03-03 19:12:02,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997695612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712824222] [2022-03-03 19:12:02,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,136 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 19:12:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,264 INFO L93 Difference]: Finished difference Result 445 states and 1229 transitions. [2022-03-03 19:12:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,264 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 19:12:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,265 INFO L225 Difference]: With dead ends: 445 [2022-03-03 19:12:02,265 INFO L226 Difference]: Without dead ends: 430 [2022-03-03 19:12:02,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,265 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 80 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-03-03 19:12:02,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 199. [2022-03-03 19:12:02,271 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 19:12:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:02,271 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,271 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:02,271 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 19:12:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:02,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,272 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 19:12:02,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-03 19:12:02,272 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash 322899093, now seen corresponding path program 74 times [2022-03-03 19:12:02,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685835937] [2022-03-03 19:12:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,315 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 19:12:02,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685835937] [2022-03-03 19:12:02,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685835937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706134946] [2022-03-03 19:12:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,316 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 19:12:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,435 INFO L93 Difference]: Finished difference Result 443 states and 1222 transitions. [2022-03-03 19:12:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,436 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 19:12:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,436 INFO L225 Difference]: With dead ends: 443 [2022-03-03 19:12:02,437 INFO L226 Difference]: Without dead ends: 428 [2022-03-03 19:12:02,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,437 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 81 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 19:12:02,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 81 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-03 19:12:02,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 197. [2022-03-03 19:12:02,440 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 19:12:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:02,440 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,440 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:02,440 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 19:12:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,441 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 19:12:02,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-03 19:12:02,441 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1444296045, now seen corresponding path program 75 times [2022-03-03 19:12:02,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409826912] [2022-03-03 19:12:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,483 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 19:12:02,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409826912] [2022-03-03 19:12:02,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409826912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,483 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8749066] [2022-03-03 19:12:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,484 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 19:12:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,603 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-03-03 19:12:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,603 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 19:12:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,604 INFO L225 Difference]: With dead ends: 437 [2022-03-03 19:12:02,604 INFO L226 Difference]: Without dead ends: 422 [2022-03-03 19:12:02,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,606 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 82 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 19:12:02,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 82 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-03 19:12:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 200. [2022-03-03 19:12:02,609 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 19:12:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-03-03 19:12:02,610 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-03-03 19:12:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,610 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-03-03 19:12:02,610 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 19:12:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-03-03 19:12:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,610 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,610 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 19:12:02,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-03 19:12:02,611 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash 484155377, now seen corresponding path program 76 times [2022-03-03 19:12:02,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898137817] [2022-03-03 19:12:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,650 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 19:12:02,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898137817] [2022-03-03 19:12:02,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898137817] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724078651] [2022-03-03 19:12:02,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,651 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 19:12:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,764 INFO L93 Difference]: Finished difference Result 421 states and 1178 transitions. [2022-03-03 19:12:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,765 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 19:12:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,765 INFO L225 Difference]: With dead ends: 421 [2022-03-03 19:12:02,765 INFO L226 Difference]: Without dead ends: 406 [2022-03-03 19:12:02,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,765 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 79 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-03-03 19:12:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 197. [2022-03-03 19:12:02,768 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 19:12:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:02,769 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,769 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:02,769 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 19:12:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,769 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,769 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 19:12:02,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-03 19:12:02,769 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash -813204911, now seen corresponding path program 77 times [2022-03-03 19:12:02,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923957597] [2022-03-03 19:12:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,806 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 19:12:02,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923957597] [2022-03-03 19:12:02,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923957597] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493626529] [2022-03-03 19:12:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,808 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 19:12:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:02,911 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2022-03-03 19:12:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:02,912 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 19:12:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:02,912 INFO L225 Difference]: With dead ends: 405 [2022-03-03 19:12:02,912 INFO L226 Difference]: Without dead ends: 390 [2022-03-03 19:12:02,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:02,913 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:02,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-03 19:12:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 199. [2022-03-03 19:12:02,915 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 19:12:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:02,916 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:02,916 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:02,916 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 19:12:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:02,916 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:02,916 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 19:12:02,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-03 19:12:02,917 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash 533925845, now seen corresponding path program 78 times [2022-03-03 19:12:02,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:02,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877845059] [2022-03-03 19:12:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:02,959 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 19:12:02,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:02,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877845059] [2022-03-03 19:12:02,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877845059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:02,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:02,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:02,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611640646] [2022-03-03 19:12:02,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:02,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:02,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:02,960 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 19:12:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,032 INFO L93 Difference]: Finished difference Result 384 states and 1091 transitions. [2022-03-03 19:12:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,032 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 19:12:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,032 INFO L225 Difference]: With dead ends: 384 [2022-03-03 19:12:03,032 INFO L226 Difference]: Without dead ends: 369 [2022-03-03 19:12:03,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:03,033 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-03 19:12:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 195. [2022-03-03 19:12:03,036 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 19:12:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:03,036 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,036 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:03,036 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 19:12:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,037 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 19:12:03,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-03 19:12:03,037 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash -635821033, now seen corresponding path program 79 times [2022-03-03 19:12:03,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926102026] [2022-03-03 19:12:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,091 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 19:12:03,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926102026] [2022-03-03 19:12:03,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926102026] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565300857] [2022-03-03 19:12:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,092 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 19:12:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,204 INFO L93 Difference]: Finished difference Result 425 states and 1163 transitions. [2022-03-03 19:12:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,205 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 19:12:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,205 INFO L225 Difference]: With dead ends: 425 [2022-03-03 19:12:03,205 INFO L226 Difference]: Without dead ends: 410 [2022-03-03 19:12:03,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:03,206 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-03 19:12:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 200. [2022-03-03 19:12:03,209 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 19:12:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-03-03 19:12:03,209 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-03-03 19:12:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,209 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-03-03 19:12:03,209 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 19:12:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-03-03 19:12:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,210 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 19:12:03,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-03 19:12:03,210 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1349129787, now seen corresponding path program 80 times [2022-03-03 19:12:03,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77692863] [2022-03-03 19:12:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,253 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 19:12:03,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77692863] [2022-03-03 19:12:03,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77692863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146493078] [2022-03-03 19:12:03,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,254 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 19:12:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,365 INFO L93 Difference]: Finished difference Result 429 states and 1169 transitions. [2022-03-03 19:12:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,365 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 19:12:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,366 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:12:03,366 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:12:03,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:03,366 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:12:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 198. [2022-03-03 19:12:03,369 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 19:12:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-03-03 19:12:03,370 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-03-03 19:12:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,370 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-03-03 19:12:03,370 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 19:12:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-03-03 19:12:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,370 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 19:12:03,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-03 19:12:03,370 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash -259185395, now seen corresponding path program 81 times [2022-03-03 19:12:03,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379851981] [2022-03-03 19:12:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,411 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 19:12:03,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379851981] [2022-03-03 19:12:03,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379851981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971927288] [2022-03-03 19:12:03,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,413 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 19:12:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,552 INFO L93 Difference]: Finished difference Result 429 states and 1163 transitions. [2022-03-03 19:12:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,553 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 19:12:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,553 INFO L225 Difference]: With dead ends: 429 [2022-03-03 19:12:03,553 INFO L226 Difference]: Without dead ends: 414 [2022-03-03 19:12:03,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:03,554 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-03 19:12:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 196. [2022-03-03 19:12:03,557 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 19:12:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:03,557 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,557 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:03,557 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 19:12:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,559 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 19:12:03,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-03 19:12:03,559 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 520486939, now seen corresponding path program 82 times [2022-03-03 19:12:03,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578882640] [2022-03-03 19:12:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,607 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 19:12:03,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578882640] [2022-03-03 19:12:03,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578882640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924758558] [2022-03-03 19:12:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,608 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 19:12:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,719 INFO L93 Difference]: Finished difference Result 451 states and 1224 transitions. [2022-03-03 19:12:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,719 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 19:12:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,720 INFO L225 Difference]: With dead ends: 451 [2022-03-03 19:12:03,720 INFO L226 Difference]: Without dead ends: 436 [2022-03-03 19:12:03,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:03,720 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 19:12:03,720 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 19:12:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-03-03 19:12:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 199. [2022-03-03 19:12:03,723 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 19:12:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:03,723 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,723 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:03,724 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 19:12:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,724 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 19:12:03,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-03 19:12:03,724 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1789529537, now seen corresponding path program 83 times [2022-03-03 19:12:03,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437410549] [2022-03-03 19:12:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,766 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 19:12:03,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437410549] [2022-03-03 19:12:03,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437410549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589126249] [2022-03-03 19:12:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,767 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 19:12:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,849 INFO L93 Difference]: Finished difference Result 455 states and 1230 transitions. [2022-03-03 19:12:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,849 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 19:12:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,850 INFO L225 Difference]: With dead ends: 455 [2022-03-03 19:12:03,850 INFO L226 Difference]: Without dead ends: 440 [2022-03-03 19:12:03,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:03,851 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 96 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:03,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 78 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-03 19:12:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 197. [2022-03-03 19:12:03,854 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 19:12:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:03,854 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 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 197 states and 575 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 197 states and 575 transitions. [2022-03-03 19:12:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,855 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 19:12:03,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-03 19:12:03,855 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,855 INFO L85 PathProgramCache]: Analyzing trace with hash -668132585, now seen corresponding path program 84 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 [2144815166] [2022-03-03 19:12:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:03,912 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 19:12:03,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:03,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144815166] [2022-03-03 19:12:03,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144815166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:03,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:03,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:03,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785580250] [2022-03-03 19:12:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:03,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:03,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:03,913 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 19:12:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:03,988 INFO L93 Difference]: Finished difference Result 422 states and 1158 transitions. [2022-03-03 19:12:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:03,988 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 19:12:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:03,989 INFO L225 Difference]: With dead ends: 422 [2022-03-03 19:12:03,989 INFO L226 Difference]: Without dead ends: 407 [2022-03-03 19:12:03,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:03,989 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 75 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 19:12:03,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 75 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-03-03 19:12:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 200. [2022-03-03 19:12:03,992 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 19:12:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-03-03 19:12:03,993 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-03-03 19:12:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:03,993 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-03-03 19:12:03,993 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 19:12:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-03-03 19:12:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:03,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:03,993 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 19:12:03,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-03 19:12:03,993 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1628273253, now seen corresponding path program 85 times [2022-03-03 19:12:03,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:03,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017367492] [2022-03-03 19:12:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,030 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 19:12:04,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017367492] [2022-03-03 19:12:04,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017367492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422984280] [2022-03-03 19:12:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,031 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 19:12:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,139 INFO L93 Difference]: Finished difference Result 406 states and 1135 transitions. [2022-03-03 19:12:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,139 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 19:12:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,140 INFO L225 Difference]: With dead ends: 406 [2022-03-03 19:12:04,140 INFO L226 Difference]: Without dead ends: 391 [2022-03-03 19:12:04,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,141 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 81 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 19:12:04,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 81 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-03-03 19:12:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 197. [2022-03-03 19:12:04,143 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 19:12:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-03-03 19:12:04,144 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-03-03 19:12:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,144 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-03-03 19:12:04,144 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 19:12:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-03-03 19:12:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,144 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 19:12:04,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-03 19:12:04,145 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1369333755, now seen corresponding path program 86 times [2022-03-03 19:12:04,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008619410] [2022-03-03 19:12:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,193 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 19:12:04,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008619410] [2022-03-03 19:12:04,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008619410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,194 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388176233] [2022-03-03 19:12:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,194 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 19:12:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,300 INFO L93 Difference]: Finished difference Result 440 states and 1205 transitions. [2022-03-03 19:12:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,301 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 19:12:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,301 INFO L225 Difference]: With dead ends: 440 [2022-03-03 19:12:04,301 INFO L226 Difference]: Without dead ends: 425 [2022-03-03 19:12:04,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,302 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 75 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 19:12:04,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 75 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-03 19:12:04,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 199. [2022-03-03 19:12:04,305 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 19:12:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-03-03 19:12:04,305 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-03-03 19:12:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,305 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-03-03 19:12:04,305 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 19:12:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-03-03 19:12:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,306 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 19:12:04,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-03 19:12:04,306 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1578502785, now seen corresponding path program 87 times [2022-03-03 19:12:04,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914269580] [2022-03-03 19:12:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,348 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 19:12:04,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914269580] [2022-03-03 19:12:04,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914269580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692496634] [2022-03-03 19:12:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,349 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 19:12:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,451 INFO L93 Difference]: Finished difference Result 419 states and 1167 transitions. [2022-03-03 19:12:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,451 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 19:12:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,451 INFO L225 Difference]: With dead ends: 419 [2022-03-03 19:12:04,451 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 19:12:04,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:04,452 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 19:12:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 196. [2022-03-03 19:12:04,455 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 19:12:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-03-03 19:12:04,455 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-03-03 19:12:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,455 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-03-03 19:12:04,455 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 19:12:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-03-03 19:12:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,456 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 19:12:04,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-03 19:12:04,456 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1118671151, now seen corresponding path program 88 times [2022-03-03 19:12:04,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143681500] [2022-03-03 19:12:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,492 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 19:12:04,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143681500] [2022-03-03 19:12:04,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143681500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,493 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259312138] [2022-03-03 19:12:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,493 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 19:12:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,602 INFO L93 Difference]: Finished difference Result 382 states and 1052 transitions. [2022-03-03 19:12:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,602 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 19:12:04,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,603 INFO L225 Difference]: With dead ends: 382 [2022-03-03 19:12:04,603 INFO L226 Difference]: Without dead ends: 367 [2022-03-03 19:12:04,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:04,603 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 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 19:12:04,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-03 19:12:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 198. [2022-03-03 19:12:04,606 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 19:12:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-03-03 19:12:04,606 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-03-03 19:12:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,606 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-03-03 19:12:04,606 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 19:12:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-03-03 19:12:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,606 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 19:12:04,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-03 19:12:04,607 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1966670413, now seen corresponding path program 89 times [2022-03-03 19:12:04,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541607706] [2022-03-03 19:12:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,648 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 19:12:04,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541607706] [2022-03-03 19:12:04,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541607706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131748086] [2022-03-03 19:12:04,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,649 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 19:12:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,767 INFO L93 Difference]: Finished difference Result 383 states and 1063 transitions. [2022-03-03 19:12:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,767 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 19:12:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,768 INFO L225 Difference]: With dead ends: 383 [2022-03-03 19:12:04,768 INFO L226 Difference]: Without dead ends: 368 [2022-03-03 19:12:04,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:04,768 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 81 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-03 19:12:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 200. [2022-03-03 19:12:04,771 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 19:12:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-03-03 19:12:04,771 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-03-03 19:12:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,771 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-03-03 19:12:04,771 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 19:12:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-03-03 19:12:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 19:12:04,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,772 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 19:12:04,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-03 19:12:04,772 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -981166127, now seen corresponding path program 90 times [2022-03-03 19:12:04,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530289384] [2022-03-03 19:12:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,822 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 19:12:04,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530289384] [2022-03-03 19:12:04,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530289384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:12:04,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:12:04,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 19:12:04,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895673250] [2022-03-03 19:12:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:04,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:04,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 19:12:04,825 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 19:12:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:04,918 INFO L93 Difference]: Finished difference Result 362 states and 1025 transitions. [2022-03-03 19:12:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:04,918 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 19:12:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:04,919 INFO L225 Difference]: With dead ends: 362 [2022-03-03 19:12:04,919 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:12:04,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:04,919 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:04,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 80 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:12:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 195. [2022-03-03 19:12:04,922 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 19:12:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-03-03 19:12:04,922 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-03-03 19:12:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:04,922 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-03-03 19:12:04,922 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 19:12:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-03-03 19:12:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:04,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:04,923 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 19:12:04,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-03 19:12:04,923 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:04,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:04,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1951800714, now seen corresponding path program 1 times [2022-03-03 19:12:04,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:04,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766205106] [2022-03-03 19:12:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:04,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:04,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766205106] [2022-03-03 19:12:04,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766205106] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:04,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140661855] [2022-03-03 19:12:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:04,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:04,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:04,995 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 19:12:04,996 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 19:12:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:05,375 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 19:12:05,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140661855] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:05,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:05,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2022-03-03 19:12:05,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300828013] [2022-03-03 19:12:05,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:05,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:05,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:05,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:05,376 INFO L87 Difference]: Start difference. First operand 195 states and 564 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 19:12:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:05,524 INFO L93 Difference]: Finished difference Result 365 states and 1007 transitions. [2022-03-03 19:12:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:05,525 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 19:12:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:05,525 INFO L225 Difference]: With dead ends: 365 [2022-03-03 19:12:05,525 INFO L226 Difference]: Without dead ends: 325 [2022-03-03 19:12:05,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:12:05,526 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:05,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 60 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-03 19:12:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 200. [2022-03-03 19:12:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.899497487437186) internal successors, (577), 199 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 577 transitions. [2022-03-03 19:12:05,529 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 577 transitions. Word has length 18 [2022-03-03 19:12:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:05,529 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 577 transitions. [2022-03-03 19:12:05,529 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 19:12:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 577 transitions. [2022-03-03 19:12:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:05,529 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:05,530 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 19:12:05,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-03 19:12:05,736 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,SelfDestructingSolverStorable122 [2022-03-03 19:12:05,736 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:05,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash 690829094, now seen corresponding path program 1 times [2022-03-03 19:12:05,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:05,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697993829] [2022-03-03 19:12:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,801 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 19:12:05,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:05,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697993829] [2022-03-03 19:12:05,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697993829] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:05,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090769288] [2022-03-03 19:12:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:05,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:05,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:05,803 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 19:12:05,804 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 19:12:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:05,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:05,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:05,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:06,029 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 19:12:06,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090769288] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:06,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:06,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2022-03-03 19:12:06,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869543882] [2022-03-03 19:12:06,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:06,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:06,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:06,031 INFO L87 Difference]: Start difference. First operand 200 states and 577 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:06,125 INFO L93 Difference]: Finished difference Result 372 states and 1038 transitions. [2022-03-03 19:12:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:06,126 INFO L225 Difference]: With dead ends: 372 [2022-03-03 19:12:06,126 INFO L226 Difference]: Without dead ends: 313 [2022-03-03 19:12:06,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:06,126 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:06,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 44 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-03 19:12:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 218. [2022-03-03 19:12:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.866359447004608) internal successors, (622), 217 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 19:12:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 622 transitions. [2022-03-03 19:12:06,130 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 622 transitions. Word has length 18 [2022-03-03 19:12:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:06,130 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 622 transitions. [2022-03-03 19:12:06,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 622 transitions. [2022-03-03 19:12:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:06,131 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:06,131 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 19:12:06,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-03 19:12:06,347 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,SelfDestructingSolverStorable123 [2022-03-03 19:12:06,347 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1211921590, now seen corresponding path program 2 times [2022-03-03 19:12:06,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:06,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920459248] [2022-03-03 19:12:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:06,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:06,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920459248] [2022-03-03 19:12:06,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920459248] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:06,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435982232] [2022-03-03 19:12:06,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:06,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:06,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:06,451 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 19:12:06,475 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 19:12:06,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:06,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:06,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:06,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:06,581 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 19:12:06,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:06,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435982232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:06,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:06,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2022-03-03 19:12:06,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41022801] [2022-03-03 19:12:06,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:06,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:06,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:06,670 INFO L87 Difference]: Start difference. First operand 218 states and 622 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:07,135 INFO L93 Difference]: Finished difference Result 668 states and 1857 transitions. [2022-03-03 19:12:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:12:07,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 19:12:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:07,136 INFO L225 Difference]: With dead ends: 668 [2022-03-03 19:12:07,136 INFO L226 Difference]: Without dead ends: 569 [2022-03-03 19:12:07,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:07,136 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 246 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:07,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 247 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:12:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-03-03 19:12:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 246. [2022-03-03 19:12:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.987755102040816) internal successors, (732), 245 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 732 transitions. [2022-03-03 19:12:07,141 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 732 transitions. Word has length 18 [2022-03-03 19:12:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:07,141 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 732 transitions. [2022-03-03 19:12:07,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 732 transitions. [2022-03-03 19:12:07,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:07,142 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:07,142 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 19:12:07,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:07,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:07,352 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -617870236, now seen corresponding path program 3 times [2022-03-03 19:12:07,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:07,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306581076] [2022-03-03 19:12:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:07,427 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 19:12:07,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:07,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306581076] [2022-03-03 19:12:07,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306581076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:07,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541586270] [2022-03-03 19:12:07,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:07,430 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 19:12:07,431 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 19:12:07,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:07,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:07,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:07,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:07,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:07,670 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 19:12:07,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541586270] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:07,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:07,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 15 [2022-03-03 19:12:07,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950135018] [2022-03-03 19:12:07,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:07,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:07,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:07,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:07,671 INFO L87 Difference]: Start difference. First operand 246 states and 732 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:07,765 INFO L93 Difference]: Finished difference Result 468 states and 1299 transitions. [2022-03-03 19:12:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:07,766 INFO L225 Difference]: With dead ends: 468 [2022-03-03 19:12:07,766 INFO L226 Difference]: Without dead ends: 419 [2022-03-03 19:12:07,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:07,767 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:07,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 52 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-03-03 19:12:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 248. [2022-03-03 19:12:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.9635627530364372) internal successors, (732), 247 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 732 transitions. [2022-03-03 19:12:07,771 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 732 transitions. Word has length 18 [2022-03-03 19:12:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:07,771 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 732 transitions. [2022-03-03 19:12:07,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 732 transitions. [2022-03-03 19:12:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:07,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:07,772 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 19:12:07,788 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 19:12:07,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-03 19:12:07,986 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 267033866, now seen corresponding path program 4 times [2022-03-03 19:12:07,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:07,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944670214] [2022-03-03 19:12:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:08,060 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 19:12:08,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:08,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944670214] [2022-03-03 19:12:08,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944670214] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:08,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603686445] [2022-03-03 19:12:08,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:08,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:08,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:08,061 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 19:12:08,062 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 19:12:08,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:08,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:08,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:08,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:08,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:08,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603686445] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:08,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:08,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-03-03 19:12:08,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008932145] [2022-03-03 19:12:08,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:08,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 19:12:08,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 19:12:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:08,397 INFO L87 Difference]: Start difference. First operand 248 states and 732 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:08,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:08,746 INFO L93 Difference]: Finished difference Result 470 states and 1309 transitions. [2022-03-03 19:12:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:08,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have 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 19:12:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:08,747 INFO L225 Difference]: With dead ends: 470 [2022-03-03 19:12:08,747 INFO L226 Difference]: Without dead ends: 430 [2022-03-03 19:12:08,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:12:08,747 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 177 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:08,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 135 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:08,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-03-03 19:12:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 251. [2022-03-03 19:12:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 2.948) internal successors, (737), 250 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 19:12:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 737 transitions. [2022-03-03 19:12:08,752 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 737 transitions. Word has length 18 [2022-03-03 19:12:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:08,752 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 737 transitions. [2022-03-03 19:12:08,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 737 transitions. [2022-03-03 19:12:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:08,752 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:08,752 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 19:12:08,771 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 19:12:08,970 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,SelfDestructingSolverStorable126 [2022-03-03 19:12:08,971 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash -624176268, now seen corresponding path program 5 times [2022-03-03 19:12:08,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:08,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495467645] [2022-03-03 19:12:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:09,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495467645] [2022-03-03 19:12:09,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495467645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:09,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846794773] [2022-03-03 19:12:09,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:09,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:09,071 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 19:12:09,100 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 19:12:09,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:09,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:09,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:09,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846794773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:09,357 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:09,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-03-03 19:12:09,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830043922] [2022-03-03 19:12:09,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:09,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 19:12:09,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:09,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 19:12:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:09,358 INFO L87 Difference]: Start difference. First operand 251 states and 737 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:09,644 INFO L93 Difference]: Finished difference Result 441 states and 1216 transitions. [2022-03-03 19:12:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have 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 19:12:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:09,646 INFO L225 Difference]: With dead ends: 441 [2022-03-03 19:12:09,646 INFO L226 Difference]: Without dead ends: 410 [2022-03-03 19:12:09,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:12:09,648 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 132 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:09,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 139 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-03 19:12:09,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2022-03-03 19:12:09,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.932806324110672) internal successors, (742), 253 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 19:12:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 742 transitions. [2022-03-03 19:12:09,655 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 742 transitions. Word has length 18 [2022-03-03 19:12:09,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:09,656 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 742 transitions. [2022-03-03 19:12:09,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 742 transitions. [2022-03-03 19:12:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:09,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:09,656 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 19:12:09,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:09,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:09,861 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -30124914, now seen corresponding path program 6 times [2022-03-03 19:12:09,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:09,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582016517] [2022-03-03 19:12:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:09,928 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:09,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582016517] [2022-03-03 19:12:09,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582016517] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:09,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764401715] [2022-03-03 19:12:09,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:09,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:09,929 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 19:12:09,930 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 19:12:09,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:09,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:09,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:09,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:10,127 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 19:12:10,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764401715] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:10,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:10,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 15 [2022-03-03 19:12:10,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280148076] [2022-03-03 19:12:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:10,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:10,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:10,128 INFO L87 Difference]: Start difference. First operand 254 states and 742 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:10,218 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2022-03-03 19:12:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:10,219 INFO L225 Difference]: With dead ends: 368 [2022-03-03 19:12:10,219 INFO L226 Difference]: Without dead ends: 314 [2022-03-03 19:12:10,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:10,219 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:10,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 37 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-03-03 19:12:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 248. [2022-03-03 19:12:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0040485829959516) internal successors, (742), 247 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 19:12:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 742 transitions. [2022-03-03 19:12:10,223 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 742 transitions. Word has length 18 [2022-03-03 19:12:10,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:10,223 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 742 transitions. [2022-03-03 19:12:10,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 742 transitions. [2022-03-03 19:12:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:10,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:10,223 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 19:12:10,240 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 19:12:10,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:10,431 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1478642185, now seen corresponding path program 1 times [2022-03-03 19:12:10,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:10,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143203405] [2022-03-03 19:12:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:10,481 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 19:12:10,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:10,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143203405] [2022-03-03 19:12:10,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143203405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:10,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875700464] [2022-03-03 19:12:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:10,483 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 19:12:10,483 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 19:12:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:10,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:10,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:10,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875700464] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:10,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:10,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-03 19:12:10,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525102821] [2022-03-03 19:12:10,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:10,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:10,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:10,725 INFO L87 Difference]: Start difference. First operand 248 states and 742 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 19:12:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:10,885 INFO L93 Difference]: Finished difference Result 454 states and 1329 transitions. [2022-03-03 19:12:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:10,885 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 19:12:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:10,886 INFO L225 Difference]: With dead ends: 454 [2022-03-03 19:12:10,886 INFO L226 Difference]: Without dead ends: 435 [2022-03-03 19:12:10,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:10,891 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 122 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:10,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 119 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-03-03 19:12:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 261. [2022-03-03 19:12:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.042307692307692) internal successors, (791), 260 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 791 transitions. [2022-03-03 19:12:10,896 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 791 transitions. Word has length 18 [2022-03-03 19:12:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:10,896 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 791 transitions. [2022-03-03 19:12:10,896 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 19:12:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 791 transitions. [2022-03-03 19:12:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:10,896 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:10,897 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 19:12:10,917 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 19:12:11,111 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,SelfDestructingSolverStorable129 [2022-03-03 19:12:11,111 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash -711139859, now seen corresponding path program 2 times [2022-03-03 19:12:11,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:11,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464617310] [2022-03-03 19:12:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:11,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:11,132 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 19:12:11,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:11,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464617310] [2022-03-03 19:12:11,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464617310] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:11,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192863500] [2022-03-03 19:12:11,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:11,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:11,134 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 19:12:11,135 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 19:12:11,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:11,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:11,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:11,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192863500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:11,294 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:11,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-03-03 19:12:11,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766112022] [2022-03-03 19:12:11,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:11,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 19:12:11,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 19:12:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:12:11,295 INFO L87 Difference]: Start difference. First operand 261 states and 791 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:11,379 INFO L93 Difference]: Finished difference Result 437 states and 1302 transitions. [2022-03-03 19:12:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:11,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have 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 19:12:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:11,379 INFO L225 Difference]: With dead ends: 437 [2022-03-03 19:12:11,380 INFO L226 Difference]: Without dead ends: 393 [2022-03-03 19:12:11,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:11,380 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:11,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 46 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-03-03 19:12:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 277. [2022-03-03 19:12:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.0543478260869565) internal successors, (843), 276 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 843 transitions. [2022-03-03 19:12:11,384 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 843 transitions. Word has length 18 [2022-03-03 19:12:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:11,384 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 843 transitions. [2022-03-03 19:12:11,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 843 transitions. [2022-03-03 19:12:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:11,384 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:11,384 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 19:12:11,411 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 19:12:11,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:11,585 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1138956040, now seen corresponding path program 7 times [2022-03-03 19:12:11,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:11,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67836950] [2022-03-03 19:12:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:11,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:11,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67836950] [2022-03-03 19:12:11,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67836950] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:11,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195356716] [2022-03-03 19:12:11,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:11,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:11,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:11,654 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 19:12:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:11,681 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 19:12:11,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:11,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:11,786 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 19:12:11,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:11,932 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 19:12:11,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195356716] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:11,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:11,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:11,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730838570] [2022-03-03 19:12:11,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:11,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:11,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:11,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:11,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:11,933 INFO L87 Difference]: Start difference. First operand 277 states and 843 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 19:12:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:12,113 INFO L93 Difference]: Finished difference Result 557 states and 1551 transitions. [2022-03-03 19:12:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:12,113 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 19:12:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:12,114 INFO L225 Difference]: With dead ends: 557 [2022-03-03 19:12:12,114 INFO L226 Difference]: Without dead ends: 517 [2022-03-03 19:12:12,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:12,114 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:12,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 83 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-03-03 19:12:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 284. [2022-03-03 19:12:12,118 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 19:12:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 866 transitions. [2022-03-03 19:12:12,119 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 866 transitions. Word has length 18 [2022-03-03 19:12:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:12,119 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 866 transitions. [2022-03-03 19:12:12,119 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 19:12:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 866 transitions. [2022-03-03 19:12:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:12,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:12,120 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 19:12:12,149 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 19:12:12,332 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,SelfDestructingSolverStorable131 [2022-03-03 19:12:12,332 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash -122015580, now seen corresponding path program 2 times [2022-03-03 19:12:12,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:12,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462695783] [2022-03-03 19:12:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:12,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462695783] [2022-03-03 19:12:12,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462695783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:12,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168348828] [2022-03-03 19:12:12,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:12,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:12,395 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 19:12:12,397 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 19:12:12,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:12,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:12,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:12,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:12,596 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 19:12:12,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168348828] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:12,597 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:12,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-03-03 19:12:12,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722730829] [2022-03-03 19:12:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:12,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:12,597 INFO L87 Difference]: Start difference. First operand 284 states and 866 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:12,696 INFO L93 Difference]: Finished difference Result 566 states and 1626 transitions. [2022-03-03 19:12:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:12,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:12,697 INFO L225 Difference]: With dead ends: 566 [2022-03-03 19:12:12,697 INFO L226 Difference]: Without dead ends: 505 [2022-03-03 19:12:12,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:12,697 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:12,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 48 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-03 19:12:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 300. [2022-03-03 19:12:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.120401337792642) internal successors, (933), 299 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 933 transitions. [2022-03-03 19:12:12,702 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 933 transitions. Word has length 18 [2022-03-03 19:12:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:12,702 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 933 transitions. [2022-03-03 19:12:12,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:12,702 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 933 transitions. [2022-03-03 19:12:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:12,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:12,703 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 19:12:12,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-03 19:12:12,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:12,904 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:12,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1323652908, now seen corresponding path program 8 times [2022-03-03 19:12:12,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:12,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911364793] [2022-03-03 19:12:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:12,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:12,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911364793] [2022-03-03 19:12:12,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911364793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:12,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045479544] [2022-03-03 19:12:12,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:12,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:12,967 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 19:12:12,983 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 19:12:13,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:13,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:13,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:13,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:13,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:13,174 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 19:12:13,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045479544] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:13,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:13,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-03-03 19:12:13,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652771667] [2022-03-03 19:12:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:13,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:13,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:13,175 INFO L87 Difference]: Start difference. First operand 300 states and 933 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:13,270 INFO L93 Difference]: Finished difference Result 439 states and 1262 transitions. [2022-03-03 19:12:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:13,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:13,271 INFO L225 Difference]: With dead ends: 439 [2022-03-03 19:12:13,271 INFO L226 Difference]: Without dead ends: 381 [2022-03-03 19:12:13,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:13,271 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 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 19:12:13,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-03-03 19:12:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 296. [2022-03-03 19:12:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0406779661016947) internal successors, (897), 295 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 897 transitions. [2022-03-03 19:12:13,275 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 897 transitions. Word has length 18 [2022-03-03 19:12:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:13,275 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 897 transitions. [2022-03-03 19:12:13,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 897 transitions. [2022-03-03 19:12:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:13,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:13,276 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 19:12:13,299 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 19:12:13,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-03 19:12:13,492 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash -643487665, now seen corresponding path program 3 times [2022-03-03 19:12:13,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:13,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281771587] [2022-03-03 19:12:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:13,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:13,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281771587] [2022-03-03 19:12:13,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281771587] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:13,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970601226] [2022-03-03 19:12:13,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:13,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:13,551 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 19:12:13,552 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 19:12:13,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:13,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:13,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:13,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:13,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:13,770 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 19:12:13,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970601226] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:13,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:13,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:13,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25543999] [2022-03-03 19:12:13,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:13,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:13,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:13,771 INFO L87 Difference]: Start difference. First operand 296 states and 897 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 19:12:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:13,876 INFO L93 Difference]: Finished difference Result 438 states and 1244 transitions. [2022-03-03 19:12:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:13,877 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 19:12:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:13,877 INFO L225 Difference]: With dead ends: 438 [2022-03-03 19:12:13,877 INFO L226 Difference]: Without dead ends: 415 [2022-03-03 19:12:13,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:13,878 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:13,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 71 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-03 19:12:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 308. [2022-03-03 19:12:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.0) internal successors, (921), 307 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 921 transitions. [2022-03-03 19:12:13,882 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 921 transitions. Word has length 18 [2022-03-03 19:12:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:13,882 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 921 transitions. [2022-03-03 19:12:13,882 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 19:12:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 921 transitions. [2022-03-03 19:12:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:13,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:13,883 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 19:12:13,901 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 19:12:14,099 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,SelfDestructingSolverStorable134 [2022-03-03 19:12:14,099 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1235680749, now seen corresponding path program 4 times [2022-03-03 19:12:14,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:14,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180922706] [2022-03-03 19:12:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:14,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:14,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180922706] [2022-03-03 19:12:14,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180922706] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:14,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641238160] [2022-03-03 19:12:14,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:14,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:14,171 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 19:12:14,183 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 19:12:14,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:14,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:14,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:14,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641238160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:14,379 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:14,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-03 19:12:14,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521175998] [2022-03-03 19:12:14,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:14,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:14,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:14,380 INFO L87 Difference]: Start difference. First operand 308 states and 921 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 19:12:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:14,592 INFO L93 Difference]: Finished difference Result 413 states and 1192 transitions. [2022-03-03 19:12:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:14,592 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 19:12:14,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:14,593 INFO L225 Difference]: With dead ends: 413 [2022-03-03 19:12:14,593 INFO L226 Difference]: Without dead ends: 379 [2022-03-03 19:12:14,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:14,593 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 122 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:14,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 98 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-03 19:12:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 296. [2022-03-03 19:12:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0338983050847457) internal successors, (895), 295 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 895 transitions. [2022-03-03 19:12:14,597 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 895 transitions. Word has length 18 [2022-03-03 19:12:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:14,597 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 895 transitions. [2022-03-03 19:12:14,597 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 19:12:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 895 transitions. [2022-03-03 19:12:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:14,598 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:14,598 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 19:12:14,629 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 19:12:14,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:14,811 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash -34208214, now seen corresponding path program 3 times [2022-03-03 19:12:14,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:14,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877854573] [2022-03-03 19:12:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:14,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877854573] [2022-03-03 19:12:14,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877854573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:14,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748528466] [2022-03-03 19:12:14,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:14,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:14,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:14,853 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 19:12:14,854 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 19:12:14,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:14,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:14,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:14,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:14,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:15,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748528466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:15,136 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:15,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-03-03 19:12:15,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662662834] [2022-03-03 19:12:15,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:15,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:15,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:15,136 INFO L87 Difference]: Start difference. First operand 296 states and 895 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:15,319 INFO L93 Difference]: Finished difference Result 481 states and 1359 transitions. [2022-03-03 19:12:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:12:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 19:12:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:15,320 INFO L225 Difference]: With dead ends: 481 [2022-03-03 19:12:15,320 INFO L226 Difference]: Without dead ends: 403 [2022-03-03 19:12:15,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:15,321 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 140 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:15,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 106 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-03-03 19:12:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 294. [2022-03-03 19:12:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0204778156996586) internal successors, (885), 293 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 885 transitions. [2022-03-03 19:12:15,325 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 885 transitions. Word has length 18 [2022-03-03 19:12:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:15,325 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 885 transitions. [2022-03-03 19:12:15,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 885 transitions. [2022-03-03 19:12:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:15,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:15,325 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 19:12:15,341 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 19:12:15,526 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,SelfDestructingSolverStorable136 [2022-03-03 19:12:15,526 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:15,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1601323667, now seen corresponding path program 5 times [2022-03-03 19:12:15,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:15,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012765600] [2022-03-03 19:12:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:15,572 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 19:12:15,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:15,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012765600] [2022-03-03 19:12:15,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012765600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:15,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062217607] [2022-03-03 19:12:15,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:15,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:15,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:15,583 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 19:12:15,584 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 19:12:15,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:15,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:15,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:15,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:15,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:15,731 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 19:12:15,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062217607] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:15,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:15,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 10 [2022-03-03 19:12:15,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248483880] [2022-03-03 19:12:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:15,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:15,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:15,732 INFO L87 Difference]: Start difference. First operand 294 states and 885 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:15,816 INFO L93 Difference]: Finished difference Result 433 states and 1284 transitions. [2022-03-03 19:12:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:15,817 INFO L225 Difference]: With dead ends: 433 [2022-03-03 19:12:15,817 INFO L226 Difference]: Without dead ends: 390 [2022-03-03 19:12:15,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:15,817 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:15,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 33 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-03 19:12:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 320. [2022-03-03 19:12:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.0564263322884013) internal successors, (975), 319 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 975 transitions. [2022-03-03 19:12:15,821 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 975 transitions. Word has length 18 [2022-03-03 19:12:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:15,822 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 975 transitions. [2022-03-03 19:12:15,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 975 transitions. [2022-03-03 19:12:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:15,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:15,822 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 19:12:15,840 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 19:12:16,025 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,SelfDestructingSolverStorable137 [2022-03-03 19:12:16,025 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash 531772977, now seen corresponding path program 6 times [2022-03-03 19:12:16,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:16,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179335995] [2022-03-03 19:12:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:16,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:16,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179335995] [2022-03-03 19:12:16,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179335995] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:16,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663710494] [2022-03-03 19:12:16,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:16,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:16,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:16,084 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 19:12:16,092 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 19:12:16,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:16,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:16,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:16,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663710494] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:16,375 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:16,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-03-03 19:12:16,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457885961] [2022-03-03 19:12:16,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:16,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:16,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:16,376 INFO L87 Difference]: Start difference. First operand 320 states and 975 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 19:12:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:16,575 INFO L93 Difference]: Finished difference Result 618 states and 1767 transitions. [2022-03-03 19:12:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:12:16,576 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 19:12:16,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:16,576 INFO L225 Difference]: With dead ends: 618 [2022-03-03 19:12:16,577 INFO L226 Difference]: Without dead ends: 494 [2022-03-03 19:12:16,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:12:16,587 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 154 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:16,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 165 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-03-03 19:12:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 307. [2022-03-03 19:12:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.0326797385620914) internal successors, (928), 306 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 928 transitions. [2022-03-03 19:12:16,592 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 928 transitions. Word has length 18 [2022-03-03 19:12:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:16,592 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 928 transitions. [2022-03-03 19:12:16,592 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 19:12:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 928 transitions. [2022-03-03 19:12:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:16,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:16,593 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 19:12:16,614 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 19:12:16,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:16,800 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:16,800 INFO L85 PathProgramCache]: Analyzing trace with hash -90982872, now seen corresponding path program 9 times [2022-03-03 19:12:16,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:16,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933004149] [2022-03-03 19:12:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:16,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933004149] [2022-03-03 19:12:16,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933004149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:16,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238400932] [2022-03-03 19:12:16,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:16,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:16,856 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 19:12:16,887 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 19:12:16,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:16,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:16,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:16,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:16,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:17,014 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 19:12:17,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238400932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:17,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:17,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-03-03 19:12:17,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963292735] [2022-03-03 19:12:17,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:17,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 19:12:17,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:17,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 19:12:17,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:17,015 INFO L87 Difference]: Start difference. First operand 307 states and 928 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 19:12:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:17,378 INFO L93 Difference]: Finished difference Result 718 states and 2053 transitions. [2022-03-03 19:12:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:12:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 19:12:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:17,379 INFO L225 Difference]: With dead ends: 718 [2022-03-03 19:12:17,379 INFO L226 Difference]: Without dead ends: 592 [2022-03-03 19:12:17,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:12:17,379 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 197 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:17,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 182 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-03-03 19:12:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 310. [2022-03-03 19:12:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0226537216828477) internal successors, (934), 309 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 19:12:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 934 transitions. [2022-03-03 19:12:17,384 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 934 transitions. Word has length 18 [2022-03-03 19:12:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:17,384 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 934 transitions. [2022-03-03 19:12:17,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 19:12:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 934 transitions. [2022-03-03 19:12:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:17,385 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:17,385 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 19:12:17,404 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 19:12:17,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:17,588 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash 724975432, now seen corresponding path program 10 times [2022-03-03 19:12:17,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:17,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115493096] [2022-03-03 19:12:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:17,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:17,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115493096] [2022-03-03 19:12:17,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115493096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:17,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901594616] [2022-03-03 19:12:17,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:17,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:17,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:17,700 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 19:12:17,713 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 19:12:17,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:17,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:17,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:17,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:17,833 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 19:12:17,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:17,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901594616] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:17,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:17,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-03-03 19:12:17,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089070074] [2022-03-03 19:12:17,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:17,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 19:12:17,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 19:12:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:12:17,917 INFO L87 Difference]: Start difference. First operand 310 states and 934 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:18,064 INFO L93 Difference]: Finished difference Result 549 states and 1571 transitions. [2022-03-03 19:12:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:18,064 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have 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 19:12:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:18,065 INFO L225 Difference]: With dead ends: 549 [2022-03-03 19:12:18,065 INFO L226 Difference]: Without dead ends: 512 [2022-03-03 19:12:18,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-03-03 19:12:18,065 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 113 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:18,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 138 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-03-03 19:12:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 310. [2022-03-03 19:12:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0194174757281553) internal successors, (933), 309 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 933 transitions. [2022-03-03 19:12:18,070 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 933 transitions. Word has length 18 [2022-03-03 19:12:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:18,070 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 933 transitions. [2022-03-03 19:12:18,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 933 transitions. [2022-03-03 19:12:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:18,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:18,070 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 19:12:18,089 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 19:12:18,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:18,286 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash 632739358, now seen corresponding path program 11 times [2022-03-03 19:12:18,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:18,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521285429] [2022-03-03 19:12:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:18,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:18,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521285429] [2022-03-03 19:12:18,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521285429] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:18,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116770706] [2022-03-03 19:12:18,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:18,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:18,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:18,334 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 19:12:18,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:18,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:18,358 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 19:12:18,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:18,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:18,458 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 19:12:18,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:18,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116770706] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:18,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:18,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-03 19:12:18,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052646031] [2022-03-03 19:12:18,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:18,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:18,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:18,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:18,575 INFO L87 Difference]: Start difference. First operand 310 states and 933 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 552 states and 1552 transitions. [2022-03-03 19:12:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:18,769 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 19:12:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:18,770 INFO L225 Difference]: With dead ends: 552 [2022-03-03 19:12:18,770 INFO L226 Difference]: Without dead ends: 521 [2022-03-03 19:12:18,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-03 19:12:18,771 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 96 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:18,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 157 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:12:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-03-03 19:12:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 313. [2022-03-03 19:12:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 3.0288461538461537) internal successors, (945), 312 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (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 313 states to 313 states and 945 transitions. [2022-03-03 19:12:18,775 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 945 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 313 states and 945 transitions. [2022-03-03 19:12:18,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 313 states and 945 transitions. [2022-03-03 19:12:18,776 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 19:12:18,809 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 19:12:18,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:18,992 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1677277118, now seen corresponding path program 12 times [2022-03-03 19:12:18,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:18,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88342622] [2022-03-03 19:12:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:18,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:19,018 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 19:12:19,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:19,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88342622] [2022-03-03 19:12:19,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88342622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:19,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847178845] [2022-03-03 19:12:19,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:19,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:19,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:19,028 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 19:12:19,029 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 19:12:19,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:19,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:19,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:19,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:19,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:19,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847178845] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:19,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:19,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-03-03 19:12:19,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302258825] [2022-03-03 19:12:19,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:19,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:12:19,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:12:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:12:19,193 INFO L87 Difference]: Start difference. First operand 313 states and 945 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 19:12:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:19,271 INFO L93 Difference]: Finished difference Result 451 states and 1311 transitions. [2022-03-03 19:12:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:19,271 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 19:12:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:19,272 INFO L225 Difference]: With dead ends: 451 [2022-03-03 19:12:19,272 INFO L226 Difference]: Without dead ends: 402 [2022-03-03 19:12:19,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:19,272 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:19,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 50 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-03-03 19:12:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 275. [2022-03-03 19:12:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.9708029197080292) internal successors, (814), 274 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 19:12:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 814 transitions. [2022-03-03 19:12:19,276 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 814 transitions. Word has length 18 [2022-03-03 19:12:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:19,276 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 814 transitions. [2022-03-03 19:12:19,276 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 19:12:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 814 transitions. [2022-03-03 19:12:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:19,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:19,276 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 19:12:19,292 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 19:12:19,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:19,492 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:19,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:19,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1009718582, now seen corresponding path program 4 times [2022-03-03 19:12:19,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:19,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228365151] [2022-03-03 19:12:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:19,532 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 19:12:19,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:19,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228365151] [2022-03-03 19:12:19,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228365151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:19,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559893106] [2022-03-03 19:12:19,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:19,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:19,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:19,539 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 19:12:19,540 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 19:12:19,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:19,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:19,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:19,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:19,623 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 19:12:19,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:19,685 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 19:12:19,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559893106] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:19,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:19,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-03-03 19:12:19,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181431381] [2022-03-03 19:12:19,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:19,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:19,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:19,686 INFO L87 Difference]: Start difference. First operand 275 states and 814 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:19,766 INFO L93 Difference]: Finished difference Result 382 states and 1100 transitions. [2022-03-03 19:12:19,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:19,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:19,767 INFO L225 Difference]: With dead ends: 382 [2022-03-03 19:12:19,767 INFO L226 Difference]: Without dead ends: 321 [2022-03-03 19:12:19,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:19,768 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:19,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 39 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-03 19:12:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 285. [2022-03-03 19:12:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.943661971830986) internal successors, (836), 284 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 19:12:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 836 transitions. [2022-03-03 19:12:19,779 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 836 transitions. Word has length 18 [2022-03-03 19:12:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:19,780 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 836 transitions. [2022-03-03 19:12:19,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 836 transitions. [2022-03-03 19:12:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:19,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:19,780 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 19:12:19,811 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 19:12:19,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:19,991 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:19,991 INFO L85 PathProgramCache]: Analyzing trace with hash -921911216, now seen corresponding path program 5 times [2022-03-03 19:12:19,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:19,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836969569] [2022-03-03 19:12:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:20,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:20,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836969569] [2022-03-03 19:12:20,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836969569] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:20,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128475730] [2022-03-03 19:12:20,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:20,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:20,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:20,024 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 19:12:20,025 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 19:12:20,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:20,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:20,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:20,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:20,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:20,158 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 19:12:20,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128475730] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:20,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:20,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-03-03 19:12:20,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927300722] [2022-03-03 19:12:20,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:20,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 19:12:20,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 19:12:20,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:20,159 INFO L87 Difference]: Start difference. First operand 285 states and 836 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 19:12:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:20,264 INFO L93 Difference]: Finished difference Result 392 states and 1114 transitions. [2022-03-03 19:12:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 19:12:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:20,265 INFO L225 Difference]: With dead ends: 392 [2022-03-03 19:12:20,265 INFO L226 Difference]: Without dead ends: 337 [2022-03-03 19:12:20,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-03 19:12:20,265 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 73 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:20,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 74 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-03-03 19:12:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 274. [2022-03-03 19:12:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.93040293040293) internal successors, (800), 273 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 800 transitions. [2022-03-03 19:12:20,268 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 800 transitions. Word has length 18 [2022-03-03 19:12:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:20,269 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 800 transitions. [2022-03-03 19:12:20,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 19:12:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 800 transitions. [2022-03-03 19:12:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:20,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:20,269 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 19:12:20,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:20,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:20,484 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2033870275, now seen corresponding path program 7 times [2022-03-03 19:12:20,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:20,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22582393] [2022-03-03 19:12:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:20,541 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 19:12:20,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:20,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22582393] [2022-03-03 19:12:20,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22582393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:20,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203325740] [2022-03-03 19:12:20,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:20,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:20,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:20,556 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 19:12:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:20,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:20,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:20,580 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 19:12:20,636 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 19:12:20,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:20,704 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 19:12:20,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203325740] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:20,704 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:20,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:20,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492147176] [2022-03-03 19:12:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:20,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:20,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:20,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:20,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:20,705 INFO L87 Difference]: Start difference. First operand 274 states and 800 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 19:12:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:20,789 INFO L93 Difference]: Finished difference Result 374 states and 1011 transitions. [2022-03-03 19:12:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:20,790 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 19:12:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:20,790 INFO L225 Difference]: With dead ends: 374 [2022-03-03 19:12:20,790 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 19:12:20,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:20,791 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 83 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:20,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 55 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:12:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 19:12:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 276. [2022-03-03 19:12:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.92) internal successors, (803), 275 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 19:12:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 803 transitions. [2022-03-03 19:12:20,794 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 803 transitions. Word has length 18 [2022-03-03 19:12:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:20,795 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 803 transitions. [2022-03-03 19:12:20,795 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 19:12:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 803 transitions. [2022-03-03 19:12:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:20,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:20,795 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 19:12:20,812 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 19:12:20,995 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,SelfDestructingSolverStorable145 [2022-03-03 19:12:20,996 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash 824244543, now seen corresponding path program 8 times [2022-03-03 19:12:20,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:20,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759595749] [2022-03-03 19:12:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:21,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:21,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759595749] [2022-03-03 19:12:21,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759595749] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:21,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078221110] [2022-03-03 19:12:21,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:21,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:21,053 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 19:12:21,054 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 19:12:21,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:21,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:21,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:21,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:21,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:21,229 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 19:12:21,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078221110] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:21,229 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:21,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-03-03 19:12:21,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842140684] [2022-03-03 19:12:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:21,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 19:12:21,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 19:12:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:21,230 INFO L87 Difference]: Start difference. First operand 276 states and 803 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 19:12:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:21,326 INFO L93 Difference]: Finished difference Result 366 states and 993 transitions. [2022-03-03 19:12:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:21,326 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 19:12:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:21,327 INFO L225 Difference]: With dead ends: 366 [2022-03-03 19:12:21,327 INFO L226 Difference]: Without dead ends: 343 [2022-03-03 19:12:21,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:21,327 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:21,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 65 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:12:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-03 19:12:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 280. [2022-03-03 19:12:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.913978494623656) internal successors, (813), 279 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 19:12:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 813 transitions. [2022-03-03 19:12:21,331 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 813 transitions. Word has length 18 [2022-03-03 19:12:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:21,331 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 813 transitions. [2022-03-03 19:12:21,331 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 19:12:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 813 transitions. [2022-03-03 19:12:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:21,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:21,331 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 19:12:21,350 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 19:12:21,548 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,SelfDestructingSolverStorable146 [2022-03-03 19:12:21,548 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash 232051459, now seen corresponding path program 9 times [2022-03-03 19:12:21,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:21,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114279849] [2022-03-03 19:12:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:21,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:21,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:21,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114279849] [2022-03-03 19:12:21,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114279849] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:21,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177856356] [2022-03-03 19:12:21,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:21,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:21,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:21,620 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 19:12:21,625 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 19:12:21,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:21,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:21,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:21,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:21,755 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 19:12:21,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:21,854 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 19:12:21,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177856356] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:21,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:21,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-03 19:12:21,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108181823] [2022-03-03 19:12:21,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:21,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:21,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:21,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:21,855 INFO L87 Difference]: Start difference. First operand 280 states and 813 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:12:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:22,040 INFO L93 Difference]: Finished difference Result 341 states and 941 transitions. [2022-03-03 19:12:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 19:12:22,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:12:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:22,041 INFO L225 Difference]: With dead ends: 341 [2022-03-03 19:12:22,041 INFO L226 Difference]: Without dead ends: 305 [2022-03-03 19:12:22,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:12:22,041 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:22,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 103 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-03-03 19:12:22,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 270. [2022-03-03 19:12:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.9442379182156135) internal successors, (792), 269 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 792 transitions. [2022-03-03 19:12:22,044 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 792 transitions. Word has length 18 [2022-03-03 19:12:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:22,044 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 792 transitions. [2022-03-03 19:12:22,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 19:12:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 792 transitions. [2022-03-03 19:12:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:22,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:22,045 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 19:12:22,061 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 19:12:22,245 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,SelfDestructingSolverStorable147 [2022-03-03 19:12:22,246 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1675811136, now seen corresponding path program 6 times [2022-03-03 19:12:22,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:22,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761032764] [2022-03-03 19:12:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:22,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:22,289 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 19:12:22,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:22,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761032764] [2022-03-03 19:12:22,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761032764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:22,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882972079] [2022-03-03 19:12:22,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:22,300 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 19:12:22,348 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 19:12:22,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:22,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:22,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:22,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:22,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882972079] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:22,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:22,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-03-03 19:12:22,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273330844] [2022-03-03 19:12:22,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 19:12:22,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 19:12:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 19:12:22,607 INFO L87 Difference]: Start difference. First operand 270 states and 792 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 19:12:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:22,757 INFO L93 Difference]: Finished difference Result 382 states and 1064 transitions. [2022-03-03 19:12:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 19:12:22,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 19:12:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:22,758 INFO L225 Difference]: With dead ends: 382 [2022-03-03 19:12:22,758 INFO L226 Difference]: Without dead ends: 298 [2022-03-03 19:12:22,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:12:22,758 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 156 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:22,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 74 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-03-03 19:12:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 221. [2022-03-03 19:12:22,761 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 19:12:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 650 transitions. [2022-03-03 19:12:22,761 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 650 transitions. Word has length 18 [2022-03-03 19:12:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:22,761 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 650 transitions. [2022-03-03 19:12:22,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 19:12:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 650 transitions. [2022-03-03 19:12:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:22,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:22,762 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 19:12:22,795 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 19:12:22,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:22,971 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1801424317, now seen corresponding path program 10 times [2022-03-03 19:12:22,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:22,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716819046] [2022-03-03 19:12:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:23,016 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 19:12:23,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:23,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716819046] [2022-03-03 19:12:23,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716819046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108096101] [2022-03-03 19:12:23,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:23,028 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 19:12:23,029 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 19:12:23,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:23,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:23,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:23,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:23,117 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 19:12:23,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:23,192 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 19:12:23,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108096101] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:23,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-03-03 19:12:23,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167846627] [2022-03-03 19:12:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:23,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:23,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:12:23,193 INFO L87 Difference]: Start difference. First operand 221 states and 650 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:23,267 INFO L93 Difference]: Finished difference Result 324 states and 925 transitions. [2022-03-03 19:12:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:23,267 INFO L225 Difference]: With dead ends: 324 [2022-03-03 19:12:23,268 INFO L226 Difference]: Without dead ends: 273 [2022-03-03 19:12:23,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-03 19:12:23,268 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:23,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 33 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:12:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-03-03 19:12:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 222. [2022-03-03 19:12:23,270 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 19:12:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 650 transitions. [2022-03-03 19:12:23,271 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 650 transitions. Word has length 18 [2022-03-03 19:12:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:23,271 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 650 transitions. [2022-03-03 19:12:23,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 650 transitions. [2022-03-03 19:12:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:23,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:23,271 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 19:12:23,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:23,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,479 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash -315615553, now seen corresponding path program 11 times [2022-03-03 19:12:23,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:23,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029606204] [2022-03-03 19:12:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:23,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:23,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:23,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029606204] [2022-03-03 19:12:23,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029606204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140879433] [2022-03-03 19:12:23,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:23,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:23,522 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 19:12:23,522 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 19:12:23,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:23,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:23,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:12:23,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:23,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:23,672 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 19:12:23,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140879433] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,672 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 19:12:23,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 10 [2022-03-03 19:12:23,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603793992] [2022-03-03 19:12:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:12:23,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 19:12:23,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 19:12:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 19:12:23,673 INFO L87 Difference]: Start difference. First operand 222 states and 650 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:23,736 INFO L93 Difference]: Finished difference Result 308 states and 878 transitions. [2022-03-03 19:12:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 19:12:23,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:23,737 INFO L225 Difference]: With dead ends: 308 [2022-03-03 19:12:23,737 INFO L226 Difference]: Without dead ends: 265 [2022-03-03 19:12:23,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:12:23,738 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:23,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 37 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:12:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-03-03 19:12:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2022-03-03 19:12:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.935064935064935) internal successors, (678), 231 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 19:12:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 678 transitions. [2022-03-03 19:12:23,741 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 678 transitions. Word has length 18 [2022-03-03 19:12:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:23,742 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 678 transitions. [2022-03-03 19:12:23,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 19:12:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 678 transitions. [2022-03-03 19:12:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:12:23,742 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:23,742 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 19:12:23,758 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 19:12:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,955 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1817481091, now seen corresponding path program 12 times [2022-03-03 19:12:23,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:23,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697064677] [2022-03-03 19:12:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:23,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:23,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697064677] [2022-03-03 19:12:23,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697064677] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:23,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98056583] [2022-03-03 19:12:23,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:23,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:23,996 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 19:12:23,997 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 19:12:24,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:24,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:24,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:12:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:24,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:24,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98056583] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:24,333 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:24,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-03-03 19:12:24,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496126334] [2022-03-03 19:12:24,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:24,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:12:24,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:12:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:12:24,334 INFO L87 Difference]: Start difference. First operand 232 states and 678 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 19:12:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:24,528 INFO L93 Difference]: Finished difference Result 333 states and 922 transitions. [2022-03-03 19:12:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:12:24,528 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 19:12:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:24,528 INFO L225 Difference]: With dead ends: 333 [2022-03-03 19:12:24,528 INFO L226 Difference]: Without dead ends: 220 [2022-03-03 19:12:24,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-03-03 19:12:24,529 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 156 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:24,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 116 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:12:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-03-03 19:12:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 189. [2022-03-03 19:12:24,532 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 19:12:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2022-03-03 19:12:24,532 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 18 [2022-03-03 19:12:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:24,532 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2022-03-03 19:12:24,532 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 19:12:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2022-03-03 19:12:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:24,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:24,532 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 19:12:24,549 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 19:12:24,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:24,749 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:24,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1960611379, now seen corresponding path program 1 times [2022-03-03 19:12:24,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:24,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286115591] [2022-03-03 19:12:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:24,930 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 19:12:24,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:24,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286115591] [2022-03-03 19:12:24,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286115591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:24,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136798825] [2022-03-03 19:12:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:24,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:24,932 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 19:12:24,947 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 19:12:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:24,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:12:24,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:25,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:25,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:12:26,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:26,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 154 treesize of output 134 [2022-03-03 19:12:26,579 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 114 [2022-03-03 19:12:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:27,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:27,301 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:27,302 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:12:27,648 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:27,648 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 113 treesize of output 105 [2022-03-03 19:12:27,656 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:27,657 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 97 treesize of output 89 [2022-03-03 19:12:27,808 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 19:12:27,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136798825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:27,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:27,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:27,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779597987] [2022-03-03 19:12:27,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:27,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:27,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:27,810 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 19:12:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:28,295 INFO L93 Difference]: Finished difference Result 431 states and 1203 transitions. [2022-03-03 19:12:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:12:28,295 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 19:12:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:28,296 INFO L225 Difference]: With dead ends: 431 [2022-03-03 19:12:28,296 INFO L226 Difference]: Without dead ends: 421 [2022-03-03 19:12:28,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:12:28,296 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:28,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 410 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2022-03-03 19:12:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-03-03 19:12:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 197. [2022-03-03 19:12:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.9030612244897958) internal successors, (569), 196 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 19:12:28,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 569 transitions. [2022-03-03 19:12:28,299 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 569 transitions. Word has length 20 [2022-03-03 19:12:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:28,300 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 569 transitions. [2022-03-03 19:12:28,300 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 19:12:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 569 transitions. [2022-03-03 19:12:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:28,300 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:28,300 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 19:12:28,339 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 19:12:28,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:28,501 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:28,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2145398797, now seen corresponding path program 2 times [2022-03-03 19:12:28,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:28,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985175910] [2022-03-03 19:12:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:28,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:28,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:28,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985175910] [2022-03-03 19:12:28,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985175910] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:28,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598936648] [2022-03-03 19:12:28,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:28,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:28,738 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 19:12:28,739 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 19:12:28,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:28,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:28,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:12:28,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:29,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:29,437 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 116 treesize of output 100 [2022-03-03 19:12:30,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:30,613 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 144 [2022-03-03 19:12:30,615 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 126 [2022-03-03 19:12:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:31,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:31,528 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:31,528 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:12:31,797 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:31,798 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 102 treesize of output 94 [2022-03-03 19:12:31,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:31,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:12:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:31,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598936648] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:31,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:31,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:31,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082521958] [2022-03-03 19:12:31,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:31,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:31,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:31,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:31,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:31,896 INFO L87 Difference]: Start difference. First operand 197 states and 569 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 19:12:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:32,612 INFO L93 Difference]: Finished difference Result 453 states and 1268 transitions. [2022-03-03 19:12:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:12:32,612 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 19:12:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:32,613 INFO L225 Difference]: With dead ends: 453 [2022-03-03 19:12:32,613 INFO L226 Difference]: Without dead ends: 433 [2022-03-03 19:12:32,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:12:32,613 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 125 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:32,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 540 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 618 Invalid, 0 Unknown, 417 Unchecked, 0.3s Time] [2022-03-03 19:12:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-03 19:12:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 213. [2022-03-03 19:12:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.8632075471698113) internal successors, (607), 212 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 607 transitions. [2022-03-03 19:12:32,617 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 607 transitions. Word has length 20 [2022-03-03 19:12:32,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:32,617 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 607 transitions. [2022-03-03 19:12:32,617 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 19:12:32,617 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 607 transitions. [2022-03-03 19:12:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:32,617 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:32,617 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 19:12:32,653 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 19:12:32,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:32,827 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1515917315, now seen corresponding path program 3 times [2022-03-03 19:12:32,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:32,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536833851] [2022-03-03 19:12:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:32,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:33,021 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 19:12:33,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:33,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536833851] [2022-03-03 19:12:33,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536833851] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:33,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635449329] [2022-03-03 19:12:33,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:12:33,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:33,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:33,036 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 19:12:33,074 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 19:12:33,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:12:33,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:33,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:12:33,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:33,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:33,656 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 116 treesize of output 100 [2022-03-03 19:12:35,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:35,212 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 146 [2022-03-03 19:12:35,214 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 128 [2022-03-03 19:12:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:35,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:36,118 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:36,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:12:36,437 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:36,437 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 102 treesize of output 94 [2022-03-03 19:12:36,445 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:36,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:12:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:36,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635449329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:36,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:36,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:36,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164453895] [2022-03-03 19:12:36,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:36,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:36,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:36,592 INFO L87 Difference]: Start difference. First operand 213 states and 607 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 19:12:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:37,963 INFO L93 Difference]: Finished difference Result 746 states and 2032 transitions. [2022-03-03 19:12:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 19:12:37,963 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 19:12:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:37,964 INFO L225 Difference]: With dead ends: 746 [2022-03-03 19:12:37,964 INFO L226 Difference]: Without dead ends: 730 [2022-03-03 19:12:37,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:12:37,965 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 164 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 428 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:37,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 813 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 601 Invalid, 0 Unknown, 428 Unchecked, 0.3s Time] [2022-03-03 19:12:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-03 19:12:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 213. [2022-03-03 19:12:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.8537735849056602) internal successors, (605), 212 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 605 transitions. [2022-03-03 19:12:37,969 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 605 transitions. Word has length 20 [2022-03-03 19:12:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:37,969 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 605 transitions. [2022-03-03 19:12:37,969 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 19:12:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 605 transitions. [2022-03-03 19:12:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:37,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:37,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:12:37,989 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 19:12:38,187 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,SelfDestructingSolverStorable154 [2022-03-03 19:12:38,187 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -829366387, now seen corresponding path program 4 times [2022-03-03 19:12:38,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:38,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133922216] [2022-03-03 19:12:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:38,404 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 19:12:38,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:38,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133922216] [2022-03-03 19:12:38,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133922216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:38,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16108763] [2022-03-03 19:12:38,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:12:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:38,406 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 19:12:38,407 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 19:12:38,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:12:38,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:38,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:12:38,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:39,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:39,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 140 treesize of output 122 [2022-03-03 19:12:39,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:39,705 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 177 [2022-03-03 19:12:39,710 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 155 [2022-03-03 19:12:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 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 19:12:41,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:41,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:12:41,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:41,624 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 102 treesize of output 94 [2022-03-03 19:12:41,645 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:41,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:12:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:41,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16108763] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:41,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:41,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:41,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996410860] [2022-03-03 19:12:41,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:41,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:41,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:41,754 INFO L87 Difference]: Start difference. First operand 213 states and 605 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 19:12:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:43,172 INFO L93 Difference]: Finished difference Result 472 states and 1324 transitions. [2022-03-03 19:12:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:12:43,173 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 19:12:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:43,174 INFO L225 Difference]: With dead ends: 472 [2022-03-03 19:12:43,174 INFO L226 Difference]: Without dead ends: 458 [2022-03-03 19:12:43,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:12:43,174 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 145 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:43,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 428 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 570 Invalid, 0 Unknown, 79 Unchecked, 0.3s Time] [2022-03-03 19:12:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-03 19:12:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 215. [2022-03-03 19:12:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.8598130841121496) internal successors, (612), 214 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 19:12:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 612 transitions. [2022-03-03 19:12:43,178 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 612 transitions. Word has length 20 [2022-03-03 19:12:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:43,178 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 612 transitions. [2022-03-03 19:12:43,178 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 19:12:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 612 transitions. [2022-03-03 19:12:43,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:43,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:43,179 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 19:12:43,225 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 19:12:43,399 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,SelfDestructingSolverStorable155 [2022-03-03 19:12:43,399 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash -806769839, now seen corresponding path program 5 times [2022-03-03 19:12:43,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:43,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991402868] [2022-03-03 19:12:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:43,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:43,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991402868] [2022-03-03 19:12:43,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991402868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:43,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094604402] [2022-03-03 19:12:43,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:12:43,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:43,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:43,667 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 19:12:43,706 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 19:12:43,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:43,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:43,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:12:43,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:43,987 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 112 treesize of output 96 [2022-03-03 19:12:44,360 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 198 treesize of output 174 [2022-03-03 19:12:44,363 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 150 [2022-03-03 19:12:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:45,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:45,550 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:45,550 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2022-03-03 19:12:45,839 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:12:45,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 81 [2022-03-03 19:12:45,842 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 78 treesize of output 62 [2022-03-03 19:12:45,846 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 19:12:45,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094604402] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:45,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:45,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:12:45,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921334618] [2022-03-03 19:12:45,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:45,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:12:45,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:45,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:12:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:12:45,847 INFO L87 Difference]: Start difference. First operand 215 states and 612 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 19:12:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:48,945 INFO L93 Difference]: Finished difference Result 548 states and 1457 transitions. [2022-03-03 19:12:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:12:48,945 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 19:12:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:48,946 INFO L225 Difference]: With dead ends: 548 [2022-03-03 19:12:48,946 INFO L226 Difference]: Without dead ends: 489 [2022-03-03 19:12:48,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:12:48,946 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 300 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:48,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 307 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:12:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-03-03 19:12:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 226. [2022-03-03 19:12:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8755555555555556) internal successors, (647), 225 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 19:12:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 647 transitions. [2022-03-03 19:12:48,950 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 647 transitions. Word has length 20 [2022-03-03 19:12:48,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:48,950 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 647 transitions. [2022-03-03 19:12:48,950 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 19:12:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 647 transitions. [2022-03-03 19:12:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:48,951 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:48,951 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 19:12:48,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:49,163 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,SelfDestructingSolverStorable156 [2022-03-03 19:12:49,163 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash -235315033, now seen corresponding path program 6 times [2022-03-03 19:12:49,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:49,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647266309] [2022-03-03 19:12:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:49,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:49,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:49,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647266309] [2022-03-03 19:12:49,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647266309] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:49,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132546812] [2022-03-03 19:12:49,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:12:49,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:49,373 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 19:12:49,374 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 19:12:49,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:12:49,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:49,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:12:49,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:50,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:50,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:12:51,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:51,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 177 treesize of output 157 [2022-03-03 19:12:51,613 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 137 [2022-03-03 19:12:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:52,458 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:52,459 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 90 treesize of output 84 [2022-03-03 19:12:52,699 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:52,699 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 102 treesize of output 94 [2022-03-03 19:12:52,705 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:52,705 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 86 treesize of output 78 [2022-03-03 19:12:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:52,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132546812] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:52,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:52,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:52,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187791726] [2022-03-03 19:12:52,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:52,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:52,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:52,799 INFO L87 Difference]: Start difference. First operand 226 states and 647 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 19:12:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:53,778 INFO L93 Difference]: Finished difference Result 750 states and 2053 transitions. [2022-03-03 19:12:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:12:53,778 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 19:12:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:53,792 INFO L225 Difference]: With dead ends: 750 [2022-03-03 19:12:53,792 INFO L226 Difference]: Without dead ends: 720 [2022-03-03 19:12:53,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=1702, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:12:53,793 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 156 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:53,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 750 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 865 Invalid, 0 Unknown, 485 Unchecked, 0.3s Time] [2022-03-03 19:12:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-03-03 19:12:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 237. [2022-03-03 19:12:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 2.860169491525424) internal successors, (675), 236 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:12:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 675 transitions. [2022-03-03 19:12:53,814 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 675 transitions. Word has length 20 [2022-03-03 19:12:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:53,814 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 675 transitions. [2022-03-03 19:12:53,814 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 19:12:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 675 transitions. [2022-03-03 19:12:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:53,815 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:53,815 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 19:12:53,833 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 19:12:54,030 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,SelfDestructingSolverStorable157 [2022-03-03 19:12:54,031 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash 113019597, now seen corresponding path program 7 times [2022-03-03 19:12:54,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:54,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262917351] [2022-03-03 19:12:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:54,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:54,205 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 19:12:54,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:54,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262917351] [2022-03-03 19:12:54,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262917351] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:54,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367968498] [2022-03-03 19:12:54,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:12:54,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:54,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:54,206 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 19:12:54,207 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 19:12:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:54,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:12:54,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:54,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:54,722 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 120 treesize of output 104 [2022-03-03 19:12:55,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:55,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 139 [2022-03-03 19:12:55,322 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 139 treesize of output 119 [2022-03-03 19:12:55,643 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 19:12:55,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:55,883 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:55,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:12:56,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:56,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:12:56,177 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:56,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:12:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:56,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367968498] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:56,262 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:56,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:56,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489908800] [2022-03-03 19:12:56,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:56,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:56,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:56,263 INFO L87 Difference]: Start difference. First operand 237 states and 675 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 19:12:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:12:56,885 INFO L93 Difference]: Finished difference Result 408 states and 1155 transitions. [2022-03-03 19:12:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:12:56,885 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 19:12:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:12:56,886 INFO L225 Difference]: With dead ends: 408 [2022-03-03 19:12:56,886 INFO L226 Difference]: Without dead ends: 401 [2022-03-03 19:12:56,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:12:56,886 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 91 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 496 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:12:56,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 320 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 496 Unchecked, 0.1s Time] [2022-03-03 19:12:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-03-03 19:12:56,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 241. [2022-03-03 19:12:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.845833333333333) internal successors, (683), 240 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 19:12:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 683 transitions. [2022-03-03 19:12:56,889 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 683 transitions. Word has length 20 [2022-03-03 19:12:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:12:56,889 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 683 transitions. [2022-03-03 19:12:56,889 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 19:12:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 683 transitions. [2022-03-03 19:12:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:12:56,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:12:56,891 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 19:12:56,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 19:12:57,107 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,SelfDestructingSolverStorable158 [2022-03-03 19:12:57,107 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:12:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:12:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445559, now seen corresponding path program 8 times [2022-03-03 19:12:57,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:12:57,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400913464] [2022-03-03 19:12:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:12:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:12:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:12:57,391 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 19:12:57,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:12:57,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400913464] [2022-03-03 19:12:57,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400913464] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:12:57,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657964153] [2022-03-03 19:12:57,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:12:57,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:12:57,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:12:57,393 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 19:12:57,394 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 19:12:57,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:12:57,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:12:57,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:12:57,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:12:58,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:58,123 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-03-03 19:12:58,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:12:58,602 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 152 [2022-03-03 19:12:58,605 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 152 treesize of output 130 [2022-03-03 19:12:59,256 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 19:12:59,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:12:59,477 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:59,477 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 122 treesize of output 112 [2022-03-03 19:12:59,791 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:59,791 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 119 treesize of output 109 [2022-03-03 19:12:59,798 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:12:59,799 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 91 [2022-03-03 19:12:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:12:59,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657964153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:12:59,882 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:12:59,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:12:59,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817096892] [2022-03-03 19:12:59,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:12:59,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:12:59,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:12:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:12:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:12:59,883 INFO L87 Difference]: Start difference. First operand 241 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 19:13:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:00,347 INFO L93 Difference]: Finished difference Result 430 states and 1212 transitions. [2022-03-03 19:13:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:13:00,347 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 19:13:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:00,348 INFO L225 Difference]: With dead ends: 430 [2022-03-03 19:13:00,348 INFO L226 Difference]: Without dead ends: 423 [2022-03-03 19:13:00,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:13:00,348 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:00,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 265 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 312 Invalid, 0 Unknown, 80 Unchecked, 0.1s Time] [2022-03-03 19:13:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-03 19:13:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 244. [2022-03-03 19:13:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.847736625514403) internal successors, (692), 243 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 19:13:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 692 transitions. [2022-03-03 19:13:00,352 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 692 transitions. Word has length 20 [2022-03-03 19:13:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:00,352 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 692 transitions. [2022-03-03 19:13:00,352 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 19:13:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 692 transitions. [2022-03-03 19:13:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:00,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:00,353 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 19:13:00,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-03 19:13:00,568 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,SelfDestructingSolverStorable159 [2022-03-03 19:13:00,568 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:00,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1858849011, now seen corresponding path program 9 times [2022-03-03 19:13:00,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:00,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205490682] [2022-03-03 19:13:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:00,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:00,825 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 19:13:00,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:00,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205490682] [2022-03-03 19:13:00,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205490682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:00,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597135834] [2022-03-03 19:13:00,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:00,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:00,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:00,826 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 19:13:00,828 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 19:13:00,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:13:00,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:00,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:13:00,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:01,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:01,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:13:01,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:01,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 159 [2022-03-03 19:13:01,724 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 139 [2022-03-03 19:13:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:02,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:02,655 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:02,655 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 107 treesize of output 99 [2022-03-03 19:13:03,195 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:03,196 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 113 treesize of output 105 [2022-03-03 19:13:03,203 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:03,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:13:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:03,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597135834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:03,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:03,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:03,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341617831] [2022-03-03 19:13:03,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:03,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:03,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:03,335 INFO L87 Difference]: Start difference. First operand 244 states and 692 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 19:13:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:05,150 INFO L93 Difference]: Finished difference Result 692 states and 1839 transitions. [2022-03-03 19:13:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:13:05,150 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 19:13:05,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:05,151 INFO L225 Difference]: With dead ends: 692 [2022-03-03 19:13:05,151 INFO L226 Difference]: Without dead ends: 651 [2022-03-03 19:13:05,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=254, Invalid=1816, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:13:05,152 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 176 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:05,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 564 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 604 Invalid, 0 Unknown, 355 Unchecked, 0.3s Time] [2022-03-03 19:13:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-03-03 19:13:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 245. [2022-03-03 19:13:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 2.848360655737705) internal successors, (695), 244 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 695 transitions. [2022-03-03 19:13:05,156 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 695 transitions. Word has length 20 [2022-03-03 19:13:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:05,156 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 695 transitions. [2022-03-03 19:13:05,156 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 19:13:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 695 transitions. [2022-03-03 19:13:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:05,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:05,157 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 19:13:05,173 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 19:13:05,372 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,SelfDestructingSolverStorable160 [2022-03-03 19:13:05,373 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash 264725201, now seen corresponding path program 10 times [2022-03-03 19:13:05,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:05,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665820002] [2022-03-03 19:13:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:05,665 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 19:13:05,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:05,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665820002] [2022-03-03 19:13:05,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665820002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:05,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362369206] [2022-03-03 19:13:05,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:05,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:05,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:05,679 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 19:13:05,680 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 19:13:05,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:05,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:05,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:05,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:06,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:06,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 140 treesize of output 122 [2022-03-03 19:13:06,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:06,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 187 [2022-03-03 19:13:06,668 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 187 treesize of output 161 [2022-03-03 19:13:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:07,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:07,958 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:07,959 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 90 treesize of output 84 [2022-03-03 19:13:08,340 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:08,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:08,350 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:08,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:13:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:08,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362369206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:08,488 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:08,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:08,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155807598] [2022-03-03 19:13:08,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:08,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:08,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:08,489 INFO L87 Difference]: Start difference. First operand 245 states and 695 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 19:13:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:10,203 INFO L93 Difference]: Finished difference Result 725 states and 1980 transitions. [2022-03-03 19:13:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:13:10,203 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 19:13:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:10,205 INFO L225 Difference]: With dead ends: 725 [2022-03-03 19:13:10,205 INFO L226 Difference]: Without dead ends: 697 [2022-03-03 19:13:10,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=288, Invalid=1692, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:13:10,205 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 155 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:10,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 432 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 731 Invalid, 0 Unknown, 444 Unchecked, 0.4s Time] [2022-03-03 19:13:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-03-03 19:13:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 247. [2022-03-03 19:13:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.8536585365853657) internal successors, (702), 246 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 702 transitions. [2022-03-03 19:13:10,209 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 702 transitions. Word has length 20 [2022-03-03 19:13:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:10,209 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 702 transitions. [2022-03-03 19:13:10,210 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 19:13:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 702 transitions. [2022-03-03 19:13:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:10,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:10,210 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 19:13:10,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-03 19:13:10,426 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,SelfDestructingSolverStorable161 [2022-03-03 19:13:10,426 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash 287321749, now seen corresponding path program 11 times [2022-03-03 19:13:10,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:10,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672513114] [2022-03-03 19:13:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:10,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:10,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672513114] [2022-03-03 19:13:10,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672513114] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:10,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857493278] [2022-03-03 19:13:10,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:10,642 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 19:13:10,643 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 19:13:10,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:10,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:10,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:13:10,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:10,913 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 113 treesize of output 97 [2022-03-03 19:13:11,167 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 173 treesize of output 151 [2022-03-03 19:13:11,169 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 151 treesize of output 129 [2022-03-03 19:13:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:11,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:11,885 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:11,885 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 78 treesize of output 72 [2022-03-03 19:13:12,116 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:13:12,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-03-03 19:13:12,118 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 88 treesize of output 70 [2022-03-03 19:13:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:12,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857493278] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:12,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:12,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:13:12,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110795492] [2022-03-03 19:13:12,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:12,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:13:12,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:13:12,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:13:12,150 INFO L87 Difference]: Start difference. First operand 247 states and 702 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 19:13:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:14,437 INFO L93 Difference]: Finished difference Result 518 states and 1393 transitions. [2022-03-03 19:13:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:13:14,437 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 19:13:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:14,438 INFO L225 Difference]: With dead ends: 518 [2022-03-03 19:13:14,438 INFO L226 Difference]: Without dead ends: 459 [2022-03-03 19:13:14,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:13:14,438 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 177 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:14,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 450 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:13:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-03 19:13:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 248. [2022-03-03 19:13:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.8461538461538463) internal successors, (703), 247 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 703 transitions. [2022-03-03 19:13:14,441 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 703 transitions. Word has length 20 [2022-03-03 19:13:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:14,442 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 703 transitions. [2022-03-03 19:13:14,442 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 19:13:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 703 transitions. [2022-03-03 19:13:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:14,442 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:14,442 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 19:13:14,457 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 19:13:14,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:14,650 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 858776555, now seen corresponding path program 12 times [2022-03-03 19:13:14,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:14,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621387380] [2022-03-03 19:13:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:14,930 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 19:13:14,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:14,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621387380] [2022-03-03 19:13:14,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621387380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:14,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860590389] [2022-03-03 19:13:14,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:14,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:14,943 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 19:13:14,977 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 19:13:14,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:14,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:14,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:14,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:15,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:15,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:13:16,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:16,302 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 179 treesize of output 157 [2022-03-03 19:13:16,303 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 135 [2022-03-03 19:13:16,705 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 19:13:16,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:16,885 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:16,886 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:13:17,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:17,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:17,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:17,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:13:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:17,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860590389] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:17,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:17,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:17,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928484495] [2022-03-03 19:13:17,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:17,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:17,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:17,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:17,221 INFO L87 Difference]: Start difference. First operand 248 states and 703 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 19:13:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:17,697 INFO L93 Difference]: Finished difference Result 433 states and 1213 transitions. [2022-03-03 19:13:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:13:17,698 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 19:13:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:17,698 INFO L225 Difference]: With dead ends: 433 [2022-03-03 19:13:17,698 INFO L226 Difference]: Without dead ends: 413 [2022-03-03 19:13:17,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:13:17,699 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:17,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 308 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 338 Invalid, 0 Unknown, 78 Unchecked, 0.1s Time] [2022-03-03 19:13:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-03 19:13:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 252. [2022-03-03 19:13:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.8286852589641436) internal successors, (710), 251 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 19:13:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 710 transitions. [2022-03-03 19:13:17,702 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 710 transitions. Word has length 20 [2022-03-03 19:13:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:17,702 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 710 transitions. [2022-03-03 19:13:17,702 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 19:13:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 710 transitions. [2022-03-03 19:13:17,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:17,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:17,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:17,720 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 19:13:17,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:17,916 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:17,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:17,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1831707177, now seen corresponding path program 13 times [2022-03-03 19:13:17,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:17,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817672831] [2022-03-03 19:13:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:18,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:18,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817672831] [2022-03-03 19:13:18,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817672831] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:18,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202468251] [2022-03-03 19:13:18,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:18,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:18,114 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 19:13:18,144 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 19:13:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:18,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:13:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:18,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:18,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:13:19,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:19,830 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 133 [2022-03-03 19:13:19,831 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 133 treesize of output 115 [2022-03-03 19:13:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:20,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:20,297 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:20,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:13:20,629 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:20,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:13:20,636 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:20,636 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:13:20,778 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 19:13:20,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202468251] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:20,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:20,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:20,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741921850] [2022-03-03 19:13:20,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:20,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:20,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:20,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:20,779 INFO L87 Difference]: Start difference. First operand 252 states and 710 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 19:13:21,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:21,720 INFO L93 Difference]: Finished difference Result 431 states and 1212 transitions. [2022-03-03 19:13:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:13:21,720 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 19:13:21,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:21,722 INFO L225 Difference]: With dead ends: 431 [2022-03-03 19:13:21,722 INFO L226 Difference]: Without dead ends: 420 [2022-03-03 19:13:21,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:13:21,722 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 51 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:21,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 463 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 484 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2022-03-03 19:13:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-03 19:13:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 249. [2022-03-03 19:13:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.842741935483871) internal successors, (705), 248 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 705 transitions. [2022-03-03 19:13:21,726 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 705 transitions. Word has length 20 [2022-03-03 19:13:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:21,726 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 705 transitions. [2022-03-03 19:13:21,726 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 19:13:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 705 transitions. [2022-03-03 19:13:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:21,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:21,727 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 19:13:21,746 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 19:13:21,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:21,935 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1284001523, now seen corresponding path program 14 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 [1089130049] [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 19:13:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:22,166 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 19:13:22,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:22,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089130049] [2022-03-03 19:13:22,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089130049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:22,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250727901] [2022-03-03 19:13:22,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:22,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:22,168 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 19:13:22,168 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 19:13:22,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:22,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:22,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:22,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:22,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:22,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 118 treesize of output 102 [2022-03-03 19:13:23,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:23,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 152 [2022-03-03 19:13:23,504 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 152 treesize of output 132 [2022-03-03 19:13:24,066 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 19:13:24,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:24,406 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:24,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-03-03 19:13:24,739 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:24,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:24,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:24,745 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 86 treesize of output 78 [2022-03-03 19:13:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:24,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250727901] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:24,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:24,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:24,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166927528] [2022-03-03 19:13:24,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:24,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:24,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:24,835 INFO L87 Difference]: Start difference. First operand 249 states and 705 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 19:13:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:25,342 INFO L93 Difference]: Finished difference Result 460 states and 1310 transitions. [2022-03-03 19:13:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:13:25,342 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 19:13:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:25,343 INFO L225 Difference]: With dead ends: 460 [2022-03-03 19:13:25,343 INFO L226 Difference]: Without dead ends: 453 [2022-03-03 19:13:25,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:13:25,343 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:25,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 268 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 332 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-03-03 19:13:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-03 19:13:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 253. [2022-03-03 19:13:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.8293650793650795) internal successors, (713), 252 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 713 transitions. [2022-03-03 19:13:25,347 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 713 transitions. Word has length 20 [2022-03-03 19:13:25,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:25,348 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 713 transitions. [2022-03-03 19:13:25,348 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 19:13:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 713 transitions. [2022-03-03 19:13:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:25,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:25,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:13:25,365 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 19:13:25,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:25,565 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1459874991, now seen corresponding path program 15 times [2022-03-03 19:13:25,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:25,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514018838] [2022-03-03 19:13:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:25,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:25,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514018838] [2022-03-03 19:13:25,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514018838] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:25,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485182338] [2022-03-03 19:13:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:25,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:25,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:25,745 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 19:13:25,754 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 19:13:25,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:13:25,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:25,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:25,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:26,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:26,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:13:27,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:27,291 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 160 treesize of output 140 [2022-03-03 19:13:27,293 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 140 treesize of output 120 [2022-03-03 19:13:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:27,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:28,093 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:28,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 93 [2022-03-03 19:13:28,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:28,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:28,493 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:28,493 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 86 treesize of output 78 [2022-03-03 19:13:28,615 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 19:13:28,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485182338] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:28,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:28,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:28,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351332806] [2022-03-03 19:13:28,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:28,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:28,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:28,616 INFO L87 Difference]: Start difference. First operand 253 states and 713 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 19:13:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:29,453 INFO L93 Difference]: Finished difference Result 629 states and 1802 transitions. [2022-03-03 19:13:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:13:29,453 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 19:13:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:29,454 INFO L225 Difference]: With dead ends: 629 [2022-03-03 19:13:29,454 INFO L226 Difference]: Without dead ends: 615 [2022-03-03 19:13:29,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:13:29,454 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 99 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:29,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 652 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 563 Invalid, 0 Unknown, 353 Unchecked, 0.2s Time] [2022-03-03 19:13:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-03-03 19:13:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 257. [2022-03-03 19:13:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.828125) internal successors, (724), 256 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 19:13:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 724 transitions. [2022-03-03 19:13:29,459 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 724 transitions. Word has length 20 [2022-03-03 19:13:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:29,459 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 724 transitions. [2022-03-03 19:13:29,459 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 19:13:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 724 transitions. [2022-03-03 19:13:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:29,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:29,459 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 19:13:29,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 19:13:29,675 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,SelfDestructingSolverStorable166 [2022-03-03 19:13:29,675 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash 840627149, now seen corresponding path program 16 times [2022-03-03 19:13:29,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:29,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310084783] [2022-03-03 19:13:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:29,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:29,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:29,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310084783] [2022-03-03 19:13:29,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310084783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:29,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422602471] [2022-03-03 19:13:29,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:29,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:29,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:29,905 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 19:13:29,906 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 19:13:29,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:29,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:29,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:29,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:30,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:30,365 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-03-03 19:13:30,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:30,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 149 [2022-03-03 19:13:30,743 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 131 [2022-03-03 19:13:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:31,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:31,781 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:31,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-03-03 19:13:31,995 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:31,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:32,001 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:32,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:13:32,080 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 19:13:32,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422602471] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:32,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:32,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:32,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057854105] [2022-03-03 19:13:32,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:32,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:32,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:32,081 INFO L87 Difference]: Start difference. First operand 257 states and 724 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 19:13:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:32,565 INFO L93 Difference]: Finished difference Result 456 states and 1295 transitions. [2022-03-03 19:13:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:13:32,565 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 19:13:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:32,566 INFO L225 Difference]: With dead ends: 456 [2022-03-03 19:13:32,566 INFO L226 Difference]: Without dead ends: 449 [2022-03-03 19:13:32,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:13:32,566 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 102 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 338 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:32,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 301 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 365 Invalid, 0 Unknown, 338 Unchecked, 0.1s Time] [2022-03-03 19:13:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-03 19:13:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 261. [2022-03-03 19:13:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.830769230769231) internal successors, (736), 260 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 19:13:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 736 transitions. [2022-03-03 19:13:32,594 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 736 transitions. Word has length 20 [2022-03-03 19:13:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:32,595 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 736 transitions. [2022-03-03 19:13:32,595 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 19:13:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 736 transitions. [2022-03-03 19:13:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:32,595 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:32,595 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 19:13:32,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 19:13:32,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:32,796 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash 863223697, now seen corresponding path program 17 times [2022-03-03 19:13:32,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:32,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155819850] [2022-03-03 19:13:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:32,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:32,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155819850] [2022-03-03 19:13:32,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155819850] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:32,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745888167] [2022-03-03 19:13:32,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:32,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:32,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:32,979 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 19:13:32,980 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 19:13:33,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:13:33,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:33,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:33,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:33,274 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 93 treesize of output 79 [2022-03-03 19:13:33,537 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 147 [2022-03-03 19:13:33,540 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 147 treesize of output 125 [2022-03-03 19:13:34,274 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 19:13:34,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:34,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:34,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 116 [2022-03-03 19:13:34,800 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:13:34,800 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 120 treesize of output 103 [2022-03-03 19:13:34,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 80 [2022-03-03 19:13:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:34,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745888167] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:34,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:34,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:13:34,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415716905] [2022-03-03 19:13:34,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:34,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:13:34,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:34,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:13:34,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:13:34,842 INFO L87 Difference]: Start difference. First operand 261 states and 736 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 19:13:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:39,198 INFO L93 Difference]: Finished difference Result 682 states and 1799 transitions. [2022-03-03 19:13:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:13:39,198 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 19:13:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:39,199 INFO L225 Difference]: With dead ends: 682 [2022-03-03 19:13:39,199 INFO L226 Difference]: Without dead ends: 608 [2022-03-03 19:13:39,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=357, Invalid=1535, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:13:39,200 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 309 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:39,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 483 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:13:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-03 19:13:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 278. [2022-03-03 19:13:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.88086642599278) internal successors, (798), 277 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 19:13:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 798 transitions. [2022-03-03 19:13:39,204 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 798 transitions. Word has length 20 [2022-03-03 19:13:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:39,204 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 798 transitions. [2022-03-03 19:13:39,204 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 19:13:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 798 transitions. [2022-03-03 19:13:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:39,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:39,205 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 19:13:39,220 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 19:13:39,420 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,SelfDestructingSolverStorable168 [2022-03-03 19:13:39,420 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1153255395, now seen corresponding path program 18 times [2022-03-03 19:13:39,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:39,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482107901] [2022-03-03 19:13:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:39,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:39,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482107901] [2022-03-03 19:13:39,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482107901] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:39,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020445727] [2022-03-03 19:13:39,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:13:39,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:39,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:39,624 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 19:13:39,625 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 19:13:39,649 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:13:39,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:39,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:39,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:40,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:40,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:13:41,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:41,197 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 168 treesize of output 144 [2022-03-03 19:13:41,199 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 19:13:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:41,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:42,097 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:42,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:13:42,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:42,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:42,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:42,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:13:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:42,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020445727] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:42,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:42,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:42,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313542364] [2022-03-03 19:13:42,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:42,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:42,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:42,554 INFO L87 Difference]: Start difference. First operand 278 states and 798 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 19:13:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:43,199 INFO L93 Difference]: Finished difference Result 447 states and 1286 transitions. [2022-03-03 19:13:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:13:43,199 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 19:13:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:43,200 INFO L225 Difference]: With dead ends: 447 [2022-03-03 19:13:43,200 INFO L226 Difference]: Without dead ends: 440 [2022-03-03 19:13:43,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:13:43,200 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:43,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 336 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 387 Invalid, 0 Unknown, 275 Unchecked, 0.1s Time] [2022-03-03 19:13:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-03 19:13:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 281. [2022-03-03 19:13:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 2.875) internal successors, (805), 280 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 805 transitions. [2022-03-03 19:13:43,204 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 805 transitions. Word has length 20 [2022-03-03 19:13:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:43,204 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 805 transitions. [2022-03-03 19:13:43,204 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 19:13:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 805 transitions. [2022-03-03 19:13:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:43,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:43,205 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 19:13:43,221 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 19:13:43,419 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,SelfDestructingSolverStorable169 [2022-03-03 19:13:43,419 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:43,420 INFO L85 PathProgramCache]: Analyzing trace with hash -841209761, now seen corresponding path program 19 times [2022-03-03 19:13:43,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:43,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573097509] [2022-03-03 19:13:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:43,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:43,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:43,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573097509] [2022-03-03 19:13:43,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573097509] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:43,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159116011] [2022-03-03 19:13:43,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:13:43,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:43,741 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 19:13:43,742 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 19:13:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:43,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:13:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:44,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:44,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 104 [2022-03-03 19:13:44,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:44,748 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 170 [2022-03-03 19:13:44,750 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 170 treesize of output 150 [2022-03-03 19:13:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:45,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:45,877 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:45,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:13:46,210 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:46,210 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 113 treesize of output 105 [2022-03-03 19:13:46,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:46,216 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 97 treesize of output 89 [2022-03-03 19:13:46,345 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 19:13:46,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159116011] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:46,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:46,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:46,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589338662] [2022-03-03 19:13:46,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:46,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:46,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:46,346 INFO L87 Difference]: Start difference. First operand 281 states and 805 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 19:13:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:46,966 INFO L93 Difference]: Finished difference Result 459 states and 1314 transitions. [2022-03-03 19:13:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:13:46,966 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 19:13:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:46,967 INFO L225 Difference]: With dead ends: 459 [2022-03-03 19:13:46,967 INFO L226 Difference]: Without dead ends: 452 [2022-03-03 19:13:46,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:13:46,967 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 91 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:46,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 224 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 278 Invalid, 0 Unknown, 308 Unchecked, 0.1s Time] [2022-03-03 19:13:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-03-03 19:13:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 285. [2022-03-03 19:13:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.8732394366197185) internal successors, (816), 284 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:13:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 816 transitions. [2022-03-03 19:13:46,971 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 816 transitions. Word has length 20 [2022-03-03 19:13:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:46,971 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 816 transitions. [2022-03-03 19:13:46,971 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 19:13:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 816 transitions. [2022-03-03 19:13:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:46,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:46,972 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 19:13:46,990 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 19:13:47,172 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,SelfDestructingSolverStorable170 [2022-03-03 19:13:47,172 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -818613213, now seen corresponding path program 20 times [2022-03-03 19:13:47,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:47,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309290956] [2022-03-03 19:13:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:47,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:47,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309290956] [2022-03-03 19:13:47,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309290956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:47,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411376327] [2022-03-03 19:13:47,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:13:47,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:47,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:47,475 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 19:13:47,476 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 19:13:47,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:47,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:47,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:13:47,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:48,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:48,112 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 120 treesize of output 104 [2022-03-03 19:13:48,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:48,425 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 199 treesize of output 175 [2022-03-03 19:13:48,427 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 175 treesize of output 151 [2022-03-03 19:13:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:48,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:49,223 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:49,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-03-03 19:13:49,546 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:49,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:13:49,551 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:49,551 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:13:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:49,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411376327] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:49,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:49,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:49,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226063948] [2022-03-03 19:13:49,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:49,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:49,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:49,725 INFO L87 Difference]: Start difference. First operand 285 states and 816 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 19:13:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:51,002 INFO L93 Difference]: Finished difference Result 576 states and 1569 transitions. [2022-03-03 19:13:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:13:51,002 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 19:13:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:51,003 INFO L225 Difference]: With dead ends: 576 [2022-03-03 19:13:51,003 INFO L226 Difference]: Without dead ends: 549 [2022-03-03 19:13:51,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=195, Invalid=1445, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:13:51,004 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 129 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:51,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 560 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 801 Invalid, 0 Unknown, 269 Unchecked, 0.3s Time] [2022-03-03 19:13:51,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-03 19:13:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 284. [2022-03-03 19:13:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.872791519434629) internal successors, (813), 283 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 19:13:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 813 transitions. [2022-03-03 19:13:51,010 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 813 transitions. Word has length 20 [2022-03-03 19:13:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:51,010 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 813 transitions. [2022-03-03 19:13:51,010 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 19:13:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 813 transitions. [2022-03-03 19:13:51,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:51,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:51,010 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 19:13:51,026 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 19:13:51,226 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,SelfDestructingSolverStorable171 [2022-03-03 19:13:51,226 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:51,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:51,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1304960999, now seen corresponding path program 21 times [2022-03-03 19:13:51,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:51,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248381020] [2022-03-03 19:13:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:51,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:51,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:51,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248381020] [2022-03-03 19:13:51,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248381020] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:51,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392287606] [2022-03-03 19:13:51,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:13:51,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:51,435 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 19:13:51,435 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 19:13:51,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:13:51,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:51,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:51,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:51,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:51,952 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 116 treesize of output 100 [2022-03-03 19:13:52,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:52,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 196 treesize of output 172 [2022-03-03 19:13:52,381 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 148 [2022-03-03 19:13:53,141 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 19:13:53,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:53,342 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:53,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:13:53,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:53,591 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 102 treesize of output 94 [2022-03-03 19:13:53,596 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:53,596 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 86 treesize of output 78 [2022-03-03 19:13:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:53,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392287606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:53,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:53,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:53,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808936832] [2022-03-03 19:13:53,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:53,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:53,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:53,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:53,683 INFO L87 Difference]: Start difference. First operand 284 states and 813 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 19:13:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:54,267 INFO L93 Difference]: Finished difference Result 518 states and 1444 transitions. [2022-03-03 19:13:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:13:54,268 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 19:13:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:54,268 INFO L225 Difference]: With dead ends: 518 [2022-03-03 19:13:54,268 INFO L226 Difference]: Without dead ends: 504 [2022-03-03 19:13:54,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:13:54,269 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 84 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:54,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 279 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 364 Invalid, 0 Unknown, 139 Unchecked, 0.1s Time] [2022-03-03 19:13:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-03-03 19:13:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 287. [2022-03-03 19:13:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.867132867132867) internal successors, (820), 286 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 19:13:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 820 transitions. [2022-03-03 19:13:54,273 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 820 transitions. Word has length 20 [2022-03-03 19:13:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:54,273 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 820 transitions. [2022-03-03 19:13:54,273 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 19:13:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 820 transitions. [2022-03-03 19:13:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:54,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:54,274 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 19:13:54,289 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 19:13:54,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:54,483 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1327557547, now seen corresponding path program 22 times [2022-03-03 19:13:54,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:54,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547088342] [2022-03-03 19:13:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:54,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:54,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:54,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547088342] [2022-03-03 19:13:54,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547088342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:54,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51020950] [2022-03-03 19:13:54,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:13:54,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:54,719 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 19:13:54,760 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 19:13:54,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:13:54,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:54,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:13:54,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:55,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:55,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 140 treesize of output 122 [2022-03-03 19:13:55,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:13:55,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 201 treesize of output 177 [2022-03-03 19:13:55,805 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 153 [2022-03-03 19:13:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:56,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:57,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:57,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:13:57,250 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:57,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:13:57,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:57,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:13:57,345 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 19:13:57,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51020950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:13:57,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:13:57,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:13:57,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627885763] [2022-03-03 19:13:57,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:13:57,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:13:57,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:13:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:13:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:13:57,346 INFO L87 Difference]: Start difference. First operand 287 states and 820 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 19:13:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:13:58,405 INFO L93 Difference]: Finished difference Result 688 states and 1926 transitions. [2022-03-03 19:13:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:13:58,409 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 19:13:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:13:58,410 INFO L225 Difference]: With dead ends: 688 [2022-03-03 19:13:58,410 INFO L226 Difference]: Without dead ends: 661 [2022-03-03 19:13:58,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:13:58,411 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:13:58,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 476 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 610 Invalid, 0 Unknown, 219 Unchecked, 0.2s Time] [2022-03-03 19:13:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-03 19:13:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 287. [2022-03-03 19:13:58,415 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 19:13:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 822 transitions. [2022-03-03 19:13:58,415 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 822 transitions. Word has length 20 [2022-03-03 19:13:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:13:58,415 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 822 transitions. [2022-03-03 19:13:58,415 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 19:13:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 822 transitions. [2022-03-03 19:13:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:13:58,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:13:58,416 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 19:13:58,431 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 19:13:58,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:58,622 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:13:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:13:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1899012353, now seen corresponding path program 23 times [2022-03-03 19:13:58,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:13:58,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306590202] [2022-03-03 19:13:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:13:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:13:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:13:58,832 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 19:13:58,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:13:58,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306590202] [2022-03-03 19:13:58,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306590202] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:13:58,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788553833] [2022-03-03 19:13:58,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:13:58,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:13:58,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:13:58,835 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 19:13:58,836 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 19:13:58,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:13:58,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:13:58,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:13:58,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:13:59,075 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 113 treesize of output 97 [2022-03-03 19:13:59,367 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 126 [2022-03-03 19:13:59,369 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 126 treesize of output 108 [2022-03-03 19:13:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:13:59,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:13:59,841 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:13:59,841 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 78 treesize of output 72 [2022-03-03 19:14:00,139 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:14:00,139 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 88 [2022-03-03 19:14:00,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-03-03 19:14:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:00,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788553833] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:00,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:00,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:14:00,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299933732] [2022-03-03 19:14:00,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:00,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:14:00,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:14:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:14:00,182 INFO L87 Difference]: Start difference. First operand 287 states and 822 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 19:14:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:02,087 INFO L93 Difference]: Finished difference Result 475 states and 1324 transitions. [2022-03-03 19:14:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:14:02,087 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 19:14:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:02,088 INFO L225 Difference]: With dead ends: 475 [2022-03-03 19:14:02,088 INFO L226 Difference]: Without dead ends: 424 [2022-03-03 19:14:02,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:14:02,088 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 143 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:02,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 344 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:14:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-03-03 19:14:02,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 293. [2022-03-03 19:14:02,092 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 19:14:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 837 transitions. [2022-03-03 19:14:02,092 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 837 transitions. Word has length 20 [2022-03-03 19:14:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:02,092 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 837 transitions. [2022-03-03 19:14:02,092 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 19:14:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 837 transitions. [2022-03-03 19:14:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:02,093 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:02,093 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 19:14:02,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:02,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:02,308 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 81707215, now seen corresponding path program 24 times [2022-03-03 19:14:02,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:02,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206586827] [2022-03-03 19:14:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:02,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:02,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206586827] [2022-03-03 19:14:02,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206586827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:02,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044629108] [2022-03-03 19:14:02,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:02,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:02,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:02,509 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 19:14:02,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:02,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:02,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:02,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:02,536 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 19:14:03,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:03,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 141 treesize of output 123 [2022-03-03 19:14:04,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:04,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 148 [2022-03-03 19:14:04,043 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 148 treesize of output 128 [2022-03-03 19:14:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:04,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:04,676 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:04,676 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 90 treesize of output 84 [2022-03-03 19:14:04,937 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:04,938 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 102 treesize of output 94 [2022-03-03 19:14:04,946 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:04,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:14:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:05,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044629108] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:05,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:05,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:05,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289526824] [2022-03-03 19:14:05,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:05,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:05,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:05,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:05,047 INFO L87 Difference]: Start difference. First operand 293 states and 837 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 19:14:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:05,695 INFO L93 Difference]: Finished difference Result 518 states and 1434 transitions. [2022-03-03 19:14:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:14:05,695 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 19:14:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:05,696 INFO L225 Difference]: With dead ends: 518 [2022-03-03 19:14:05,696 INFO L226 Difference]: Without dead ends: 508 [2022-03-03 19:14:05,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:14:05,696 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 143 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 566 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:05,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 448 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 379 Invalid, 0 Unknown, 566 Unchecked, 0.1s Time] [2022-03-03 19:14:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-03-03 19:14:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 296. [2022-03-03 19:14:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.857627118644068) internal successors, (843), 295 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 843 transitions. [2022-03-03 19:14:05,700 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 843 transitions. Word has length 20 [2022-03-03 19:14:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:05,700 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 843 transitions. [2022-03-03 19:14:05,700 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 19:14:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 843 transitions. [2022-03-03 19:14:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:05,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:05,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:05,716 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 19:14:05,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:05,901 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:05,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash -107249905, now seen corresponding path program 25 times [2022-03-03 19:14:05,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:05,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023444113] [2022-03-03 19:14:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:06,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:06,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023444113] [2022-03-03 19:14:06,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023444113] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:06,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131431107] [2022-03-03 19:14:06,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:06,092 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 19:14:06,093 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 19:14:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:06,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:06,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:06,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:06,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-03-03 19:14:07,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:07,590 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 143 treesize of output 125 [2022-03-03 19:14:07,592 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 125 treesize of output 107 [2022-03-03 19:14:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:08,230 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:08,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:08,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:08,470 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 113 treesize of output 105 [2022-03-03 19:14:08,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:08,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:14:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:08,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131431107] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:08,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:08,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:08,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709396605] [2022-03-03 19:14:08,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:08,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:08,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:08,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:08,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:08,584 INFO L87 Difference]: Start difference. First operand 296 states and 843 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 19:14:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:09,550 INFO L93 Difference]: Finished difference Result 757 states and 2133 transitions. [2022-03-03 19:14:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:14:09,551 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 19:14:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:09,552 INFO L225 Difference]: With dead ends: 757 [2022-03-03 19:14:09,552 INFO L226 Difference]: Without dead ends: 730 [2022-03-03 19:14:09,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:14:09,552 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 131 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:09,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 784 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 881 Invalid, 0 Unknown, 344 Unchecked, 0.3s Time] [2022-03-03 19:14:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-03 19:14:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 322. [2022-03-03 19:14:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 2.822429906542056) internal successors, (906), 321 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 906 transitions. [2022-03-03 19:14:09,564 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 906 transitions. Word has length 20 [2022-03-03 19:14:09,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:09,564 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 906 transitions. [2022-03-03 19:14:09,565 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 19:14:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 906 transitions. [2022-03-03 19:14:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:09,565 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:09,565 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 19:14:09,581 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 19:14:09,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:09,780 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash -736731387, now seen corresponding path program 26 times [2022-03-03 19:14:09,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:09,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627214776] [2022-03-03 19:14:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:09,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:09,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627214776] [2022-03-03 19:14:09,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627214776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:09,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767260725] [2022-03-03 19:14:09,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:09,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:09,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:09,968 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 19:14:09,968 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 19:14:10,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:10,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:10,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:10,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:10,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:10,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:14:12,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:12,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 175 treesize of output 155 [2022-03-03 19:14:12,258 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 155 treesize of output 135 [2022-03-03 19:14:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:12,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:13,094 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:13,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:13,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:13,404 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 102 treesize of output 94 [2022-03-03 19:14:13,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:13,412 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 86 treesize of output 78 [2022-03-03 19:14:13,537 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 19:14:13,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767260725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:13,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:13,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:13,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909285217] [2022-03-03 19:14:13,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:13,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:13,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:13,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:13,538 INFO L87 Difference]: Start difference. First operand 322 states and 906 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 19:14:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:14,161 INFO L93 Difference]: Finished difference Result 543 states and 1499 transitions. [2022-03-03 19:14:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:14:14,162 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 19:14:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:14,162 INFO L225 Difference]: With dead ends: 543 [2022-03-03 19:14:14,163 INFO L226 Difference]: Without dead ends: 506 [2022-03-03 19:14:14,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:14:14,163 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 160 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 612 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:14,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 451 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 446 Invalid, 0 Unknown, 612 Unchecked, 0.2s Time] [2022-03-03 19:14:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-03-03 19:14:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 308. [2022-03-03 19:14:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 2.8566775244299674) internal successors, (877), 307 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 877 transitions. [2022-03-03 19:14:14,167 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 877 transitions. Word has length 20 [2022-03-03 19:14:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:14,167 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 877 transitions. [2022-03-03 19:14:14,167 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 19:14:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 877 transitions. [2022-03-03 19:14:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:14,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:14,167 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 19:14:14,183 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 19:14:14,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:14,375 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1807003561, now seen corresponding path program 27 times [2022-03-03 19:14:14,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:14,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839157280] [2022-03-03 19:14:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:14,518 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 19:14:14,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:14,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839157280] [2022-03-03 19:14:14,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839157280] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:14,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077196576] [2022-03-03 19:14:14,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:14,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:14,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:14,520 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 19:14:14,532 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 19:14:14,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:14,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:14,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:14,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:15,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:15,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:14:16,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:16,020 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 179 treesize of output 157 [2022-03-03 19:14:16,022 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 135 [2022-03-03 19:14:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:16,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:16,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:16,823 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:16,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:14:16,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:16,829 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:14:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:16,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077196576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:16,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:16,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:16,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182035305] [2022-03-03 19:14:16,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:16,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:16,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:16,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:16,907 INFO L87 Difference]: Start difference. First operand 308 states and 877 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 19:14:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:17,447 INFO L93 Difference]: Finished difference Result 486 states and 1395 transitions. [2022-03-03 19:14:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:14:17,447 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 19:14:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:17,448 INFO L225 Difference]: With dead ends: 486 [2022-03-03 19:14:17,448 INFO L226 Difference]: Without dead ends: 466 [2022-03-03 19:14:17,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:14:17,475 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 93 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:17,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 516 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 236 Unchecked, 0.1s Time] [2022-03-03 19:14:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-03-03 19:14:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 315. [2022-03-03 19:14:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.840764331210191) internal successors, (892), 314 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 892 transitions. [2022-03-03 19:14:17,480 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 892 transitions. Word has length 20 [2022-03-03 19:14:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:17,480 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 892 transitions. [2022-03-03 19:14:17,480 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 19:14:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 892 transitions. [2022-03-03 19:14:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:17,480 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:17,480 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 19:14:17,498 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 19:14:17,681 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,SelfDestructingSolverStorable178 [2022-03-03 19:14:17,681 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1515033113, now seen corresponding path program 28 times [2022-03-03 19:14:17,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:17,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608202291] [2022-03-03 19:14:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:17,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:17,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608202291] [2022-03-03 19:14:17,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608202291] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:17,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621972093] [2022-03-03 19:14:17,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:17,856 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 19:14:17,857 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 19:14:17,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:17,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:17,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:17,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:18,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:18,278 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-03-03 19:14:19,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:19,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 164 treesize of output 144 [2022-03-03 19:14:19,249 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 124 [2022-03-03 19:14:19,543 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 19:14:19,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:19,747 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:19,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:20,010 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:20,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:14:20,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:20,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:14:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:20,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621972093] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:20,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:20,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:20,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776742315] [2022-03-03 19:14:20,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:20,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:20,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:20,164 INFO L87 Difference]: Start difference. First operand 315 states and 892 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 19:14:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:20,742 INFO L93 Difference]: Finished difference Result 516 states and 1462 transitions. [2022-03-03 19:14:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:14:20,743 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 19:14:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:20,744 INFO L225 Difference]: With dead ends: 516 [2022-03-03 19:14:20,744 INFO L226 Difference]: Without dead ends: 491 [2022-03-03 19:14:20,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:14:20,744 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 108 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:20,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 404 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 443 Invalid, 0 Unknown, 345 Unchecked, 0.2s Time] [2022-03-03 19:14:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-03-03 19:14:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 315. [2022-03-03 19:14:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.8503184713375798) internal successors, (895), 314 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 895 transitions. [2022-03-03 19:14:20,748 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 895 transitions. Word has length 20 [2022-03-03 19:14:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:20,748 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 895 transitions. [2022-03-03 19:14:20,748 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 19:14:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 895 transitions. [2022-03-03 19:14:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:20,749 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:20,749 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 19:14:20,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:20,959 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,SelfDestructingSolverStorable179 [2022-03-03 19:14:20,959 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2139629105, now seen corresponding path program 29 times [2022-03-03 19:14:20,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:20,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040336936] [2022-03-03 19:14:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:20,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:21,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:21,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040336936] [2022-03-03 19:14:21,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040336936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:21,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912423455] [2022-03-03 19:14:21,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:21,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:21,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:21,214 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 19:14:21,264 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 19:14:21,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:21,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:21,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:21,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:21,562 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 114 treesize of output 98 [2022-03-03 19:14:22,149 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 154 treesize of output 134 [2022-03-03 19:14:22,151 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 114 [2022-03-03 19:14:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:22,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:22,656 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:22,657 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 78 treesize of output 72 [2022-03-03 19:14:22,872 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:14:22,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-03-03 19:14:22,874 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 88 treesize of output 70 [2022-03-03 19:14:22,896 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 19:14:22,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912423455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:22,896 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:22,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:14:22,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950719956] [2022-03-03 19:14:22,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:22,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:14:22,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:14:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:14:22,897 INFO L87 Difference]: Start difference. First operand 315 states and 895 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 19:14:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:24,852 INFO L93 Difference]: Finished difference Result 545 states and 1500 transitions. [2022-03-03 19:14:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:14:24,852 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 19:14:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:24,853 INFO L225 Difference]: With dead ends: 545 [2022-03-03 19:14:24,853 INFO L226 Difference]: Without dead ends: 478 [2022-03-03 19:14:24,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:14:24,854 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 187 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:24,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 350 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:14:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-03-03 19:14:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 323. [2022-03-03 19:14:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 2.847826086956522) internal successors, (917), 322 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 917 transitions. [2022-03-03 19:14:24,858 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 917 transitions. Word has length 20 [2022-03-03 19:14:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:24,858 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 917 transitions. [2022-03-03 19:14:24,858 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 19:14:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 917 transitions. [2022-03-03 19:14:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:24,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:24,858 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 19:14:24,874 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 19:14:25,073 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,SelfDestructingSolverStorable180 [2022-03-03 19:14:25,074 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash 160873035, now seen corresponding path program 30 times [2022-03-03 19:14:25,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:25,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537995916] [2022-03-03 19:14:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:25,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:25,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537995916] [2022-03-03 19:14:25,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537995916] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:25,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955765099] [2022-03-03 19:14:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:25,372 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 19:14:25,373 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 19:14:25,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:25,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:25,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:25,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:26,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:26,024 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-03-03 19:14:26,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:26,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 150 [2022-03-03 19:14:26,358 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 132 [2022-03-03 19:14:27,045 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 19:14:27,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:27,266 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:27,267 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 122 treesize of output 112 [2022-03-03 19:14:27,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:27,598 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 102 treesize of output 94 [2022-03-03 19:14:27,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:27,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:14:27,681 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 19:14:27,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955765099] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:27,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:27,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:27,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307715305] [2022-03-03 19:14:27,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:27,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:27,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:27,682 INFO L87 Difference]: Start difference. First operand 323 states and 917 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 19:14:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:28,239 INFO L93 Difference]: Finished difference Result 486 states and 1383 transitions. [2022-03-03 19:14:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:14:28,240 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 19:14:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:28,240 INFO L225 Difference]: With dead ends: 486 [2022-03-03 19:14:28,240 INFO L226 Difference]: Without dead ends: 479 [2022-03-03 19:14:28,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:14:28,241 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:28,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 344 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 426 Invalid, 0 Unknown, 110 Unchecked, 0.2s Time] [2022-03-03 19:14:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-03-03 19:14:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 328. [2022-03-03 19:14:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.840978593272171) internal successors, (929), 327 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 929 transitions. [2022-03-03 19:14:28,245 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 929 transitions. Word has length 20 [2022-03-03 19:14:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:28,245 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 929 transitions. [2022-03-03 19:14:28,245 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 19:14:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 929 transitions. [2022-03-03 19:14:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:28,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:28,246 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 19:14:28,261 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 19:14:28,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:28,462 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 183469583, now seen corresponding path program 31 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 [2028715002] [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 19:14:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,781 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 19:14:28,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:28,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028715002] [2022-03-03 19:14:28,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028715002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:28,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092232713] [2022-03-03 19:14:28,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:28,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:28,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:28,783 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 19:14:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:28,825 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 19:14:28,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:28,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:29,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:29,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 96 treesize of output 82 [2022-03-03 19:14:29,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:29,818 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 148 [2022-03-03 19:14:29,820 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 148 treesize of output 130 [2022-03-03 19:14:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:30,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:30,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:30,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:14:31,284 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:31,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 114 [2022-03-03 19:14:31,289 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:31,290 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 106 treesize of output 96 [2022-03-03 19:14:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:31,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092232713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:31,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:31,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:31,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853528609] [2022-03-03 19:14:31,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:31,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:31,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:31,460 INFO L87 Difference]: Start difference. First operand 328 states and 929 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 19:14:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:32,847 INFO L93 Difference]: Finished difference Result 740 states and 2018 transitions. [2022-03-03 19:14:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:14:32,847 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 19:14:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:32,849 INFO L225 Difference]: With dead ends: 740 [2022-03-03 19:14:32,849 INFO L226 Difference]: Without dead ends: 706 [2022-03-03 19:14:32,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=1585, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:14:32,849 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 133 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:32,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 614 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 777 Invalid, 0 Unknown, 232 Unchecked, 0.3s Time] [2022-03-03 19:14:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-03 19:14:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 331. [2022-03-03 19:14:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.8454545454545452) internal successors, (939), 330 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 939 transitions. [2022-03-03 19:14:32,878 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 939 transitions. Word has length 20 [2022-03-03 19:14:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:32,878 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 939 transitions. [2022-03-03 19:14:32,878 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 19:14:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 939 transitions. [2022-03-03 19:14:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:32,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:32,879 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 19:14:32,909 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 19:14:33,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:33,098 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1393872147, now seen corresponding path program 32 times [2022-03-03 19:14:33,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:33,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987864191] [2022-03-03 19:14:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:33,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:33,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987864191] [2022-03-03 19:14:33,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987864191] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:33,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627762081] [2022-03-03 19:14:33,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:33,369 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 19:14:33,370 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 19:14:33,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:33,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:33,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:33,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:34,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:34,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:14:34,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:34,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 172 treesize of output 152 [2022-03-03 19:14:34,807 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 152 treesize of output 132 [2022-03-03 19:14:35,168 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 19:14:35,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:35,338 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:35,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:35,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:35,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:14:35,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:35,605 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 86 treesize of output 78 [2022-03-03 19:14:35,709 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 19:14:35,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627762081] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:35,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:35,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:35,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987219104] [2022-03-03 19:14:35,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:35,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:35,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:35,711 INFO L87 Difference]: Start difference. First operand 331 states and 939 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 19:14:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:36,254 INFO L93 Difference]: Finished difference Result 486 states and 1379 transitions. [2022-03-03 19:14:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:14:36,254 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 19:14:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:36,255 INFO L225 Difference]: With dead ends: 486 [2022-03-03 19:14:36,255 INFO L226 Difference]: Without dead ends: 466 [2022-03-03 19:14:36,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:14:36,256 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 45 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:36,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 341 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 391 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-03-03 19:14:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-03-03 19:14:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 335. [2022-03-03 19:14:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.8323353293413174) internal successors, (946), 334 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 946 transitions. [2022-03-03 19:14:36,261 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 946 transitions. Word has length 20 [2022-03-03 19:14:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:36,261 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 946 transitions. [2022-03-03 19:14:36,262 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 19:14:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 946 transitions. [2022-03-03 19:14:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:36,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:36,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:36,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-03 19:14:36,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-03-03 19:14:36,485 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -420941525, now seen corresponding path program 33 times [2022-03-03 19:14:36,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:36,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021448261] [2022-03-03 19:14:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:36,688 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 19:14:36,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:36,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021448261] [2022-03-03 19:14:36,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021448261] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:36,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560924146] [2022-03-03 19:14:36,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:14:36,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:36,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:36,690 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 19:14:36,691 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 19:14:36,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:14:36,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:36,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:36,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:37,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:37,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:14:38,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:38,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 162 treesize of output 144 [2022-03-03 19:14:38,033 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 126 [2022-03-03 19:14:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:38,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:38,581 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:38,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:38,842 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:38,842 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 102 treesize of output 94 [2022-03-03 19:14:38,848 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:38,848 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:14:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:38,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560924146] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:38,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:38,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:38,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091459497] [2022-03-03 19:14:38,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:38,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:38,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:38,934 INFO L87 Difference]: Start difference. First operand 335 states and 946 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 19:14:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:39,656 INFO L93 Difference]: Finished difference Result 550 states and 1553 transitions. [2022-03-03 19:14:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:14:39,656 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 19:14:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:39,657 INFO L225 Difference]: With dead ends: 550 [2022-03-03 19:14:39,657 INFO L226 Difference]: Without dead ends: 525 [2022-03-03 19:14:39,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:14:39,657 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:39,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 488 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 587 Invalid, 0 Unknown, 316 Unchecked, 0.2s Time] [2022-03-03 19:14:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-03-03 19:14:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 332. [2022-03-03 19:14:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.8429003021148036) internal successors, (941), 331 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 941 transitions. [2022-03-03 19:14:39,661 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 941 transitions. Word has length 20 [2022-03-03 19:14:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:39,661 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 941 transitions. [2022-03-03 19:14:39,662 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 19:14:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 941 transitions. [2022-03-03 19:14:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:39,662 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:39,662 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 19:14:39,677 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 19:14:39,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:39,877 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:39,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1555865241, now seen corresponding path program 34 times [2022-03-03 19:14:39,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:39,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604355012] [2022-03-03 19:14:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:39,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:40,084 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 19:14:40,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:40,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604355012] [2022-03-03 19:14:40,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604355012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:40,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13120350] [2022-03-03 19:14:40,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:14:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:40,086 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 19:14:40,121 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 19:14:40,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:14:40,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:40,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:40,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:40,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:14:41,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:41,829 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 160 treesize of output 140 [2022-03-03 19:14:41,831 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 140 treesize of output 120 [2022-03-03 19:14:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:42,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:42,369 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:42,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:42,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:42,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:14:42,608 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:42,608 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 100 treesize of output 90 [2022-03-03 19:14:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:42,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13120350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:42,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:42,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:42,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451633855] [2022-03-03 19:14:42,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:42,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:42,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:42,695 INFO L87 Difference]: Start difference. First operand 332 states and 941 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 19:14:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:43,115 INFO L93 Difference]: Finished difference Result 533 states and 1499 transitions. [2022-03-03 19:14:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:14:43,116 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 19:14:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:43,117 INFO L225 Difference]: With dead ends: 533 [2022-03-03 19:14:43,117 INFO L226 Difference]: Without dead ends: 523 [2022-03-03 19:14:43,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:14:43,119 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:43,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 444 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 395 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-03-03 19:14:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-03-03 19:14:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 337. [2022-03-03 19:14:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 2.8422619047619047) internal successors, (955), 336 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 955 transitions. [2022-03-03 19:14:43,124 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 955 transitions. Word has length 20 [2022-03-03 19:14:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:43,124 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 955 transitions. [2022-03-03 19:14:43,124 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 19:14:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 955 transitions. [2022-03-03 19:14:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:43,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:43,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:14:43,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:43,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:43,340 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1744822361, now seen corresponding path program 35 times [2022-03-03 19:14:43,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:43,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474906781] [2022-03-03 19:14:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:43,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:43,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474906781] [2022-03-03 19:14:43,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474906781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:43,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970276292] [2022-03-03 19:14:43,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:14:43,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:43,500 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 19:14:43,501 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 19:14:43,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:43,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:43,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:43,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:43,697 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 112 treesize of output 96 [2022-03-03 19:14:44,148 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 155 treesize of output 137 [2022-03-03 19:14:44,149 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 137 treesize of output 119 [2022-03-03 19:14:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:44,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:44,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:44,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-03-03 19:14:44,887 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:14:44,887 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 106 treesize of output 91 [2022-03-03 19:14:44,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-03-03 19:14:44,918 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 19:14:44,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970276292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:44,918 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:44,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:14:44,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041353700] [2022-03-03 19:14:44,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:44,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:14:44,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:44,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:14:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:14:44,919 INFO L87 Difference]: Start difference. First operand 337 states and 955 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 19:14:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:48,951 INFO L93 Difference]: Finished difference Result 708 states and 1904 transitions. [2022-03-03 19:14:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:14:48,951 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 19:14:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:48,952 INFO L225 Difference]: With dead ends: 708 [2022-03-03 19:14:48,952 INFO L226 Difference]: Without dead ends: 622 [2022-03-03 19:14:48,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:14:48,958 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 251 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:48,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 489 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:14:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-03-03 19:14:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 336. [2022-03-03 19:14:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.8417910447761194) internal successors, (952), 335 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 952 transitions. [2022-03-03 19:14:48,965 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 952 transitions. Word has length 20 [2022-03-03 19:14:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:48,965 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 952 transitions. [2022-03-03 19:14:48,965 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 19:14:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 952 transitions. [2022-03-03 19:14:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:48,965 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:48,965 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 19:14:48,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 19:14:49,171 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,SelfDestructingSolverStorable186 [2022-03-03 19:14:49,171 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 169431105, now seen corresponding path program 36 times [2022-03-03 19:14:49,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:49,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133252269] [2022-03-03 19:14:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:49,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:49,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133252269] [2022-03-03 19:14:49,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133252269] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:49,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136193188] [2022-03-03 19:14:49,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:14:49,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:49,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:49,363 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 19:14:49,364 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 19:14:49,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:14:49,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:49,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:49,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:49,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:49,904 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:14:51,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:51,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 176 treesize of output 156 [2022-03-03 19:14:51,743 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 136 [2022-03-03 19:14:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:52,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:52,432 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:52,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:14:52,709 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:52,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:14:52,716 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:52,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:14:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:52,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136193188] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:52,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:52,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:52,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902817540] [2022-03-03 19:14:52,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:52,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:52,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:52,813 INFO L87 Difference]: Start difference. First operand 336 states and 952 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 19:14:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:53,474 INFO L93 Difference]: Finished difference Result 510 states and 1458 transitions. [2022-03-03 19:14:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:14:53,475 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 19:14:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:53,476 INFO L225 Difference]: With dead ends: 510 [2022-03-03 19:14:53,476 INFO L226 Difference]: Without dead ends: 490 [2022-03-03 19:14:53,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:14:53,476 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:53,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 407 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 409 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2022-03-03 19:14:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-03-03 19:14:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 342. [2022-03-03 19:14:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.8299120234604107) internal successors, (965), 341 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 19:14:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 965 transitions. [2022-03-03 19:14:53,480 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 965 transitions. Word has length 20 [2022-03-03 19:14:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:53,480 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 965 transitions. [2022-03-03 19:14:53,480 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 19:14:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 965 transitions. [2022-03-03 19:14:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:53,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:53,481 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 19:14:53,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-03-03 19:14:53,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:53,681 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:53,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1142361727, now seen corresponding path program 37 times [2022-03-03 19:14:53,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:53,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607860478] [2022-03-03 19:14:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:53,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:53,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607860478] [2022-03-03 19:14:53,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607860478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:53,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373214783] [2022-03-03 19:14:53,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:14:53,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:53,940 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 19:14:53,942 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 19:14:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:53,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:14:53,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:54,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:54,367 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-03-03 19:14:55,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:55,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 147 [2022-03-03 19:14:55,854 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 147 treesize of output 127 [2022-03-03 19:14:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:14:56,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:14:56,507 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:56,507 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 90 treesize of output 84 [2022-03-03 19:14:56,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:56,828 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 113 treesize of output 105 [2022-03-03 19:14:56,833 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:14:56,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:14:56,942 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 19:14:56,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373214783] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:14:56,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:14:56,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:14:56,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329969014] [2022-03-03 19:14:56,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:14:56,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:14:56,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:14:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:14:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:14:56,943 INFO L87 Difference]: Start difference. First operand 342 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 19:14:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:14:57,450 INFO L93 Difference]: Finished difference Result 490 states and 1409 transitions. [2022-03-03 19:14:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:14:57,450 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 19:14:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:14:57,451 INFO L225 Difference]: With dead ends: 490 [2022-03-03 19:14:57,451 INFO L226 Difference]: Without dead ends: 479 [2022-03-03 19:14:57,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:14:57,451 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 59 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:14:57,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 420 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 452 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-03-03 19:14:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-03-03 19:14:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 338. [2022-03-03 19:14:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.8427299703264093) internal successors, (958), 337 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:14:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 958 transitions. [2022-03-03 19:14:57,455 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 958 transitions. Word has length 20 [2022-03-03 19:14:57,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:14:57,456 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 958 transitions. [2022-03-03 19:14:57,456 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 19:14:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 958 transitions. [2022-03-03 19:14:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:14:57,456 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:14:57,456 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 19:14:57,483 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 19:14:57,672 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,SelfDestructingSolverStorable188 [2022-03-03 19:14:57,672 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:14:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:14:57,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1006059539, now seen corresponding path program 38 times [2022-03-03 19:14:57,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:14:57,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031564008] [2022-03-03 19:14:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:14:57,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:14:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:14:57,872 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 19:14:57,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:14:57,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031564008] [2022-03-03 19:14:57,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031564008] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:14:57,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660086016] [2022-03-03 19:14:57,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:14:57,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:14:57,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:14:57,884 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 19:14:57,914 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 19:14:57,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:14:57,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:14:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:14:57,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:14:58,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:14:58,530 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-03-03 19:15:00,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:00,080 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 145 [2022-03-03 19:15:00,082 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 127 [2022-03-03 19:15:00,716 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 19:15:00,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:01,038 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:01,039 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 90 treesize of output 84 [2022-03-03 19:15:01,351 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:01,352 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:15:01,360 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:01,360 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 86 treesize of output 78 [2022-03-03 19:15:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:01,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660086016] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:01,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:01,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:01,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526771376] [2022-03-03 19:15:01,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:01,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:01,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:01,504 INFO L87 Difference]: Start difference. First operand 338 states and 958 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 19:15:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:02,763 INFO L93 Difference]: Finished difference Result 732 states and 2095 transitions. [2022-03-03 19:15:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:15:02,763 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 19:15:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:02,764 INFO L225 Difference]: With dead ends: 732 [2022-03-03 19:15:02,764 INFO L226 Difference]: Without dead ends: 705 [2022-03-03 19:15:02,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:15:02,765 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 111 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:02,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 783 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 906 Invalid, 0 Unknown, 485 Unchecked, 0.4s Time] [2022-03-03 19:15:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-03 19:15:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 368. [2022-03-03 19:15:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.861035422343324) internal successors, (1050), 367 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1050 transitions. [2022-03-03 19:15:02,770 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1050 transitions. Word has length 20 [2022-03-03 19:15:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:02,770 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1050 transitions. [2022-03-03 19:15:02,770 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 19:15:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1050 transitions. [2022-03-03 19:15:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:02,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:02,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:02,786 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 19:15:02,973 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,SelfDestructingSolverStorable189 [2022-03-03 19:15:02,973 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash -33128917, now seen corresponding path program 39 times [2022-03-03 19:15:02,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:02,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658066805] [2022-03-03 19:15:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:02,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:03,177 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 19:15:03,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:03,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658066805] [2022-03-03 19:15:03,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658066805] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:03,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973255360] [2022-03-03 19:15:03,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:03,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:03,179 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 19:15:03,180 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 19:15:03,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:15:03,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:03,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:03,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:03,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:03,703 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 140 treesize of output 122 [2022-03-03 19:15:05,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:05,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 178 treesize of output 158 [2022-03-03 19:15:05,224 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 158 treesize of output 138 [2022-03-03 19:15:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:05,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:05,757 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:05,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 19:15:05,997 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:05,997 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:15:06,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:06,004 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 86 treesize of output 78 [2022-03-03 19:15:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:06,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973255360] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:06,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:06,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:06,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512189492] [2022-03-03 19:15:06,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:06,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:06,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:06,098 INFO L87 Difference]: Start difference. First operand 368 states and 1050 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 19:15:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:06,614 INFO L93 Difference]: Finished difference Result 522 states and 1500 transitions. [2022-03-03 19:15:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:15:06,614 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 19:15:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:06,615 INFO L225 Difference]: With dead ends: 522 [2022-03-03 19:15:06,615 INFO L226 Difference]: Without dead ends: 499 [2022-03-03 19:15:06,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:15:06,615 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:06,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 447 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 465 Invalid, 0 Unknown, 260 Unchecked, 0.2s Time] [2022-03-03 19:15:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-03-03 19:15:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 367. [2022-03-03 19:15:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 2.871584699453552) internal successors, (1051), 366 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1051 transitions. [2022-03-03 19:15:06,620 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1051 transitions. Word has length 20 [2022-03-03 19:15:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:06,620 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 1051 transitions. [2022-03-03 19:15:06,620 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 19:15:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1051 transitions. [2022-03-03 19:15:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:06,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:06,620 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 19:15:06,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:06,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:06,835 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1326743635, now seen corresponding path program 40 times [2022-03-03 19:15:06,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:06,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355007353] [2022-03-03 19:15:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:07,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:07,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355007353] [2022-03-03 19:15:07,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355007353] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:07,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042772151] [2022-03-03 19:15:07,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:15:07,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:07,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:07,053 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 19:15:07,054 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 19:15:07,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:15:07,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:07,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:15:07,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:07,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:07,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:15:08,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:08,465 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 147 treesize of output 129 [2022-03-03 19:15:08,467 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 111 [2022-03-03 19:15:09,013 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 19:15:09,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:09,332 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:09,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 19:15:09,710 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:09,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:15:09,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:09,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:15:09,870 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 19:15:09,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042772151] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:09,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:09,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:09,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066990269] [2022-03-03 19:15:09,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:09,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:09,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:09,871 INFO L87 Difference]: Start difference. First operand 367 states and 1051 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 19:15:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:10,446 INFO L93 Difference]: Finished difference Result 532 states and 1540 transitions. [2022-03-03 19:15:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:15:10,446 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 19:15:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:10,447 INFO L225 Difference]: With dead ends: 532 [2022-03-03 19:15:10,447 INFO L226 Difference]: Without dead ends: 502 [2022-03-03 19:15:10,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:15:10,447 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 77 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:10,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 461 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 501 Invalid, 0 Unknown, 242 Unchecked, 0.2s Time] [2022-03-03 19:15:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-03-03 19:15:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 387. [2022-03-03 19:15:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 2.883419689119171) internal successors, (1113), 386 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1113 transitions. [2022-03-03 19:15:10,452 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1113 transitions. Word has length 20 [2022-03-03 19:15:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:10,452 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 1113 transitions. [2022-03-03 19:15:10,452 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 19:15:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1113 transitions. [2022-03-03 19:15:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:10,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:10,453 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 19:15:10,469 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 19:15:10,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:10,659 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:10,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2136108201, now seen corresponding path program 41 times [2022-03-03 19:15:10,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:10,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531429257] [2022-03-03 19:15:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:10,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:10,850 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 19:15:10,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:10,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531429257] [2022-03-03 19:15:10,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531429257] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:10,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680790093] [2022-03-03 19:15:10,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:15:10,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:10,851 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 19:15:10,852 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 19:15:10,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:10,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:10,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:11,160 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 112 treesize of output 96 [2022-03-03 19:15:11,895 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 132 [2022-03-03 19:15:11,898 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 114 [2022-03-03 19:15:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:12,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:12,653 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:12,653 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 78 treesize of output 72 [2022-03-03 19:15:12,852 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:15:12,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 77 [2022-03-03 19:15:12,856 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 74 treesize of output 58 [2022-03-03 19:15:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:12,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680790093] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:12,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:12,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:15:12,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988508322] [2022-03-03 19:15:12,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:12,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:15:12,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:12,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:15:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:15:12,891 INFO L87 Difference]: Start difference. First operand 387 states and 1113 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 19:15:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:16,442 INFO L93 Difference]: Finished difference Result 734 states and 2010 transitions. [2022-03-03 19:15:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:15:16,443 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 19:15:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:16,444 INFO L225 Difference]: With dead ends: 734 [2022-03-03 19:15:16,444 INFO L226 Difference]: Without dead ends: 650 [2022-03-03 19:15:16,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=318, Invalid=1488, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:15:16,444 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 218 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:16,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 423 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:15:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-03-03 19:15:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 334. [2022-03-03 19:15:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.8528528528528527) internal successors, (950), 333 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 950 transitions. [2022-03-03 19:15:16,449 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 950 transitions. Word has length 20 [2022-03-03 19:15:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:16,449 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 950 transitions. [2022-03-03 19:15:16,449 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 19:15:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 950 transitions. [2022-03-03 19:15:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:16,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:16,450 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 19:15:16,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-03 19:15:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:16,666 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2000997617, now seen corresponding path program 42 times [2022-03-03 19:15:16,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:16,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523178784] [2022-03-03 19:15:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:16,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:16,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:16,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523178784] [2022-03-03 19:15:16,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523178784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:16,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817293352] [2022-03-03 19:15:16,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:15:16,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:16,870 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 19:15:16,870 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 19:15:16,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:15:16,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:16,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:16,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:17,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:17,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 96 treesize of output 82 [2022-03-03 19:15:18,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:18,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 166 treesize of output 146 [2022-03-03 19:15:18,365 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 126 [2022-03-03 19:15:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:19,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:19,364 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:19,364 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 98 [2022-03-03 19:15:19,608 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:19,608 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 102 treesize of output 94 [2022-03-03 19:15:19,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:19,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:15:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:19,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817293352] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:19,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:19,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:19,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648608038] [2022-03-03 19:15:19,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:19,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:19,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:19,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:19,695 INFO L87 Difference]: Start difference. First operand 334 states and 950 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 19:15:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:20,420 INFO L93 Difference]: Finished difference Result 488 states and 1397 transitions. [2022-03-03 19:15:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:15:20,422 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 19:15:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:20,422 INFO L225 Difference]: With dead ends: 488 [2022-03-03 19:15:20,423 INFO L226 Difference]: Without dead ends: 481 [2022-03-03 19:15:20,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:15:20,426 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 127 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:20,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 242 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 371 Invalid, 0 Unknown, 321 Unchecked, 0.1s Time] [2022-03-03 19:15:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-03 19:15:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 335. [2022-03-03 19:15:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.8502994011976046) internal successors, (952), 334 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 952 transitions. [2022-03-03 19:15:20,430 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 952 transitions. Word has length 20 [2022-03-03 19:15:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:20,431 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 952 transitions. [2022-03-03 19:15:20,431 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 19:15:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 952 transitions. [2022-03-03 19:15:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:20,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:20,431 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 19:15:20,449 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 19:15:20,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2022-03-03 19:15:20,642 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1978401069, now seen corresponding path program 43 times [2022-03-03 19:15:20,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:20,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981580822] [2022-03-03 19:15:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:20,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:20,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:20,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981580822] [2022-03-03 19:15:20,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981580822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:20,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405713718] [2022-03-03 19:15:20,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:15:20,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:20,912 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 19:15:20,913 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 19:15:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:20,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:15:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:21,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:21,538 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 111 [2022-03-03 19:15:22,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:22,111 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 159 [2022-03-03 19:15:22,114 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 159 treesize of output 133 [2022-03-03 19:15:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:22,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:23,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:23,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:15:23,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:23,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:15:23,751 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:23,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:15:23,892 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 19:15:23,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405713718] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:23,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:23,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:23,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374429748] [2022-03-03 19:15:23,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:23,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:23,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:23,893 INFO L87 Difference]: Start difference. First operand 335 states and 952 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 19:15:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:25,860 INFO L93 Difference]: Finished difference Result 652 states and 1729 transitions. [2022-03-03 19:15:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:15:25,860 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 19:15:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:25,861 INFO L225 Difference]: With dead ends: 652 [2022-03-03 19:15:25,861 INFO L226 Difference]: Without dead ends: 618 [2022-03-03 19:15:25,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=255, Invalid=1815, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:15:25,861 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 210 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:25,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 534 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 722 Invalid, 0 Unknown, 455 Unchecked, 0.4s Time] [2022-03-03 19:15:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-03-03 19:15:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 339. [2022-03-03 19:15:25,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.8816568047337277) internal successors, (974), 338 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 974 transitions. [2022-03-03 19:15:25,866 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 974 transitions. Word has length 20 [2022-03-03 19:15:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:25,867 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 974 transitions. [2022-03-03 19:15:25,867 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 19:15:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 974 transitions. [2022-03-03 19:15:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:25,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:25,867 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 19:15:25,884 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 19:15:26,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:26,083 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash 116771883, now seen corresponding path program 44 times [2022-03-03 19:15:26,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:26,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244507627] [2022-03-03 19:15:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:26,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:26,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244507627] [2022-03-03 19:15:26,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244507627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:26,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488057467] [2022-03-03 19:15:26,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:26,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:26,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:26,380 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 19:15:26,381 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 19:15:26,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:26,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:26,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:26,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:27,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:27,158 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 90 [2022-03-03 19:15:27,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:27,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 178 treesize of output 158 [2022-03-03 19:15:27,713 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 138 [2022-03-03 19:15:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:28,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:29,190 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:29,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:15:29,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:29,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:15:29,525 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:29,526 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:15:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:29,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488057467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:29,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:29,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:29,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436063848] [2022-03-03 19:15:29,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:29,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:29,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:29,613 INFO L87 Difference]: Start difference. First operand 339 states and 974 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 19:15:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:30,856 INFO L93 Difference]: Finished difference Result 609 states and 1732 transitions. [2022-03-03 19:15:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:15:30,856 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 19:15:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:30,857 INFO L225 Difference]: With dead ends: 609 [2022-03-03 19:15:30,858 INFO L226 Difference]: Without dead ends: 595 [2022-03-03 19:15:30,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=221, Invalid=1501, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:15:30,858 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 145 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:30,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 320 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 488 Invalid, 0 Unknown, 310 Unchecked, 0.2s Time] [2022-03-03 19:15:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-03 19:15:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 345. [2022-03-03 19:15:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.9011627906976742) internal successors, (998), 344 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 998 transitions. [2022-03-03 19:15:30,863 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 998 transitions. Word has length 20 [2022-03-03 19:15:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:30,863 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 998 transitions. [2022-03-03 19:15:30,863 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 19:15:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 998 transitions. [2022-03-03 19:15:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:30,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:30,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:30,880 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 19:15:31,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:31,079 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:31,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1836304881, now seen corresponding path program 45 times [2022-03-03 19:15:31,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:31,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813529470] [2022-03-03 19:15:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:31,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:31,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813529470] [2022-03-03 19:15:31,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813529470] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:31,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95720935] [2022-03-03 19:15:31,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:31,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:31,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:31,380 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 19:15:31,380 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 19:15:31,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:15:31,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:31,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:31,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:32,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:32,106 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 120 treesize of output 104 [2022-03-03 19:15:32,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:32,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 160 [2022-03-03 19:15:32,605 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 160 treesize of output 140 [2022-03-03 19:15:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:33,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:33,869 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:33,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:15:34,191 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:34,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:15:34,197 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:34,197 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:15:34,278 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 19:15:34,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95720935] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:34,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:34,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:34,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608382264] [2022-03-03 19:15:34,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:34,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:34,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:34,279 INFO L87 Difference]: Start difference. First operand 345 states and 998 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 19:15:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:35,188 INFO L93 Difference]: Finished difference Result 505 states and 1505 transitions. [2022-03-03 19:15:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:15:35,188 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 19:15:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:35,189 INFO L225 Difference]: With dead ends: 505 [2022-03-03 19:15:35,189 INFO L226 Difference]: Without dead ends: 490 [2022-03-03 19:15:35,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:15:35,190 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:35,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 295 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 353 Invalid, 0 Unknown, 279 Unchecked, 0.1s Time] [2022-03-03 19:15:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-03-03 19:15:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 355. [2022-03-03 19:15:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.9124293785310735) internal successors, (1031), 354 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1031 transitions. [2022-03-03 19:15:35,194 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1031 transitions. Word has length 20 [2022-03-03 19:15:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:35,194 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 1031 transitions. [2022-03-03 19:15:35,194 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 19:15:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1031 transitions. [2022-03-03 19:15:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:35,195 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:35,195 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 19:15:35,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:35,412 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,SelfDestructingSolverStorable196 [2022-03-03 19:15:35,412 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash 142547367, now seen corresponding path program 46 times [2022-03-03 19:15:35,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:35,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203822327] [2022-03-03 19:15:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:35,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:35,721 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 19:15:35,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:35,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203822327] [2022-03-03 19:15:35,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203822327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:35,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585559671] [2022-03-03 19:15:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:15:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:35,723 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 19:15:35,724 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 19:15:35,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:15:35,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:35,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:15:35,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:36,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:36,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:15:36,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:36,673 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 152 [2022-03-03 19:15:36,675 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 152 treesize of output 130 [2022-03-03 19:15:37,586 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 19:15:37,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:37,942 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:37,942 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 103 treesize of output 95 [2022-03-03 19:15:38,309 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:38,310 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 118 treesize of output 108 [2022-03-03 19:15:38,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:38,315 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 100 treesize of output 90 [2022-03-03 19:15:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:38,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585559671] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:38,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:38,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:38,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541757667] [2022-03-03 19:15:38,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:38,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:38,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:38,424 INFO L87 Difference]: Start difference. First operand 355 states and 1031 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 19:15:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:38,930 INFO L93 Difference]: Finished difference Result 516 states and 1498 transitions. [2022-03-03 19:15:38,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:15:38,930 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 19:15:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:38,931 INFO L225 Difference]: With dead ends: 516 [2022-03-03 19:15:38,931 INFO L226 Difference]: Without dead ends: 509 [2022-03-03 19:15:38,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:15:38,931 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:38,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 331 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 370 Invalid, 0 Unknown, 129 Unchecked, 0.1s Time] [2022-03-03 19:15:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-03-03 19:15:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 363. [2022-03-03 19:15:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.93646408839779) internal successors, (1063), 362 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 1063 transitions. [2022-03-03 19:15:38,936 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 1063 transitions. Word has length 20 [2022-03-03 19:15:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:38,936 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 1063 transitions. [2022-03-03 19:15:38,936 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 19:15:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 1063 transitions. [2022-03-03 19:15:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:38,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:38,937 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 19:15:38,953 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 19:15:39,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:39,152 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:39,152 INFO L85 PathProgramCache]: Analyzing trace with hash 165143915, now seen corresponding path program 47 times [2022-03-03 19:15:39,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:39,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230510724] [2022-03-03 19:15:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:39,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:39,352 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 19:15:39,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:39,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230510724] [2022-03-03 19:15:39,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230510724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:39,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737354995] [2022-03-03 19:15:39,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:15:39,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:39,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:39,354 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 19:15:39,354 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 19:15:39,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:15:39,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:39,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:15:39,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:39,558 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 113 treesize of output 97 [2022-03-03 19:15:39,732 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 155 [2022-03-03 19:15:39,737 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 19:15:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:40,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:40,981 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:40,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 111 [2022-03-03 19:15:41,275 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:15:41,275 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 86 [2022-03-03 19:15:41,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 67 [2022-03-03 19:15:41,280 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 19:15:41,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737354995] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:41,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:41,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:15:41,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688008159] [2022-03-03 19:15:41,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:41,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:15:41,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:15:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:15:41,281 INFO L87 Difference]: Start difference. First operand 363 states and 1063 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 19:15:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:44,048 INFO L93 Difference]: Finished difference Result 622 states and 1705 transitions. [2022-03-03 19:15:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:15:44,048 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 19:15:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:44,049 INFO L225 Difference]: With dead ends: 622 [2022-03-03 19:15:44,049 INFO L226 Difference]: Without dead ends: 592 [2022-03-03 19:15:44,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:15:44,050 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 227 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:44,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 444 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:15:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-03-03 19:15:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 350. [2022-03-03 19:15:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.9398280802292263) internal successors, (1026), 349 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1026 transitions. [2022-03-03 19:15:44,055 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1026 transitions. Word has length 20 [2022-03-03 19:15:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:44,055 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1026 transitions. [2022-03-03 19:15:44,055 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 19:15:44,055 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1026 transitions. [2022-03-03 19:15:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:44,065 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:44,065 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 19:15:44,081 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 19:15:44,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:44,278 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1919598561, now seen corresponding path program 48 times [2022-03-03 19:15:44,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:44,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802048769] [2022-03-03 19:15:44,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:44,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:44,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:44,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802048769] [2022-03-03 19:15:44,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802048769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:44,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153491995] [2022-03-03 19:15:44,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:15:44,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:44,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:44,491 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 19:15:44,492 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 19:15:44,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:15:44,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:44,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:44,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:45,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:45,152 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-03-03 19:15:45,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:45,601 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 193 treesize of output 171 [2022-03-03 19:15:45,603 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 171 treesize of output 149 [2022-03-03 19:15:46,781 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 19:15:46,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:47,001 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:47,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:15:47,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:47,311 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 102 treesize of output 94 [2022-03-03 19:15:47,316 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:47,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:15:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:47,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153491995] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:47,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:47,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:47,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561503937] [2022-03-03 19:15:47,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:47,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:47,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:47,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:47,411 INFO L87 Difference]: Start difference. First operand 350 states and 1026 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 19:15:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:47,952 INFO L93 Difference]: Finished difference Result 523 states and 1524 transitions. [2022-03-03 19:15:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:15:47,952 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 19:15:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:47,953 INFO L225 Difference]: With dead ends: 523 [2022-03-03 19:15:47,953 INFO L226 Difference]: Without dead ends: 516 [2022-03-03 19:15:47,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:15:47,954 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 94 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:47,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 272 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 395 Invalid, 0 Unknown, 196 Unchecked, 0.1s Time] [2022-03-03 19:15:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-03-03 19:15:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 356. [2022-03-03 19:15:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.935211267605634) internal successors, (1042), 355 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1042 transitions. [2022-03-03 19:15:47,959 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1042 transitions. Word has length 20 [2022-03-03 19:15:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:47,959 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1042 transitions. [2022-03-03 19:15:47,959 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 19:15:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1042 transitions. [2022-03-03 19:15:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:47,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:47,959 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 19:15:47,977 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 19:15:48,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:48,176 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 820623553, now seen corresponding path program 49 times [2022-03-03 19:15:48,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:48,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553268731] [2022-03-03 19:15:48,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:48,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:48,425 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 19:15:48,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:48,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553268731] [2022-03-03 19:15:48,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553268731] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:48,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895073536] [2022-03-03 19:15:48,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:15:48,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:48,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:48,426 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 19:15:48,427 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 19:15:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:48,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:15:48,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:49,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:49,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:15:49,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:49,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 148 treesize of output 130 [2022-03-03 19:15:49,937 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 130 treesize of output 112 [2022-03-03 19:15:50,467 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 19:15:50,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:50,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:50,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:15:51,072 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:51,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:15:51,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:51,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:15:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:51,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895073536] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:51,167 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:51,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:51,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026560037] [2022-03-03 19:15:51,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:51,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:51,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:51,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:51,168 INFO L87 Difference]: Start difference. First operand 356 states and 1042 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 19:15:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:51,631 INFO L93 Difference]: Finished difference Result 506 states and 1471 transitions. [2022-03-03 19:15:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:15:51,631 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 19:15:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:51,632 INFO L225 Difference]: With dead ends: 506 [2022-03-03 19:15:51,632 INFO L226 Difference]: Without dead ends: 486 [2022-03-03 19:15:51,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:15:51,632 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:51,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 288 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 333 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2022-03-03 19:15:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-03-03 19:15:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 360. [2022-03-03 19:15:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.9220055710306405) internal successors, (1049), 359 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1049 transitions. [2022-03-03 19:15:51,637 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1049 transitions. Word has length 20 [2022-03-03 19:15:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:51,637 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 1049 transitions. [2022-03-03 19:15:51,637 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 19:15:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1049 transitions. [2022-03-03 19:15:51,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:51,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:51,637 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 19:15:51,653 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 19:15:51,853 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,SelfDestructingSolverStorable200 [2022-03-03 19:15:51,853 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1793554175, now seen corresponding path program 50 times [2022-03-03 19:15:51,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:51,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242020804] [2022-03-03 19:15:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:51,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:52,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:52,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242020804] [2022-03-03 19:15:52,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242020804] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:52,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434709063] [2022-03-03 19:15:52,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:52,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:52,069 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 19:15:52,085 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 19:15:52,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:52,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:52,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:52,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:52,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:52,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 140 treesize of output 122 [2022-03-03 19:15:53,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:53,955 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 154 [2022-03-03 19:15:53,957 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 134 [2022-03-03 19:15:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:54,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:54,619 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:54,620 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 90 treesize of output 84 [2022-03-03 19:15:54,951 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:54,951 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:15:54,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:15:54,958 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:15:55,054 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 19:15:55,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434709063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:55,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:55,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:15:55,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645605357] [2022-03-03 19:15:55,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:55,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:55,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:55,056 INFO L87 Difference]: Start difference. First operand 360 states and 1049 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 19:15:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:56,747 INFO L93 Difference]: Finished difference Result 687 states and 1968 transitions. [2022-03-03 19:15:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 19:15:56,747 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 19:15:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:56,748 INFO L225 Difference]: With dead ends: 687 [2022-03-03 19:15:56,748 INFO L226 Difference]: Without dead ends: 669 [2022-03-03 19:15:56,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:15:56,749 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 356 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:56,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 603 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 546 Invalid, 0 Unknown, 356 Unchecked, 0.2s Time] [2022-03-03 19:15:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-03 19:15:56,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 359. [2022-03-03 19:15:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.930167597765363) internal successors, (1049), 358 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1049 transitions. [2022-03-03 19:15:56,754 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1049 transitions. Word has length 20 [2022-03-03 19:15:56,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:56,754 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 1049 transitions. [2022-03-03 19:15:56,754 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 19:15:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1049 transitions. [2022-03-03 19:15:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:56,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:56,754 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 19:15:56,789 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 19:15:56,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-03-03 19:15:56,963 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:56,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1448958679, now seen corresponding path program 51 times [2022-03-03 19:15:56,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:56,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947095035] [2022-03-03 19:15:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:57,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:57,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947095035] [2022-03-03 19:15:57,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947095035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:57,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100218647] [2022-03-03 19:15:57,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:57,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:57,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:57,212 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 19:15:57,213 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 19:15:57,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:15:57,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:57,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:15:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:57,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:57,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 141 treesize of output 123 [2022-03-03 19:15:59,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:15:59,226 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 165 [2022-03-03 19:15:59,229 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 165 treesize of output 143 [2022-03-03 19:15:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:59,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:00,037 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:00,038 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 90 treesize of output 84 [2022-03-03 19:16:00,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:00,387 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 102 treesize of output 94 [2022-03-03 19:16:00,395 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:00,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:16:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:00,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100218647] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:00,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:00,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:00,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601666286] [2022-03-03 19:16:00,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:00,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:00,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:00,526 INFO L87 Difference]: Start difference. First operand 359 states and 1049 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 19:16:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:01,059 INFO L93 Difference]: Finished difference Result 525 states and 1523 transitions. [2022-03-03 19:16:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:16:01,060 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 19:16:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:01,060 INFO L225 Difference]: With dead ends: 525 [2022-03-03 19:16:01,060 INFO L226 Difference]: Without dead ends: 505 [2022-03-03 19:16:01,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:01,061 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:01,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 251 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 146 Invalid, 0 Unknown, 216 Unchecked, 0.1s Time] [2022-03-03 19:16:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-03 19:16:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 372. [2022-03-03 19:16:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.921832884097035) internal successors, (1084), 371 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1084 transitions. [2022-03-03 19:16:01,065 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1084 transitions. Word has length 20 [2022-03-03 19:16:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:01,065 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 1084 transitions. [2022-03-03 19:16:01,065 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 19:16:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1084 transitions. [2022-03-03 19:16:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:01,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:01,066 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 19:16:01,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:01,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-03-03 19:16:01,266 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -476028057, now seen corresponding path program 52 times [2022-03-03 19:16:01,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:01,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360116020] [2022-03-03 19:16:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:01,529 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 19:16:01,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:01,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360116020] [2022-03-03 19:16:01,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360116020] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:01,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647157292] [2022-03-03 19:16:01,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:01,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:01,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:01,531 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 19:16:01,532 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 19:16:01,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:01,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:01,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:02,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:02,131 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-03-03 19:16:03,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:03,518 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 134 [2022-03-03 19:16:03,520 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 114 [2022-03-03 19:16:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:03,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:04,246 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:04,246 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:16:04,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:04,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:16:04,610 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:04,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:16:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:04,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647157292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:04,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:04,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:04,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513855600] [2022-03-03 19:16:04,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:04,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:04,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:04,757 INFO L87 Difference]: Start difference. First operand 372 states and 1084 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 19:16:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:05,540 INFO L93 Difference]: Finished difference Result 532 states and 1539 transitions. [2022-03-03 19:16:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:16:05,541 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 19:16:05,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:05,542 INFO L225 Difference]: With dead ends: 532 [2022-03-03 19:16:05,542 INFO L226 Difference]: Without dead ends: 507 [2022-03-03 19:16:05,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:16:05,542 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 91 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:05,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 394 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 374 Invalid, 0 Unknown, 242 Unchecked, 0.2s Time] [2022-03-03 19:16:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-03 19:16:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 374. [2022-03-03 19:16:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.927613941018767) internal successors, (1092), 373 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1092 transitions. [2022-03-03 19:16:05,546 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1092 transitions. Word has length 20 [2022-03-03 19:16:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:05,546 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1092 transitions. [2022-03-03 19:16:05,546 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 19:16:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1092 transitions. [2022-03-03 19:16:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:05,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:05,547 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 19:16:05,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:05,763 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,SelfDestructingSolverStorable203 [2022-03-03 19:16:05,763 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 883844495, now seen corresponding path program 53 times [2022-03-03 19:16:05,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:05,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477012574] [2022-03-03 19:16:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:06,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:06,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477012574] [2022-03-03 19:16:06,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477012574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:06,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279370319] [2022-03-03 19:16:06,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:06,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:06,037 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 19:16:06,038 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 19:16:06,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:06,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:06,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:06,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:06,330 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 112 treesize of output 96 [2022-03-03 19:16:06,706 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 147 treesize of output 127 [2022-03-03 19:16:06,708 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 127 treesize of output 107 [2022-03-03 19:16:07,141 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 19:16:07,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:07,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:07,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-03-03 19:16:07,730 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:16:07,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 88 [2022-03-03 19:16:07,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-03-03 19:16:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:07,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279370319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:07,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:07,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:16:07,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614792217] [2022-03-03 19:16:07,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:07,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:16:07,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:16:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:16:07,773 INFO L87 Difference]: Start difference. First operand 374 states and 1092 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 19:16:09,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:09,479 INFO L93 Difference]: Finished difference Result 560 states and 1580 transitions. [2022-03-03 19:16:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:09,479 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 19:16:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:09,480 INFO L225 Difference]: With dead ends: 560 [2022-03-03 19:16:09,480 INFO L226 Difference]: Without dead ends: 501 [2022-03-03 19:16:09,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:16:09,482 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 161 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:09,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 304 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-03-03 19:16:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 347. [2022-03-03 19:16:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 2.939306358381503) internal successors, (1017), 346 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1017 transitions. [2022-03-03 19:16:09,486 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1017 transitions. Word has length 20 [2022-03-03 19:16:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:09,486 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 1017 transitions. [2022-03-03 19:16:09,486 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 19:16:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1017 transitions. [2022-03-03 19:16:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:09,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:09,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:09,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:09,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:09,700 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1083145359, now seen corresponding path program 54 times [2022-03-03 19:16:09,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:09,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682625629] [2022-03-03 19:16:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:09,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:09,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:09,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682625629] [2022-03-03 19:16:09,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682625629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:09,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343776697] [2022-03-03 19:16:09,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:09,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:09,878 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 19:16:09,878 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 19:16:09,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:16:09,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:09,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:09,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:10,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:10,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 106 treesize of output 90 [2022-03-03 19:16:11,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:11,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 162 treesize of output 142 [2022-03-03 19:16:11,236 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 142 treesize of output 122 [2022-03-03 19:16:11,716 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 19:16:11,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:11,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:11,912 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 107 treesize of output 99 [2022-03-03 19:16:12,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:12,240 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 102 treesize of output 94 [2022-03-03 19:16:12,245 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:12,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:16:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:12,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343776697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:12,327 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:12,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:12,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503248937] [2022-03-03 19:16:12,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:12,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:12,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:12,328 INFO L87 Difference]: Start difference. First operand 347 states and 1017 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 19:16:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:12,835 INFO L93 Difference]: Finished difference Result 492 states and 1452 transitions. [2022-03-03 19:16:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:12,836 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 19:16:12,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:12,836 INFO L225 Difference]: With dead ends: 492 [2022-03-03 19:16:12,836 INFO L226 Difference]: Without dead ends: 485 [2022-03-03 19:16:12,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:12,837 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 70 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:12,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 254 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 166 Unchecked, 0.1s Time] [2022-03-03 19:16:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-03-03 19:16:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 352. [2022-03-03 19:16:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.9344729344729346) internal successors, (1030), 351 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1030 transitions. [2022-03-03 19:16:12,841 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1030 transitions. Word has length 20 [2022-03-03 19:16:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:12,841 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 1030 transitions. [2022-03-03 19:16:12,841 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 19:16:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1030 transitions. [2022-03-03 19:16:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:12,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:12,842 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 19:16:12,857 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 19:16:13,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:13,046 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash -911319797, now seen corresponding path program 55 times [2022-03-03 19:16:13,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:13,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750951571] [2022-03-03 19:16:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:13,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:13,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750951571] [2022-03-03 19:16:13,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750951571] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:13,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319053092] [2022-03-03 19:16:13,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:13,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:13,347 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 19:16:13,349 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 19:16:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:13,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:13,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:13,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:13,912 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 88 [2022-03-03 19:16:14,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:14,264 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 175 treesize of output 153 [2022-03-03 19:16:14,266 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 153 treesize of output 131 [2022-03-03 19:16:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:15,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:15,359 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:15,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:16:15,759 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:15,760 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 118 treesize of output 108 [2022-03-03 19:16:15,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:15,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:16:15,924 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 19:16:15,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319053092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:15,924 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:15,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:15,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822222940] [2022-03-03 19:16:15,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:15,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:15,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:15,925 INFO L87 Difference]: Start difference. First operand 352 states and 1030 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 19:16:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:16,543 INFO L93 Difference]: Finished difference Result 515 states and 1500 transitions. [2022-03-03 19:16:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:16:16,543 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 19:16:16,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:16,544 INFO L225 Difference]: With dead ends: 515 [2022-03-03 19:16:16,544 INFO L226 Difference]: Without dead ends: 508 [2022-03-03 19:16:16,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:16:16,544 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:16,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 233 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 314 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2022-03-03 19:16:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-03-03 19:16:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 357. [2022-03-03 19:16:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 2.9297752808988764) internal successors, (1043), 356 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1043 transitions. [2022-03-03 19:16:16,548 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1043 transitions. Word has length 20 [2022-03-03 19:16:16,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:16,548 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 1043 transitions. [2022-03-03 19:16:16,548 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 19:16:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1043 transitions. [2022-03-03 19:16:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:16,549 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:16,549 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 19:16:16,565 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 19:16:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-03-03 19:16:16,763 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -888723249, now seen corresponding path program 56 times [2022-03-03 19:16:16,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:16,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822174620] [2022-03-03 19:16:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:17,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:17,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822174620] [2022-03-03 19:16:17,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822174620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:17,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339765582] [2022-03-03 19:16:17,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:16:17,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:17,026 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 19:16:17,028 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 19:16:17,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:17,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:17,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:17,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:17,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:17,716 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 121 treesize of output 105 [2022-03-03 19:16:18,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:18,294 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 177 [2022-03-03 19:16:18,297 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 177 treesize of output 153 [2022-03-03 19:16:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:19,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:19,249 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:19,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-03-03 19:16:19,559 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:19,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:16:19,564 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:19,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:16:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:19,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339765582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:19,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:19,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:19,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242938939] [2022-03-03 19:16:19,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:19,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:19,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:19,672 INFO L87 Difference]: Start difference. First operand 357 states and 1043 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 19:16:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:20,252 INFO L93 Difference]: Finished difference Result 517 states and 1504 transitions. [2022-03-03 19:16:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:16:20,252 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 19:16:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:20,253 INFO L225 Difference]: With dead ends: 517 [2022-03-03 19:16:20,253 INFO L226 Difference]: Without dead ends: 510 [2022-03-03 19:16:20,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:16:20,254 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:20,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 349 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 551 Unchecked, 0.1s Time] [2022-03-03 19:16:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-03-03 19:16:20,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 360. [2022-03-03 19:16:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.9303621169916436) internal successors, (1052), 359 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1052 transitions. [2022-03-03 19:16:20,258 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1052 transitions. Word has length 20 [2022-03-03 19:16:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:20,258 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 1052 transitions. [2022-03-03 19:16:20,258 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 19:16:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1052 transitions. [2022-03-03 19:16:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:20,259 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:20,259 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 19:16:20,276 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 19:16:20,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:20,474 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1234850963, now seen corresponding path program 57 times [2022-03-03 19:16:20,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:20,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805626283] [2022-03-03 19:16:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:20,636 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 19:16:20,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:20,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805626283] [2022-03-03 19:16:20,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805626283] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:20,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315368939] [2022-03-03 19:16:20,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:16:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:20,637 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 19:16:20,638 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 19:16:20,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:16:20,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:20,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:21,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:21,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 126 treesize of output 108 [2022-03-03 19:16:21,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:21,579 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 188 treesize of output 166 [2022-03-03 19:16:21,581 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 166 treesize of output 144 [2022-03-03 19:16:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:22,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:22,690 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:22,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:16:22,925 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:22,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:16:22,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:22,958 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:16:23,083 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 19:16:23,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315368939] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:23,083 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:23,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:23,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52619841] [2022-03-03 19:16:23,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:23,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:23,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:23,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:23,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:23,084 INFO L87 Difference]: Start difference. First operand 360 states and 1052 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 19:16:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:23,812 INFO L93 Difference]: Finished difference Result 565 states and 1613 transitions. [2022-03-03 19:16:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:16:23,813 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 19:16:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:23,813 INFO L225 Difference]: With dead ends: 565 [2022-03-03 19:16:23,814 INFO L226 Difference]: Without dead ends: 551 [2022-03-03 19:16:23,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:16:23,814 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 120 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:23,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 297 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 324 Invalid, 0 Unknown, 164 Unchecked, 0.1s Time] [2022-03-03 19:16:23,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-03-03 19:16:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 361. [2022-03-03 19:16:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 2.9277777777777776) internal successors, (1054), 360 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1054 transitions. [2022-03-03 19:16:23,818 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1054 transitions. Word has length 20 [2022-03-03 19:16:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:23,818 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 1054 transitions. [2022-03-03 19:16:23,819 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 19:16:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1054 transitions. [2022-03-03 19:16:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:23,819 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:23,819 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 19:16:23,835 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 19:16:24,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:24,035 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:24,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1257447511, now seen corresponding path program 58 times [2022-03-03 19:16:24,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:24,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459661695] [2022-03-03 19:16:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:24,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:24,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459661695] [2022-03-03 19:16:24,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459661695] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:24,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025646642] [2022-03-03 19:16:24,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:24,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:24,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:24,244 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 19:16:24,244 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 19:16:24,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:24,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:24,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:24,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:24,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:16:25,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:25,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 199 treesize of output 175 [2022-03-03 19:16:25,413 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 151 [2022-03-03 19:16:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:26,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:26,783 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:26,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:16:27,154 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:27,154 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:16:27,162 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:27,162 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:16:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:27,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025646642] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:27,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:27,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:27,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426427938] [2022-03-03 19:16:27,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:27,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:27,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:27,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:27,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:27,312 INFO L87 Difference]: Start difference. First operand 361 states and 1054 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 19:16:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:28,340 INFO L93 Difference]: Finished difference Result 535 states and 1554 transitions. [2022-03-03 19:16:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:16:28,341 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 19:16:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:28,341 INFO L225 Difference]: With dead ends: 535 [2022-03-03 19:16:28,342 INFO L226 Difference]: Without dead ends: 515 [2022-03-03 19:16:28,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:16:28,342 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:28,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 469 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 553 Invalid, 0 Unknown, 174 Unchecked, 0.2s Time] [2022-03-03 19:16:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-03-03 19:16:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 361. [2022-03-03 19:16:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 2.9277777777777776) internal successors, (1054), 360 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1054 transitions. [2022-03-03 19:16:28,346 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1054 transitions. Word has length 20 [2022-03-03 19:16:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:28,346 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 1054 transitions. [2022-03-03 19:16:28,346 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 19:16:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1054 transitions. [2022-03-03 19:16:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:28,347 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:28,347 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 19:16:28,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:28,562 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,SelfDestructingSolverStorable209 [2022-03-03 19:16:28,563 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1376966201, now seen corresponding path program 59 times [2022-03-03 19:16:28,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:28,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199495690] [2022-03-03 19:16:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:28,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:28,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:28,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199495690] [2022-03-03 19:16:28,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199495690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:28,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740489228] [2022-03-03 19:16:28,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:28,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:28,720 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 19:16:28,721 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 19:16:28,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:28,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:28,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:28,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:28,965 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 93 treesize of output 79 [2022-03-03 19:16:29,380 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 126 [2022-03-03 19:16:29,381 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 126 treesize of output 108 [2022-03-03 19:16:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:29,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:30,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:30,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:16:30,352 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:16:30,352 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 77 [2022-03-03 19:16:30,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-03-03 19:16:30,397 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 19:16:30,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740489228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:30,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:30,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:16:30,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556042060] [2022-03-03 19:16:30,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:30,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:16:30,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:16:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:16:30,398 INFO L87 Difference]: Start difference. First operand 361 states and 1054 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 19:16:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:31,542 INFO L93 Difference]: Finished difference Result 540 states and 1550 transitions. [2022-03-03 19:16:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:16:31,543 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 19:16:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:31,543 INFO L225 Difference]: With dead ends: 540 [2022-03-03 19:16:31,543 INFO L226 Difference]: Without dead ends: 525 [2022-03-03 19:16:31,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:31,544 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 135 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:31,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 270 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:16:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-03-03 19:16:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 360. [2022-03-03 19:16:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.9275766016713094) internal successors, (1051), 359 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1051 transitions. [2022-03-03 19:16:31,548 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1051 transitions. Word has length 20 [2022-03-03 19:16:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:31,548 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 1051 transitions. [2022-03-03 19:16:31,548 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 19:16:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1051 transitions. [2022-03-03 19:16:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:31,549 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:31,549 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 19:16:31,566 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 19:16:31,763 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,SelfDestructingSolverStorable210 [2022-03-03 19:16:31,763 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash 181541049, now seen corresponding path program 60 times [2022-03-03 19:16:31,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:31,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886264872] [2022-03-03 19:16:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:32,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:32,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886264872] [2022-03-03 19:16:32,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886264872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:32,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153690795] [2022-03-03 19:16:32,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:32,041 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 19:16:32,042 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 19:16:32,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:16:32,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:32,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:32,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:32,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:32,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 104 [2022-03-03 19:16:33,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:33,302 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 183 treesize of output 161 [2022-03-03 19:16:33,304 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 161 treesize of output 139 [2022-03-03 19:16:34,114 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 19:16:34,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:34,340 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:34,340 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 122 treesize of output 112 [2022-03-03 19:16:34,584 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:34,584 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 102 treesize of output 94 [2022-03-03 19:16:34,589 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:34,589 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 86 treesize of output 78 [2022-03-03 19:16:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:34,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153690795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:34,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:34,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:34,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926126890] [2022-03-03 19:16:34,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:34,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:34,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:34,677 INFO L87 Difference]: Start difference. First operand 360 states and 1051 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 19:16:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:35,306 INFO L93 Difference]: Finished difference Result 516 states and 1507 transitions. [2022-03-03 19:16:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:16:35,306 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 19:16:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:35,307 INFO L225 Difference]: With dead ends: 516 [2022-03-03 19:16:35,307 INFO L226 Difference]: Without dead ends: 509 [2022-03-03 19:16:35,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:16:35,307 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 111 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:35,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 212 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 201 Unchecked, 0.1s Time] [2022-03-03 19:16:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-03-03 19:16:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 362. [2022-03-03 19:16:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.9335180055401664) internal successors, (1059), 361 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1059 transitions. [2022-03-03 19:16:35,312 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1059 transitions. Word has length 20 [2022-03-03 19:16:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:35,312 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 1059 transitions. [2022-03-03 19:16:35,312 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 19:16:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1059 transitions. [2022-03-03 19:16:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:35,312 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:35,312 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 19:16:35,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:35,528 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,SelfDestructingSolverStorable211 [2022-03-03 19:16:35,528 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash 204137597, now seen corresponding path program 61 times [2022-03-03 19:16:35,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:35,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835006112] [2022-03-03 19:16:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:35,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:35,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835006112] [2022-03-03 19:16:35,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835006112] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:35,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157721668] [2022-03-03 19:16:35,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:35,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:35,693 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 19:16:35,694 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 19:16:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:35,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:35,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:36,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:36,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 104 [2022-03-03 19:16:36,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:36,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 189 treesize of output 169 [2022-03-03 19:16:36,550 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 149 [2022-03-03 19:16:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:37,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:37,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:37,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:16:37,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:37,589 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 113 treesize of output 105 [2022-03-03 19:16:37,594 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:37,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:16:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:37,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157721668] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:37,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:37,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:37,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112144181] [2022-03-03 19:16:37,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:37,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:37,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:37,698 INFO L87 Difference]: Start difference. First operand 362 states and 1059 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 19:16:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:39,016 INFO L93 Difference]: Finished difference Result 680 states and 1840 transitions. [2022-03-03 19:16:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:16:39,016 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 19:16:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:39,017 INFO L225 Difference]: With dead ends: 680 [2022-03-03 19:16:39,017 INFO L226 Difference]: Without dead ends: 646 [2022-03-03 19:16:39,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=240, Invalid=1740, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:16:39,031 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 188 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:39,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 437 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 648 Invalid, 0 Unknown, 35 Unchecked, 0.3s Time] [2022-03-03 19:16:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-03-03 19:16:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 371. [2022-03-03 19:16:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.964864864864865) internal successors, (1097), 370 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1097 transitions. [2022-03-03 19:16:39,037 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1097 transitions. Word has length 20 [2022-03-03 19:16:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:39,037 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 1097 transitions. [2022-03-03 19:16:39,037 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 19:16:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1097 transitions. [2022-03-03 19:16:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:39,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:39,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:39,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:39,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-03-03 19:16:39,267 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1995656747, now seen corresponding path program 62 times [2022-03-03 19:16:39,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:39,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749049041] [2022-03-03 19:16:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:39,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:39,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:39,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749049041] [2022-03-03 19:16:39,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749049041] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:39,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007875873] [2022-03-03 19:16:39,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:16:39,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:39,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:39,463 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 19:16:39,482 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 19:16:39,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:39,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:39,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:39,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 96 treesize of output 82 [2022-03-03 19:16:40,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:40,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 150 [2022-03-03 19:16:40,284 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 132 [2022-03-03 19:16:40,993 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 19:16:40,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:41,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:41,213 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 122 treesize of output 112 [2022-03-03 19:16:41,457 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:41,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:16:41,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:41,463 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 86 treesize of output 78 [2022-03-03 19:16:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:41,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007875873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:41,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:41,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:41,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614326960] [2022-03-03 19:16:41,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:41,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:41,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:41,564 INFO L87 Difference]: Start difference. First operand 371 states and 1097 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 19:16:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:42,223 INFO L93 Difference]: Finished difference Result 520 states and 1529 transitions. [2022-03-03 19:16:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:16:42,223 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 19:16:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:42,224 INFO L225 Difference]: With dead ends: 520 [2022-03-03 19:16:42,224 INFO L226 Difference]: Without dead ends: 513 [2022-03-03 19:16:42,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:16:42,225 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:42,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 262 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 312 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-03-03 19:16:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-03-03 19:16:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 371. [2022-03-03 19:16:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.964864864864865) internal successors, (1097), 370 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1097 transitions. [2022-03-03 19:16:42,229 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1097 transitions. Word has length 20 [2022-03-03 19:16:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:42,229 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 1097 transitions. [2022-03-03 19:16:42,229 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 19:16:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1097 transitions. [2022-03-03 19:16:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:42,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:42,230 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 19:16:42,245 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 19:16:42,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:42,443 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash -276123749, now seen corresponding path program 63 times [2022-03-03 19:16:42,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:42,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129805432] [2022-03-03 19:16:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:42,709 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 19:16:42,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:42,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129805432] [2022-03-03 19:16:42,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129805432] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:42,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384755588] [2022-03-03 19:16:42,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:16:42,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:42,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:42,711 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 19:16:42,711 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 19:16:42,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:16:42,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:42,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:43,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:43,240 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-03-03 19:16:43,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:43,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 181 treesize of output 161 [2022-03-03 19:16:43,600 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 141 [2022-03-03 19:16:44,226 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 19:16:44,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:44,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:44,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-03-03 19:16:44,719 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:44,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:16:44,724 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:44,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:16:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:44,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384755588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:44,800 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:44,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:44,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827176525] [2022-03-03 19:16:44,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:44,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:44,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:44,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:44,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:44,801 INFO L87 Difference]: Start difference. First operand 371 states and 1097 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 19:16:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:45,301 INFO L93 Difference]: Finished difference Result 515 states and 1540 transitions. [2022-03-03 19:16:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:16:45,301 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 19:16:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:45,302 INFO L225 Difference]: With dead ends: 515 [2022-03-03 19:16:45,302 INFO L226 Difference]: Without dead ends: 500 [2022-03-03 19:16:45,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:45,302 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:45,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 208 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 298 Invalid, 0 Unknown, 174 Unchecked, 0.1s Time] [2022-03-03 19:16:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-03-03 19:16:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 383. [2022-03-03 19:16:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 2.986910994764398) internal successors, (1141), 382 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1141 transitions. [2022-03-03 19:16:45,307 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1141 transitions. Word has length 20 [2022-03-03 19:16:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:45,307 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 1141 transitions. [2022-03-03 19:16:45,307 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 19:16:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1141 transitions. [2022-03-03 19:16:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:45,307 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:45,308 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 19:16:45,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:45,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:45,522 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1969881263, now seen corresponding path program 64 times [2022-03-03 19:16:45,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:45,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547492348] [2022-03-03 19:16:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:45,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:45,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:45,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547492348] [2022-03-03 19:16:45,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547492348] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:45,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040106733] [2022-03-03 19:16:45,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:45,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:45,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:45,766 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 19:16:45,767 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 19:16:45,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:45,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:45,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:45,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:46,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:46,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 105 [2022-03-03 19:16:46,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:46,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 191 treesize of output 171 [2022-03-03 19:16:46,629 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 171 treesize of output 151 [2022-03-03 19:16:47,285 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 19:16:47,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:47,529 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:47,529 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-03-03 19:16:47,894 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:47,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 118 [2022-03-03 19:16:47,900 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:47,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 98 [2022-03-03 19:16:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:48,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040106733] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:48,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:48,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:48,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374061899] [2022-03-03 19:16:48,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:48,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:48,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:48,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:48,038 INFO L87 Difference]: Start difference. First operand 383 states and 1141 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 19:16:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:48,770 INFO L93 Difference]: Finished difference Result 657 states and 1933 transitions. [2022-03-03 19:16:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:16:48,770 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 19:16:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:48,771 INFO L225 Difference]: With dead ends: 657 [2022-03-03 19:16:48,771 INFO L226 Difference]: Without dead ends: 643 [2022-03-03 19:16:48,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:16:48,772 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 91 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:48,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 344 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 423 Invalid, 0 Unknown, 314 Unchecked, 0.2s Time] [2022-03-03 19:16:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-03-03 19:16:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 377. [2022-03-03 19:16:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.981382978723404) internal successors, (1121), 376 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1121 transitions. [2022-03-03 19:16:48,776 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1121 transitions. Word has length 20 [2022-03-03 19:16:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:48,777 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1121 transitions. [2022-03-03 19:16:48,777 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 19:16:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1121 transitions. [2022-03-03 19:16:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:48,777 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:48,777 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 19:16:48,795 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 19:16:48,978 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,SelfDestructingSolverStorable215 [2022-03-03 19:16:48,978 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1947284715, now seen corresponding path program 65 times [2022-03-03 19:16:48,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:48,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140343579] [2022-03-03 19:16:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:48,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:49,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:49,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140343579] [2022-03-03 19:16:49,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140343579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:49,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761737244] [2022-03-03 19:16:49,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:49,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:49,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:49,241 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 19:16:49,242 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 19:16:49,272 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:16:49,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:49,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:16:49,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:49,566 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 93 treesize of output 79 [2022-03-03 19:16:49,719 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 162 treesize of output 144 [2022-03-03 19:16:49,720 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 144 treesize of output 126 [2022-03-03 19:16:50,274 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 19:16:50,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:50,521 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:50,521 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 128 treesize of output 120 [2022-03-03 19:16:50,767 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:16:50,768 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 106 treesize of output 91 [2022-03-03 19:16:50,769 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 88 treesize of output 70 [2022-03-03 19:16:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:50,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761737244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:50,795 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:50,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:16:50,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060663696] [2022-03-03 19:16:50,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:50,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:16:50,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:16:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:16:50,796 INFO L87 Difference]: Start difference. First operand 377 states and 1121 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 19:16:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:53,626 INFO L93 Difference]: Finished difference Result 702 states and 1945 transitions. [2022-03-03 19:16:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:16:53,626 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 19:16:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:53,627 INFO L225 Difference]: With dead ends: 702 [2022-03-03 19:16:53,627 INFO L226 Difference]: Without dead ends: 625 [2022-03-03 19:16:53,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:16:53,628 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 211 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:53,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 421 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:16:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-03-03 19:16:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 350. [2022-03-03 19:16:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.9369627507163325) internal successors, (1025), 349 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1025 transitions. [2022-03-03 19:16:53,632 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1025 transitions. Word has length 20 [2022-03-03 19:16:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:53,633 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1025 transitions. [2022-03-03 19:16:53,633 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 19:16:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1025 transitions. [2022-03-03 19:16:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:53,633 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:53,633 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 19:16:53,649 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 19:16:53,848 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,SelfDestructingSolverStorable216 [2022-03-03 19:16:53,849 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1885856431, now seen corresponding path program 66 times [2022-03-03 19:16:53,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:53,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101001014] [2022-03-03 19:16:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:54,002 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 19:16:54,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:54,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101001014] [2022-03-03 19:16:54,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101001014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:54,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386069016] [2022-03-03 19:16:54,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:54,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:54,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:54,003 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 19:16:54,004 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 19:16:54,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:16:54,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:54,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:54,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:54,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:54,828 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-03-03 19:16:55,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:55,305 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 198 treesize of output 176 [2022-03-03 19:16:55,307 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 154 [2022-03-03 19:16:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:56,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:56,315 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:56,315 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 90 treesize of output 84 [2022-03-03 19:16:56,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:56,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:16:56,566 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:56,567 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 86 treesize of output 78 [2022-03-03 19:16:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:56,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386069016] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:56,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:56,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:16:56,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93960747] [2022-03-03 19:16:56,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:56,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:56,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:56,659 INFO L87 Difference]: Start difference. First operand 350 states and 1025 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 19:16:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:57,275 INFO L93 Difference]: Finished difference Result 551 states and 1577 transitions. [2022-03-03 19:16:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:16:57,275 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 19:16:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:57,276 INFO L225 Difference]: With dead ends: 551 [2022-03-03 19:16:57,276 INFO L226 Difference]: Without dead ends: 537 [2022-03-03 19:16:57,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:16:57,276 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:57,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 326 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 327 Invalid, 0 Unknown, 162 Unchecked, 0.1s Time] [2022-03-03 19:16:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-03-03 19:16:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 352. [2022-03-03 19:16:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.9373219373219372) internal successors, (1031), 351 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1031 transitions. [2022-03-03 19:16:57,281 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1031 transitions. Word has length 20 [2022-03-03 19:16:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:57,281 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 1031 transitions. [2022-03-03 19:16:57,281 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 19:16:57,281 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1031 transitions. [2022-03-03 19:16:57,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:16:57,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:57,282 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 19:16:57,299 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 19:16:57,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2022-03-03 19:16:57,495 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:57,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:57,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1863259883, now seen corresponding path program 67 times [2022-03-03 19:16:57,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:57,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080569100] [2022-03-03 19:16:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:57,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:57,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080569100] [2022-03-03 19:16:57,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080569100] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:57,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851577176] [2022-03-03 19:16:57,704 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:57,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:57,705 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 19:16:57,706 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 19:16:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:57,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:16:57,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:58,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:58,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:16:58,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:16:58,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 185 treesize of output 163 [2022-03-03 19:16:58,837 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 163 treesize of output 141 [2022-03-03 19:16:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:59,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:59,817 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:16:59,818 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 90 treesize of output 84 [2022-03-03 19:17:00,106 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:00,106 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:17:00,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:00,113 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 86 treesize of output 78 [2022-03-03 19:17:00,211 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 19:17:00,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851577176] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:00,212 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:00,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:00,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682227754] [2022-03-03 19:17:00,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:00,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:00,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:00,212 INFO L87 Difference]: Start difference. First operand 352 states and 1031 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 19:17:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:01,284 INFO L93 Difference]: Finished difference Result 541 states and 1561 transitions. [2022-03-03 19:17:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:17:01,284 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 19:17:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:01,285 INFO L225 Difference]: With dead ends: 541 [2022-03-03 19:17:01,285 INFO L226 Difference]: Without dead ends: 514 [2022-03-03 19:17:01,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:17:01,285 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 131 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:01,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 416 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 550 Invalid, 0 Unknown, 354 Unchecked, 0.2s Time] [2022-03-03 19:17:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-03-03 19:17:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 350. [2022-03-03 19:17:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.9369627507163325) internal successors, (1025), 349 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1025 transitions. [2022-03-03 19:17:01,289 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1025 transitions. Word has length 20 [2022-03-03 19:17:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:01,289 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1025 transitions. [2022-03-03 19:17:01,289 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 19:17:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1025 transitions. [2022-03-03 19:17:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:01,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:01,290 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 19:17:01,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-03-03 19:17:01,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:01,505 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:01,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:01,506 INFO L85 PathProgramCache]: Analyzing trace with hash 111127373, now seen corresponding path program 68 times [2022-03-03 19:17:01,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:01,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682414322] [2022-03-03 19:17:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:01,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:01,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:01,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682414322] [2022-03-03 19:17:01,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682414322] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:01,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314229781] [2022-03-03 19:17:01,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:17:01,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:01,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:01,743 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 19:17:01,744 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 19:17:01,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:01,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:01,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:02,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:02,320 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 117 treesize of output 101 [2022-03-03 19:17:02,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:02,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 176 treesize of output 156 [2022-03-03 19:17:02,773 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 156 treesize of output 136 [2022-03-03 19:17:03,819 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 19:17:03,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:04,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:04,040 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 90 treesize of output 84 [2022-03-03 19:17:04,266 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:04,267 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 102 treesize of output 94 [2022-03-03 19:17:04,272 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:04,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:17:04,358 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 19:17:04,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314229781] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:04,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:04,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:04,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113731422] [2022-03-03 19:17:04,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:04,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:04,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:04,359 INFO L87 Difference]: Start difference. First operand 350 states and 1025 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 19:17:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:05,519 INFO L93 Difference]: Finished difference Result 706 states and 2048 transitions. [2022-03-03 19:17:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 19:17:05,519 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 19:17:05,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:05,520 INFO L225 Difference]: With dead ends: 706 [2022-03-03 19:17:05,520 INFO L226 Difference]: Without dead ends: 692 [2022-03-03 19:17:05,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=258, Invalid=1722, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:17:05,521 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 160 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:05,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 428 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 531 Invalid, 0 Unknown, 304 Unchecked, 0.2s Time] [2022-03-03 19:17:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-03-03 19:17:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 354. [2022-03-03 19:17:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 2.9376770538243626) internal successors, (1037), 353 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1037 transitions. [2022-03-03 19:17:05,526 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1037 transitions. Word has length 20 [2022-03-03 19:17:05,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:05,526 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 1037 transitions. [2022-03-03 19:17:05,526 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 19:17:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1037 transitions. [2022-03-03 19:17:05,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:05,527 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:05,527 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 19:17:05,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:05,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:05,743 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1830660371, now seen corresponding path program 69 times [2022-03-03 19:17:05,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:05,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37851821] [2022-03-03 19:17:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:05,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:05,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37851821] [2022-03-03 19:17:05,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37851821] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:05,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555546456] [2022-03-03 19:17:05,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:17:05,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:05,913 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 19:17:05,913 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 19:17:05,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:17:05,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:05,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:05,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:06,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:06,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:17:06,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:06,777 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 186 treesize of output 162 [2022-03-03 19:17:06,779 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 162 treesize of output 138 [2022-03-03 19:17:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:07,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:07,895 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:07,895 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 90 treesize of output 84 [2022-03-03 19:17:08,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:08,145 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:17:08,150 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:08,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:17:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:08,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555546456] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:08,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:08,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:08,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824602693] [2022-03-03 19:17:08,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:08,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:08,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:08,237 INFO L87 Difference]: Start difference. First operand 354 states and 1037 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 19:17:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:08,869 INFO L93 Difference]: Finished difference Result 514 states and 1512 transitions. [2022-03-03 19:17:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:17:08,869 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 19:17:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:08,870 INFO L225 Difference]: With dead ends: 514 [2022-03-03 19:17:08,870 INFO L226 Difference]: Without dead ends: 491 [2022-03-03 19:17:08,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:17:08,870 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 68 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:08,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 326 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 395 Invalid, 0 Unknown, 324 Unchecked, 0.1s Time] [2022-03-03 19:17:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-03-03 19:17:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 356. [2022-03-03 19:17:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.9492957746478874) internal successors, (1047), 355 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1047 transitions. [2022-03-03 19:17:08,875 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1047 transitions. Word has length 20 [2022-03-03 19:17:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:08,875 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1047 transitions. [2022-03-03 19:17:08,875 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 19:17:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1047 transitions. [2022-03-03 19:17:08,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:08,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:08,875 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 19:17:08,891 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 19:17:09,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:09,091 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 136902857, now seen corresponding path program 70 times [2022-03-03 19:17:09,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:09,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791429104] [2022-03-03 19:17:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:09,243 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 19:17:09,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:09,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791429104] [2022-03-03 19:17:09,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791429104] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:09,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858811217] [2022-03-03 19:17:09,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:17:09,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:09,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:09,245 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 19:17:09,246 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 19:17:09,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:17:09,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:09,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:17:09,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:09,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:09,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 141 treesize of output 123 [2022-03-03 19:17:10,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:10,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 200 treesize of output 178 [2022-03-03 19:17:10,097 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 156 [2022-03-03 19:17:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:10,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:11,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:11,104 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 90 treesize of output 84 [2022-03-03 19:17:11,346 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:11,346 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 118 treesize of output 108 [2022-03-03 19:17:11,350 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:11,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:17:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:11,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858811217] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:11,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:11,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:11,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347581849] [2022-03-03 19:17:11,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:11,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:11,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:11,441 INFO L87 Difference]: Start difference. First operand 356 states and 1047 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 19:17:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:12,233 INFO L93 Difference]: Finished difference Result 570 states and 1637 transitions. [2022-03-03 19:17:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:17:12,233 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 19:17:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:12,234 INFO L225 Difference]: With dead ends: 570 [2022-03-03 19:17:12,234 INFO L226 Difference]: Without dead ends: 556 [2022-03-03 19:17:12,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:17:12,234 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 130 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:12,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 287 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 477 Invalid, 0 Unknown, 242 Unchecked, 0.2s Time] [2022-03-03 19:17:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-03 19:17:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 356. [2022-03-03 19:17:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.9492957746478874) internal successors, (1047), 355 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1047 transitions. [2022-03-03 19:17:12,239 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1047 transitions. Word has length 20 [2022-03-03 19:17:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:12,239 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1047 transitions. [2022-03-03 19:17:12,239 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 19:17:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1047 transitions. [2022-03-03 19:17:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:12,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:12,240 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 19:17:12,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:12,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:12,455 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash 159499405, now seen corresponding path program 71 times [2022-03-03 19:17:12,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:12,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388891207] [2022-03-03 19:17:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:12,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:12,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388891207] [2022-03-03 19:17:12,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388891207] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:12,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207891235] [2022-03-03 19:17:12,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:17:12,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:12,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:12,596 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 19:17:12,597 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 19:17:12,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:12,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:12,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:12,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:12,881 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 19:17:13,214 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 158 [2022-03-03 19:17:13,217 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 19:17:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:14,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:14,375 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:14,375 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-03-03 19:17:14,681 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:17:14,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 77 [2022-03-03 19:17:14,684 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 74 treesize of output 58 [2022-03-03 19:17:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:14,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207891235] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:14,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:14,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:17:14,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446249422] [2022-03-03 19:17:14,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:14,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:17:14,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:17:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:17:14,751 INFO L87 Difference]: Start difference. First operand 356 states and 1047 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 19:17:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:17,494 INFO L93 Difference]: Finished difference Result 584 states and 1657 transitions. [2022-03-03 19:17:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:17:17,494 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 19:17:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:17,495 INFO L225 Difference]: With dead ends: 584 [2022-03-03 19:17:17,495 INFO L226 Difference]: Without dead ends: 522 [2022-03-03 19:17:17,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:17:17,496 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 184 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:17,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 358 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:17:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-03-03 19:17:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 333. [2022-03-03 19:17:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 2.960843373493976) internal successors, (983), 332 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 983 transitions. [2022-03-03 19:17:17,500 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 983 transitions. Word has length 20 [2022-03-03 19:17:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:17,500 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 983 transitions. [2022-03-03 19:17:17,500 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 19:17:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 983 transitions. [2022-03-03 19:17:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:17,500 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:17,500 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 19:17:17,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-03-03 19:17:17,701 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,SelfDestructingSolverStorable222 [2022-03-03 19:17:17,701 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash 977448749, now seen corresponding path program 72 times [2022-03-03 19:17:17,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:17,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067606575] [2022-03-03 19:17:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:17,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:17,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:17,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067606575] [2022-03-03 19:17:17,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067606575] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:17,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682118008] [2022-03-03 19:17:17,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:17:17,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:17,996 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 19:17:18,014 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 19:17:18,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:17:18,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:18,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:18,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:18,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:18,602 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-03-03 19:17:19,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:19,656 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 183 treesize of output 161 [2022-03-03 19:17:19,657 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 139 [2022-03-03 19:17:20,134 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 19:17:20,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:20,421 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:20,421 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 90 treesize of output 84 [2022-03-03 19:17:20,789 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:20,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:17:20,798 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:20,799 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:17:20,958 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 19:17:20,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682118008] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:20,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:20,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:20,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393891274] [2022-03-03 19:17:20,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:20,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:20,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:20,959 INFO L87 Difference]: Start difference. First operand 333 states and 983 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 19:17:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:21,657 INFO L93 Difference]: Finished difference Result 503 states and 1461 transitions. [2022-03-03 19:17:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:17:21,657 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 19:17:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:21,658 INFO L225 Difference]: With dead ends: 503 [2022-03-03 19:17:21,658 INFO L226 Difference]: Without dead ends: 493 [2022-03-03 19:17:21,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:17:21,658 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 72 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:21,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 535 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 463 Invalid, 0 Unknown, 212 Unchecked, 0.2s Time] [2022-03-03 19:17:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-03 19:17:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 340. [2022-03-03 19:17:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.9528023598820057) internal successors, (1001), 339 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1001 transitions. [2022-03-03 19:17:21,662 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1001 transitions. Word has length 20 [2022-03-03 19:17:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:21,663 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1001 transitions. [2022-03-03 19:17:21,663 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 19:17:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1001 transitions. [2022-03-03 19:17:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:21,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:21,663 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 19:17:21,679 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 19:17:21,879 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,SelfDestructingSolverStorable223 [2022-03-03 19:17:21,879 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 788491629, now seen corresponding path program 73 times [2022-03-03 19:17:21,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:21,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155818856] [2022-03-03 19:17:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:22,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:22,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155818856] [2022-03-03 19:17:22,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155818856] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:22,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235715726] [2022-03-03 19:17:22,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:17:22,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:22,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:22,041 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 19:17:22,041 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 19:17:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:22,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:17:22,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:22,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:22,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:17:23,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:23,621 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 133 [2022-03-03 19:17:23,623 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 133 treesize of output 113 [2022-03-03 19:17:24,021 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 19:17:24,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:24,273 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:24,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:17:24,632 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:24,632 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 118 treesize of output 108 [2022-03-03 19:17:24,637 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:24,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:17:24,728 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 19:17:24,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235715726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:24,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:24,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:24,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897001717] [2022-03-03 19:17:24,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:24,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:24,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:24,729 INFO L87 Difference]: Start difference. First operand 340 states and 1001 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 19:17:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:25,196 INFO L93 Difference]: Finished difference Result 463 states and 1363 transitions. [2022-03-03 19:17:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:17:25,197 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 19:17:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:25,197 INFO L225 Difference]: With dead ends: 463 [2022-03-03 19:17:25,197 INFO L226 Difference]: Without dead ends: 441 [2022-03-03 19:17:25,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:17:25,198 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:25,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 268 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 270 Invalid, 0 Unknown, 57 Unchecked, 0.1s Time] [2022-03-03 19:17:25,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-03-03 19:17:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 352. [2022-03-03 19:17:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.925925925925926) internal successors, (1027), 351 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1027 transitions. [2022-03-03 19:17:25,202 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1027 transitions. Word has length 20 [2022-03-03 19:17:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:25,202 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 1027 transitions. [2022-03-03 19:17:25,202 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 19:17:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1027 transitions. [2022-03-03 19:17:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:25,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:25,203 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 19:17:25,218 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 19:17:25,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-03-03 19:17:25,411 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 159010147, now seen corresponding path program 74 times [2022-03-03 19:17:25,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:25,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017330213] [2022-03-03 19:17:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:25,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:25,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017330213] [2022-03-03 19:17:25,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017330213] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:25,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89481194] [2022-03-03 19:17:25,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:17:25,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:25,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:25,608 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 19:17:25,609 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 19:17:25,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:25,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:25,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:25,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:26,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:26,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:17:27,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:27,671 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 141 [2022-03-03 19:17:27,673 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 123 [2022-03-03 19:17:28,225 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 19:17:28,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:28,512 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:28,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:17:28,923 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:28,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:17:28,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:28,930 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 86 treesize of output 78 [2022-03-03 19:17:29,075 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 19:17:29,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89481194] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:29,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:29,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:29,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246202539] [2022-03-03 19:17:29,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:29,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:29,076 INFO L87 Difference]: Start difference. First operand 352 states and 1027 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 19:17:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:30,292 INFO L93 Difference]: Finished difference Result 636 states and 1839 transitions. [2022-03-03 19:17:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:17:30,292 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 19:17:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:30,293 INFO L225 Difference]: With dead ends: 636 [2022-03-03 19:17:30,293 INFO L226 Difference]: Without dead ends: 628 [2022-03-03 19:17:30,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:17:30,294 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 99 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:30,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 544 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 624 Invalid, 0 Unknown, 308 Unchecked, 0.3s Time] [2022-03-03 19:17:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-03-03 19:17:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 387. [2022-03-03 19:17:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 2.901554404145078) internal successors, (1120), 386 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1120 transitions. [2022-03-03 19:17:30,299 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1120 transitions. Word has length 20 [2022-03-03 19:17:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:30,299 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 1120 transitions. [2022-03-03 19:17:30,299 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 19:17:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1120 transitions. [2022-03-03 19:17:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:30,300 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:30,300 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 19:17:30,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:30,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:30,515 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2108693741, now seen corresponding path program 75 times [2022-03-03 19:17:30,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:30,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596451023] [2022-03-03 19:17:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:30,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:30,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596451023] [2022-03-03 19:17:30,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596451023] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:30,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320478503] [2022-03-03 19:17:30,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:17:30,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:30,675 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 19:17:30,676 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 19:17:30,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:17:30,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:30,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:30,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:31,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:31,246 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 117 treesize of output 101 [2022-03-03 19:17:31,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:31,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 178 treesize of output 158 [2022-03-03 19:17:31,993 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 138 [2022-03-03 19:17:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:33,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:33,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:33,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:17:33,694 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:33,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:17:33,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:33,700 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 86 treesize of output 78 [2022-03-03 19:17:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:33,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320478503] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:33,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:33,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:33,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516295346] [2022-03-03 19:17:33,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:33,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:33,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:33,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:33,824 INFO L87 Difference]: Start difference. First operand 387 states and 1120 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 19:17:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:35,111 INFO L93 Difference]: Finished difference Result 611 states and 1726 transitions. [2022-03-03 19:17:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:17:35,111 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 19:17:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:35,112 INFO L225 Difference]: With dead ends: 611 [2022-03-03 19:17:35,112 INFO L226 Difference]: Without dead ends: 518 [2022-03-03 19:17:35,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:17:35,112 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 140 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:35,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 561 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 809 Invalid, 0 Unknown, 475 Unchecked, 0.4s Time] [2022-03-03 19:17:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-03-03 19:17:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2022-03-03 19:17:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.9328358208955225) internal successors, (1179), 402 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1179 transitions. [2022-03-03 19:17:35,117 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1179 transitions. Word has length 20 [2022-03-03 19:17:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:35,117 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1179 transitions. [2022-03-03 19:17:35,117 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 19:17:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1179 transitions. [2022-03-03 19:17:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:35,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:35,118 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 19:17:35,135 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 19:17:35,318 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,SelfDestructingSolverStorable226 [2022-03-03 19:17:35,319 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1592222201, now seen corresponding path program 76 times [2022-03-03 19:17:35,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:35,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646374813] [2022-03-03 19:17:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:35,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:35,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646374813] [2022-03-03 19:17:35,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646374813] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:35,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001705697] [2022-03-03 19:17:35,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:17:35,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:35,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:35,587 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 19:17:35,590 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 19:17:35,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:17:35,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:35,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:17:35,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:36,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:36,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:17:37,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:37,287 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-03-03 19:17:37,289 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 138 treesize of output 120 [2022-03-03 19:17:37,818 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 19:17:37,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:38,116 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:38,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:17:38,498 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:38,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:17:38,504 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:38,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:17:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:38,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001705697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:38,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:38,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:38,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282735348] [2022-03-03 19:17:38,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:38,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:38,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:38,686 INFO L87 Difference]: Start difference. First operand 403 states and 1179 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 19:17:39,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:39,431 INFO L93 Difference]: Finished difference Result 596 states and 1713 transitions. [2022-03-03 19:17:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:17:39,431 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 19:17:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:39,432 INFO L225 Difference]: With dead ends: 596 [2022-03-03 19:17:39,432 INFO L226 Difference]: Without dead ends: 501 [2022-03-03 19:17:39,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:17:39,433 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 86 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:39,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 362 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 402 Invalid, 0 Unknown, 231 Unchecked, 0.2s Time] [2022-03-03 19:17:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-03-03 19:17:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 421. [2022-03-03 19:17:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 2.9166666666666665) internal successors, (1225), 420 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1225 transitions. [2022-03-03 19:17:39,437 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1225 transitions. Word has length 20 [2022-03-03 19:17:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:39,437 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 1225 transitions. [2022-03-03 19:17:39,437 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 19:17:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1225 transitions. [2022-03-03 19:17:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:39,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:39,438 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 19:17:39,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-03-03 19:17:39,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-03-03 19:17:39,654 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:39,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:39,654 INFO L85 PathProgramCache]: Analyzing trace with hash -619291579, now seen corresponding path program 77 times [2022-03-03 19:17:39,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:39,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367910395] [2022-03-03 19:17:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:39,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:39,819 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 19:17:39,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:39,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367910395] [2022-03-03 19:17:39,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367910395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:39,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547044056] [2022-03-03 19:17:39,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:17:39,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:39,821 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 19:17:39,821 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 19:17:39,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:39,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:17:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:40,037 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 94 treesize of output 80 [2022-03-03 19:17:40,436 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 140 treesize of output 122 [2022-03-03 19:17:40,437 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 19:17:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:40,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:41,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:41,059 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 120 treesize of output 112 [2022-03-03 19:17:41,443 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:17:41,443 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 93 [2022-03-03 19:17:41,446 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 90 treesize of output 72 [2022-03-03 19:17:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:41,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547044056] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:41,481 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:41,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:17:41,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595726640] [2022-03-03 19:17:41,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:17:41,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:17:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:17:41,482 INFO L87 Difference]: Start difference. First operand 421 states and 1225 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 19:17:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:44,255 INFO L93 Difference]: Finished difference Result 809 states and 2242 transitions. [2022-03-03 19:17:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:17:44,255 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 19:17:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:44,256 INFO L225 Difference]: With dead ends: 809 [2022-03-03 19:17:44,256 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 19:17:44,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:17:44,256 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 190 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:44,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 327 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:17:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 19:17:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 388. [2022-03-03 19:17:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.9612403100775193) internal successors, (1146), 387 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1146 transitions. [2022-03-03 19:17:44,262 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1146 transitions. Word has length 20 [2022-03-03 19:17:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:44,262 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1146 transitions. [2022-03-03 19:17:44,262 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 19:17:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1146 transitions. [2022-03-03 19:17:44,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:44,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:44,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:44,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:44,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:44,478 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1243887571, now seen corresponding path program 78 times [2022-03-03 19:17:44,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:44,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829950526] [2022-03-03 19:17:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:44,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:44,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829950526] [2022-03-03 19:17:44,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829950526] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:44,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304027548] [2022-03-03 19:17:44,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:17:44,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:44,692 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 19:17:44,693 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 19:17:44,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:17:44,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:44,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:44,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:45,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:45,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 95 treesize of output 81 [2022-03-03 19:17:46,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:46,100 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 132 [2022-03-03 19:17:46,113 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 114 [2022-03-03 19:17:46,597 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 19:17:46,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:46,907 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:46,908 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 122 treesize of output 112 [2022-03-03 19:17:47,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:47,392 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 102 treesize of output 94 [2022-03-03 19:17:47,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:47,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:17:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:47,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304027548] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:47,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:47,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:47,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910135099] [2022-03-03 19:17:47,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:47,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:47,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:47,529 INFO L87 Difference]: Start difference. First operand 388 states and 1146 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 19:17:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:48,235 INFO L93 Difference]: Finished difference Result 475 states and 1417 transitions. [2022-03-03 19:17:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:17:48,235 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 19:17:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:48,236 INFO L225 Difference]: With dead ends: 475 [2022-03-03 19:17:48,236 INFO L226 Difference]: Without dead ends: 460 [2022-03-03 19:17:48,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:17:48,236 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:48,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 191 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-03-03 19:17:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-03-03 19:17:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 398. [2022-03-03 19:17:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 2.959697732997481) internal successors, (1175), 397 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1175 transitions. [2022-03-03 19:17:48,241 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1175 transitions. Word has length 20 [2022-03-03 19:17:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:48,241 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1175 transitions. [2022-03-03 19:17:48,241 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 19:17:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1175 transitions. [2022-03-03 19:17:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:48,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:48,242 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 19:17:48,258 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 19:17:48,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:48,455 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1056614569, now seen corresponding path program 79 times [2022-03-03 19:17:48,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:48,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885867101] [2022-03-03 19:17:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:48,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:48,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:48,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885867101] [2022-03-03 19:17:48,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885867101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:48,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882747203] [2022-03-03 19:17:48,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:17:48,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:48,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:48,741 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 19:17:48,742 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 19:17:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:48,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:17:48,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:49,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:49,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:17:49,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:49,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 175 treesize of output 151 [2022-03-03 19:17:49,989 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 151 treesize of output 127 [2022-03-03 19:17:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:50,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:51,185 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:51,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 104 [2022-03-03 19:17:51,686 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:51,686 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 113 treesize of output 105 [2022-03-03 19:17:51,693 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:51,693 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-03-03 19:17:51,832 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 19:17:51,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882747203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:51,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:51,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:51,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228255348] [2022-03-03 19:17:51,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:51,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:51,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:51,833 INFO L87 Difference]: Start difference. First operand 398 states and 1175 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 19:17:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:53,197 INFO L93 Difference]: Finished difference Result 662 states and 1856 transitions. [2022-03-03 19:17:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:17:53,198 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 19:17:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:53,199 INFO L225 Difference]: With dead ends: 662 [2022-03-03 19:17:53,199 INFO L226 Difference]: Without dead ends: 595 [2022-03-03 19:17:53,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:17:53,199 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 177 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:53,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 490 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 583 Invalid, 0 Unknown, 329 Unchecked, 0.3s Time] [2022-03-03 19:17:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-03 19:17:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 424. [2022-03-03 19:17:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 2.9858156028368796) internal successors, (1263), 423 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1263 transitions. [2022-03-03 19:17:53,204 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1263 transitions. Word has length 20 [2022-03-03 19:17:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:53,205 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1263 transitions. [2022-03-03 19:17:53,205 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 19:17:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1263 transitions. [2022-03-03 19:17:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:53,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:53,205 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 19:17:53,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:53,415 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,SelfDestructingSolverStorable230 [2022-03-03 19:17:53,415 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1092181967, now seen corresponding path program 80 times [2022-03-03 19:17:53,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:53,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392983830] [2022-03-03 19:17:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:53,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:53,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392983830] [2022-03-03 19:17:53,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392983830] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:53,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86263809] [2022-03-03 19:17:53,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:17:53,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:53,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:53,613 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 19:17:53,614 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 19:17:53,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:53,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:53,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:53,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:54,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:54,143 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-03-03 19:17:54,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:54,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 190 treesize of output 166 [2022-03-03 19:17:54,579 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 166 treesize of output 142 [2022-03-03 19:17:55,350 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 19:17:55,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:55,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:55,554 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:17:55,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:55,828 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 102 treesize of output 94 [2022-03-03 19:17:55,833 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:55,834 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 86 treesize of output 78 [2022-03-03 19:17:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:55,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86263809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:55,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:55,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:55,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738178874] [2022-03-03 19:17:55,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:55,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:55,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:55,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:55,959 INFO L87 Difference]: Start difference. First operand 424 states and 1263 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 19:17:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:57,076 INFO L93 Difference]: Finished difference Result 624 states and 1786 transitions. [2022-03-03 19:17:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:17:57,076 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 19:17:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:57,077 INFO L225 Difference]: With dead ends: 624 [2022-03-03 19:17:57,077 INFO L226 Difference]: Without dead ends: 531 [2022-03-03 19:17:57,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:17:57,077 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:57,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 453 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 783 Invalid, 0 Unknown, 116 Unchecked, 0.3s Time] [2022-03-03 19:17:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-03-03 19:17:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 427. [2022-03-03 19:17:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 2.9906103286384975) internal successors, (1274), 426 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1274 transitions. [2022-03-03 19:17:57,083 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1274 transitions. Word has length 20 [2022-03-03 19:17:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:57,083 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 1274 transitions. [2022-03-03 19:17:57,083 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 19:17:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1274 transitions. [2022-03-03 19:17:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:17:57,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:57,084 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 19:17:57,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:57,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:57,299 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:57,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash -498130613, now seen corresponding path program 81 times [2022-03-03 19:17:57,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:57,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417700953] [2022-03-03 19:17:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:57,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:57,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:57,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417700953] [2022-03-03 19:17:57,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417700953] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:57,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994072771] [2022-03-03 19:17:57,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:17:57,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:57,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:57,455 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 19:17:57,456 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 19:17:57,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:17:57,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:57,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:17:57,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:58,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:58,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 115 treesize of output 99 [2022-03-03 19:17:59,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:17:59,125 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 164 treesize of output 146 [2022-03-03 19:17:59,127 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 128 [2022-03-03 19:17:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:59,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:59,921 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:17:59,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:18:00,292 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:00,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:18:00,298 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:00,298 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:18:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:00,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994072771] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:00,461 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:00,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:00,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953732891] [2022-03-03 19:18:00,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:00,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:00,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:00,462 INFO L87 Difference]: Start difference. First operand 427 states and 1274 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 19:18:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:01,200 INFO L93 Difference]: Finished difference Result 527 states and 1559 transitions. [2022-03-03 19:18:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:18:01,201 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 19:18:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:01,202 INFO L225 Difference]: With dead ends: 527 [2022-03-03 19:18:01,202 INFO L226 Difference]: Without dead ends: 483 [2022-03-03 19:18:01,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:18:01,202 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 80 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 581 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:01,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 383 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 0 Unknown, 581 Unchecked, 0.2s Time] [2022-03-03 19:18:01,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-03-03 19:18:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 439. [2022-03-03 19:18:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 2.970319634703196) internal successors, (1301), 438 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1301 transitions. [2022-03-03 19:18:01,207 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1301 transitions. Word has length 20 [2022-03-03 19:18:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:01,207 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 1301 transitions. [2022-03-03 19:18:01,207 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 19:18:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1301 transitions. [2022-03-03 19:18:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:01,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:01,208 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 19:18:01,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:01,424 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,SelfDestructingSolverStorable232 [2022-03-03 19:18:01,424 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash 474800009, now seen corresponding path program 82 times [2022-03-03 19:18:01,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:01,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299610689] [2022-03-03 19:18:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:01,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:01,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299610689] [2022-03-03 19:18:01,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299610689] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:01,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497344757] [2022-03-03 19:18:01,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:18:01,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:01,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:01,594 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 19:18:01,596 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 19:18:01,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:18:01,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:01,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:18:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:02,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:02,262 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-03-03 19:18:02,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:02,984 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-03-03 19:18:02,986 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 138 treesize of output 120 [2022-03-03 19:18:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:03,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:03,491 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:03,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:18:03,988 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:03,989 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 113 treesize of output 105 [2022-03-03 19:18:03,994 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:03,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:18:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:04,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497344757] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:04,152 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:04,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:04,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636806659] [2022-03-03 19:18:04,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:04,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:04,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:04,153 INFO L87 Difference]: Start difference. First operand 439 states and 1301 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 19:18:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:04,766 INFO L93 Difference]: Finished difference Result 499 states and 1480 transitions. [2022-03-03 19:18:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:04,767 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 19:18:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:04,768 INFO L225 Difference]: With dead ends: 499 [2022-03-03 19:18:04,768 INFO L226 Difference]: Without dead ends: 488 [2022-03-03 19:18:04,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:04,768 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:04,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 296 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 393 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2022-03-03 19:18:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-03-03 19:18:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 439. [2022-03-03 19:18:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 2.9680365296803655) internal successors, (1300), 438 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1300 transitions. [2022-03-03 19:18:04,773 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1300 transitions. Word has length 20 [2022-03-03 19:18:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:04,773 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 1300 transitions. [2022-03-03 19:18:04,773 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 19:18:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1300 transitions. [2022-03-03 19:18:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:04,774 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:04,774 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 19:18:04,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:04,974 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,SelfDestructingSolverStorable233 [2022-03-03 19:18:04,974 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash 471121285, now seen corresponding path program 83 times [2022-03-03 19:18:04,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:04,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008494605] [2022-03-03 19:18:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:05,222 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 19:18:05,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:05,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008494605] [2022-03-03 19:18:05,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008494605] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:05,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556236906] [2022-03-03 19:18:05,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:18:05,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:05,223 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 19:18:05,224 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 19:18:05,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:18:05,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:05,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:05,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:05,536 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 113 treesize of output 97 [2022-03-03 19:18:05,945 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 157 [2022-03-03 19:18:05,947 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 135 [2022-03-03 19:18:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:06,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:06,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:06,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 100 [2022-03-03 19:18:07,248 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:18:07,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 88 [2022-03-03 19:18:07,250 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 85 treesize of output 69 [2022-03-03 19:18:07,274 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 19:18:07,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556236906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:07,274 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:07,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:18:07,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113631488] [2022-03-03 19:18:07,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:07,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:18:07,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:18:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:18:07,275 INFO L87 Difference]: Start difference. First operand 439 states and 1300 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 19:18:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:10,416 INFO L93 Difference]: Finished difference Result 932 states and 2564 transitions. [2022-03-03 19:18:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:18:10,416 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 19:18:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:10,418 INFO L225 Difference]: With dead ends: 932 [2022-03-03 19:18:10,418 INFO L226 Difference]: Without dead ends: 839 [2022-03-03 19:18:10,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=306, Invalid=1586, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:18:10,418 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 290 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:10,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 399 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:18:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-03-03 19:18:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 449. [2022-03-03 19:18:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 2.982142857142857) internal successors, (1336), 448 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1336 transitions. [2022-03-03 19:18:10,425 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1336 transitions. Word has length 20 [2022-03-03 19:18:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:10,425 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 1336 transitions. [2022-03-03 19:18:10,425 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 19:18:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1336 transitions. [2022-03-03 19:18:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:10,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:10,425 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 19:18:10,441 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 19:18:10,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:10,637 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:10,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 90169069, now seen corresponding path program 84 times [2022-03-03 19:18:10,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:10,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939899087] [2022-03-03 19:18:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:10,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:10,872 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 19:18:10,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:10,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939899087] [2022-03-03 19:18:10,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939899087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:10,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726311149] [2022-03-03 19:18:10,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:18:10,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:10,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:10,874 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 19:18:10,874 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 19:18:10,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:18:10,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:10,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:10,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:11,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:11,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 111 treesize of output 95 [2022-03-03 19:18:12,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:12,352 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 176 treesize of output 152 [2022-03-03 19:18:12,354 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 152 treesize of output 128 [2022-03-03 19:18:12,776 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 19:18:12,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:12,989 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:12,989 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 107 treesize of output 99 [2022-03-03 19:18:13,329 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:13,329 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 110 treesize of output 100 [2022-03-03 19:18:13,338 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:13,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 82 [2022-03-03 19:18:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:13,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726311149] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:13,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:13,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:13,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312040231] [2022-03-03 19:18:13,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:13,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:13,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:13,430 INFO L87 Difference]: Start difference. First operand 449 states and 1336 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 19:18:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:13,969 INFO L93 Difference]: Finished difference Result 532 states and 1583 transitions. [2022-03-03 19:18:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:18:13,969 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 19:18:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:13,970 INFO L225 Difference]: With dead ends: 532 [2022-03-03 19:18:13,970 INFO L226 Difference]: Without dead ends: 517 [2022-03-03 19:18:13,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:18:13,971 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:13,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 211 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 0 Unknown, 199 Unchecked, 0.1s Time] [2022-03-03 19:18:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-03-03 19:18:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 444. [2022-03-03 19:18:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 2.981941309255079) internal successors, (1321), 443 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1321 transitions. [2022-03-03 19:18:13,985 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1321 transitions. Word has length 20 [2022-03-03 19:18:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:13,985 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1321 transitions. [2022-03-03 19:18:13,985 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 19:18:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1321 transitions. [2022-03-03 19:18:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:13,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:13,985 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 19:18:14,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-03-03 19:18:14,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-03-03 19:18:14,191 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash 970608129, now seen corresponding path program 85 times [2022-03-03 19:18:14,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:14,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133512324] [2022-03-03 19:18:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:14,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:14,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:14,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133512324] [2022-03-03 19:18:14,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133512324] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:14,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355673855] [2022-03-03 19:18:14,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:18:14,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:14,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:14,377 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 19:18:14,378 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 19:18:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:14,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:18:14,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:14,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:14,912 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-03-03 19:18:15,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:15,545 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 165 treesize of output 143 [2022-03-03 19:18:15,546 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 143 treesize of output 121 [2022-03-03 19:18:15,821 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 19:18:15,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:16,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:16,036 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 122 treesize of output 112 [2022-03-03 19:18:16,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:16,365 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 113 treesize of output 105 [2022-03-03 19:18:16,369 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:16,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:18:16,471 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 19:18:16,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355673855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:16,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:16,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:16,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906336081] [2022-03-03 19:18:16,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:16,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:16,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:16,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:16,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:16,472 INFO L87 Difference]: Start difference. First operand 444 states and 1321 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 19:18:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:17,019 INFO L93 Difference]: Finished difference Result 532 states and 1584 transitions. [2022-03-03 19:18:17,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:18:17,019 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 19:18:17,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:17,020 INFO L225 Difference]: With dead ends: 532 [2022-03-03 19:18:17,020 INFO L226 Difference]: Without dead ends: 525 [2022-03-03 19:18:17,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:17,020 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 50 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:17,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 276 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 405 Invalid, 0 Unknown, 131 Unchecked, 0.1s Time] [2022-03-03 19:18:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-03-03 19:18:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 446. [2022-03-03 19:18:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.979775280898876) internal successors, (1326), 445 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1326 transitions. [2022-03-03 19:18:17,025 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1326 transitions. Word has length 20 [2022-03-03 19:18:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:17,025 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1326 transitions. [2022-03-03 19:18:17,026 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 19:18:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1326 transitions. [2022-03-03 19:18:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:17,026 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:17,026 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 19:18:17,042 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 19:18:17,242 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,SelfDestructingSolverStorable236 [2022-03-03 19:18:17,242 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:17,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1023857027, now seen corresponding path program 86 times [2022-03-03 19:18:17,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:17,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036801577] [2022-03-03 19:18:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:17,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:17,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:17,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036801577] [2022-03-03 19:18:17,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036801577] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:17,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36385942] [2022-03-03 19:18:17,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:18:17,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:17,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:17,436 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 19:18:17,437 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 19:18:17,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:18:17,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:17,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:17,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:18,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:18,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:18:18,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:18,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 145 [2022-03-03 19:18:18,535 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 123 [2022-03-03 19:18:19,188 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 19:18:19,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:19,396 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:19,396 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 103 treesize of output 95 [2022-03-03 19:18:19,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:19,707 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 102 treesize of output 94 [2022-03-03 19:18:19,712 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:19,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:18:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:19,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36385942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:19,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:19,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:19,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817503657] [2022-03-03 19:18:19,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:19,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:19,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:19,790 INFO L87 Difference]: Start difference. First operand 446 states and 1326 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 19:18:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:21,125 INFO L93 Difference]: Finished difference Result 626 states and 1788 transitions. [2022-03-03 19:18:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:18:21,125 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 19:18:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:21,127 INFO L225 Difference]: With dead ends: 626 [2022-03-03 19:18:21,127 INFO L226 Difference]: Without dead ends: 559 [2022-03-03 19:18:21,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:18:21,127 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 90 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:21,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 492 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 827 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-03-03 19:18:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-03-03 19:18:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 448. [2022-03-03 19:18:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 2.9843400447427295) internal successors, (1334), 447 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1334 transitions. [2022-03-03 19:18:21,133 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1334 transitions. Word has length 20 [2022-03-03 19:18:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:21,133 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1334 transitions. [2022-03-03 19:18:21,133 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 19:18:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1334 transitions. [2022-03-03 19:18:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:21,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:21,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:21,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-03-03 19:18:21,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:21,364 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1122313733, now seen corresponding path program 87 times [2022-03-03 19:18:21,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:21,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386560430] [2022-03-03 19:18:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:21,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:21,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:21,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386560430] [2022-03-03 19:18:21,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386560430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:21,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035766559] [2022-03-03 19:18:21,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:18:21,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:21,583 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 19:18:21,584 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 19:18:21,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:18:21,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:21,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:21,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:22,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:22,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:18:22,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:22,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 153 [2022-03-03 19:18:22,515 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 153 treesize of output 133 [2022-03-03 19:18:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:23,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:23,628 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:23,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:18:23,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:23,887 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 102 treesize of output 94 [2022-03-03 19:18:23,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:23,893 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:18:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:23,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035766559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:23,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:23,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:23,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802004203] [2022-03-03 19:18:23,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:23,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:23,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:23,978 INFO L87 Difference]: Start difference. First operand 448 states and 1334 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 19:18:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:25,157 INFO L93 Difference]: Finished difference Result 602 states and 1729 transitions. [2022-03-03 19:18:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:18:25,157 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 19:18:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:25,158 INFO L225 Difference]: With dead ends: 602 [2022-03-03 19:18:25,158 INFO L226 Difference]: Without dead ends: 561 [2022-03-03 19:18:25,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:18:25,158 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 103 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:25,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 374 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 549 Invalid, 0 Unknown, 160 Unchecked, 0.2s Time] [2022-03-03 19:18:25,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-03-03 19:18:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 450. [2022-03-03 19:18:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.9844097995545655) internal successors, (1340), 449 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1340 transitions. [2022-03-03 19:18:25,184 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1340 transitions. Word has length 20 [2022-03-03 19:18:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:25,184 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1340 transitions. [2022-03-03 19:18:25,184 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 19:18:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1340 transitions. [2022-03-03 19:18:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:25,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:25,185 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 19:18:25,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:25,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:25,399 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1605671587, now seen corresponding path program 88 times [2022-03-03 19:18:25,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:25,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335387192] [2022-03-03 19:18:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:25,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:25,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335387192] [2022-03-03 19:18:25,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335387192] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:25,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322595660] [2022-03-03 19:18:25,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:18:25,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:25,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:25,551 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 19:18:25,551 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 19:18:25,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:18:25,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:25,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:18:25,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:26,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:26,049 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 116 treesize of output 100 [2022-03-03 19:18:26,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:26,955 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 133 [2022-03-03 19:18:26,957 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 133 treesize of output 115 [2022-03-03 19:18:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:27,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:27,495 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:27,495 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:18:27,913 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:27,913 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:18:27,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:27,935 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-03-03 19:18:28,080 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 19:18:28,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322595660] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:28,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:28,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:28,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477253725] [2022-03-03 19:18:28,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:28,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:28,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:28,081 INFO L87 Difference]: Start difference. First operand 450 states and 1340 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 19:18:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:28,578 INFO L93 Difference]: Finished difference Result 513 states and 1530 transitions. [2022-03-03 19:18:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:18:28,579 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 19:18:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:28,580 INFO L225 Difference]: With dead ends: 513 [2022-03-03 19:18:28,580 INFO L226 Difference]: Without dead ends: 502 [2022-03-03 19:18:28,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:28,580 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:28,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 308 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 431 Invalid, 0 Unknown, 410 Unchecked, 0.1s Time] [2022-03-03 19:18:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-03-03 19:18:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 453. [2022-03-03 19:18:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 2.982300884955752) internal successors, (1348), 452 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1348 transitions. [2022-03-03 19:18:28,585 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1348 transitions. Word has length 20 [2022-03-03 19:18:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:28,585 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 1348 transitions. [2022-03-03 19:18:28,585 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 19:18:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1348 transitions. [2022-03-03 19:18:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:28,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:28,586 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 19:18:28,601 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 19:18:28,801 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,SelfDestructingSolverStorable239 [2022-03-03 19:18:28,801 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:28,802 INFO L85 PathProgramCache]: Analyzing trace with hash -20613119, now seen corresponding path program 89 times [2022-03-03 19:18:28,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:28,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117091455] [2022-03-03 19:18:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:28,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:28,955 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 19:18:28,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:28,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117091455] [2022-03-03 19:18:28,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117091455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:28,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23428513] [2022-03-03 19:18:28,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:18:28,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:28,957 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 19:18:28,957 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 19:18:28,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:18:28,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:28,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:18:28,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:29,317 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 112 treesize of output 96 [2022-03-03 19:18:29,790 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 138 treesize of output 120 [2022-03-03 19:18:29,792 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 19:18:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:30,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:30,436 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:30,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:18:30,834 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:18:30,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-03-03 19:18:30,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-03-03 19:18:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:30,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23428513] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:30,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:30,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:18:30,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027962350] [2022-03-03 19:18:30,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:30,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:18:30,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:30,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:18:30,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:18:30,862 INFO L87 Difference]: Start difference. First operand 453 states and 1348 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 19:18:32,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:32,010 INFO L93 Difference]: Finished difference Result 628 states and 1818 transitions. [2022-03-03 19:18:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:18:32,010 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 19:18:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:32,011 INFO L225 Difference]: With dead ends: 628 [2022-03-03 19:18:32,011 INFO L226 Difference]: Without dead ends: 599 [2022-03-03 19:18:32,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=173, Invalid=1087, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:32,012 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 109 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:32,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 276 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:18:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-03 19:18:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 443. [2022-03-03 19:18:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 2.993212669683258) internal successors, (1323), 442 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1323 transitions. [2022-03-03 19:18:32,017 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1323 transitions. Word has length 20 [2022-03-03 19:18:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:32,017 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1323 transitions. [2022-03-03 19:18:32,017 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 19:18:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1323 transitions. [2022-03-03 19:18:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:32,017 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:32,018 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 19:18:32,033 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 19:18:32,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:32,233 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash -595490201, now seen corresponding path program 90 times [2022-03-03 19:18:32,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:32,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471503919] [2022-03-03 19:18:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:32,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:32,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:32,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471503919] [2022-03-03 19:18:32,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471503919] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:32,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758093272] [2022-03-03 19:18:32,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:18:32,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:32,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:32,474 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 19:18:32,475 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 19:18:32,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:18:32,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:32,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:32,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:32,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:32,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:18:34,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:34,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 142 [2022-03-03 19:18:34,878 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 142 treesize of output 124 [2022-03-03 19:18:35,256 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 19:18:35,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:35,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:35,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:18:35,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:35,707 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 102 treesize of output 94 [2022-03-03 19:18:35,712 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:35,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:18:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:35,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758093272] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:35,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:35,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:35,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166413438] [2022-03-03 19:18:35,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:35,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:35,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:35,799 INFO L87 Difference]: Start difference. First operand 443 states and 1323 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 19:18:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:36,561 INFO L93 Difference]: Finished difference Result 697 states and 2032 transitions. [2022-03-03 19:18:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:18:36,561 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 19:18:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:36,563 INFO L225 Difference]: With dead ends: 697 [2022-03-03 19:18:36,563 INFO L226 Difference]: Without dead ends: 636 [2022-03-03 19:18:36,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=1332, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:18:36,563 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 108 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:36,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 623 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 747 Invalid, 0 Unknown, 285 Unchecked, 0.2s Time] [2022-03-03 19:18:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-03-03 19:18:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 468. [2022-03-03 19:18:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 2.987152034261242) internal successors, (1395), 467 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1395 transitions. [2022-03-03 19:18:36,569 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1395 transitions. Word has length 20 [2022-03-03 19:18:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:36,569 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1395 transitions. [2022-03-03 19:18:36,569 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 19:18:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1395 transitions. [2022-03-03 19:18:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:36,569 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:36,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:36,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:36,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:36,785 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:36,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:36,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1413928803, now seen corresponding path program 91 times [2022-03-03 19:18:36,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:36,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030161295] [2022-03-03 19:18:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:36,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:36,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:36,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030161295] [2022-03-03 19:18:36,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030161295] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:36,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863338559] [2022-03-03 19:18:36,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:18:36,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:36,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:36,935 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 19:18:36,936 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 19:18:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:36,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:18:36,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:37,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:37,172 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:18:38,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:38,916 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 137 [2022-03-03 19:18:38,918 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 119 [2022-03-03 19:18:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:39,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:39,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:39,593 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 90 treesize of output 84 [2022-03-03 19:18:39,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:39,826 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:18:39,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:39,830 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 97 treesize of output 89 [2022-03-03 19:18:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:39,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863338559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:39,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:39,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:39,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007466016] [2022-03-03 19:18:39,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:39,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:39,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:39,934 INFO L87 Difference]: Start difference. First operand 468 states and 1395 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 19:18:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:40,582 INFO L93 Difference]: Finished difference Result 643 states and 1899 transitions. [2022-03-03 19:18:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:18:40,583 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 19:18:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:40,584 INFO L225 Difference]: With dead ends: 643 [2022-03-03 19:18:40,584 INFO L226 Difference]: Without dead ends: 582 [2022-03-03 19:18:40,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:18:40,584 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 115 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:40,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 488 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 644 Invalid, 0 Unknown, 431 Unchecked, 0.2s Time] [2022-03-03 19:18:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-03-03 19:18:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 478. [2022-03-03 19:18:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 3.0020964360587) internal successors, (1432), 477 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1432 transitions. [2022-03-03 19:18:40,589 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1432 transitions. Word has length 20 [2022-03-03 19:18:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:40,589 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1432 transitions. [2022-03-03 19:18:40,589 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 19:18:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1432 transitions. [2022-03-03 19:18:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:40,590 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:40,590 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 19:18:40,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-03-03 19:18:40,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:40,791 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash 535754791, now seen corresponding path program 92 times [2022-03-03 19:18:40,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:40,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805637940] [2022-03-03 19:18:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:41,009 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 19:18:41,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:41,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805637940] [2022-03-03 19:18:41,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805637940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:41,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96431962] [2022-03-03 19:18:41,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:18:41,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:41,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:41,011 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 19:18:41,011 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 19:18:41,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:18:41,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:41,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:41,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:41,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:41,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:18:43,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:43,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 182 treesize of output 158 [2022-03-03 19:18:43,159 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 158 treesize of output 134 [2022-03-03 19:18:43,958 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 19:18:43,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:44,261 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:44,262 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 90 treesize of output 84 [2022-03-03 19:18:44,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:44,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:18:44,447 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:44,447 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 86 treesize of output 78 [2022-03-03 19:18:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:44,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96431962] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:44,559 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:44,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:44,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49863968] [2022-03-03 19:18:44,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:44,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:44,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:44,560 INFO L87 Difference]: Start difference. First operand 478 states and 1432 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 19:18:45,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:45,808 INFO L93 Difference]: Finished difference Result 788 states and 2259 transitions. [2022-03-03 19:18:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:18:45,808 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 19:18:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:45,809 INFO L225 Difference]: With dead ends: 788 [2022-03-03 19:18:45,809 INFO L226 Difference]: Without dead ends: 653 [2022-03-03 19:18:45,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:18:45,810 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 235 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 443 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:45,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 479 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 782 Invalid, 0 Unknown, 443 Unchecked, 0.3s Time] [2022-03-03 19:18:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-03-03 19:18:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 492. [2022-03-03 19:18:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.026476578411405) internal successors, (1486), 491 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1486 transitions. [2022-03-03 19:18:45,815 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1486 transitions. Word has length 20 [2022-03-03 19:18:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:45,815 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1486 transitions. [2022-03-03 19:18:45,816 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 19:18:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1486 transitions. [2022-03-03 19:18:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:45,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:45,816 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 19:18:45,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-03-03 19:18:46,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:46,032 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1129806145, now seen corresponding path program 93 times [2022-03-03 19:18:46,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:46,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571397885] [2022-03-03 19:18:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:46,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:46,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571397885] [2022-03-03 19:18:46,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571397885] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:46,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050014203] [2022-03-03 19:18:46,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:18:46,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:46,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:46,352 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 19:18:46,353 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 19:18:46,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:18:46,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:46,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:46,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:46,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:46,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:18:48,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:48,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 142 [2022-03-03 19:18:48,234 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 142 treesize of output 124 [2022-03-03 19:18:48,678 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 19:18:48,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:48,959 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:48,959 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 90 treesize of output 84 [2022-03-03 19:18:49,150 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:49,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:18:49,155 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:49,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:18:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:49,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050014203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:49,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:49,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:49,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052955589] [2022-03-03 19:18:49,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:49,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:49,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:49,270 INFO L87 Difference]: Start difference. First operand 492 states and 1486 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 19:18:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:49,805 INFO L93 Difference]: Finished difference Result 594 states and 1798 transitions. [2022-03-03 19:18:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:18:49,805 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 19:18:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:49,806 INFO L225 Difference]: With dead ends: 594 [2022-03-03 19:18:49,806 INFO L226 Difference]: Without dead ends: 550 [2022-03-03 19:18:49,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:18:49,806 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:49,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 272 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 319 Invalid, 0 Unknown, 102 Unchecked, 0.1s Time] [2022-03-03 19:18:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-03-03 19:18:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 497. [2022-03-03 19:18:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 3.0221774193548385) internal successors, (1499), 496 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 19:18:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1499 transitions. [2022-03-03 19:18:49,811 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1499 transitions. Word has length 20 [2022-03-03 19:18:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:49,811 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1499 transitions. [2022-03-03 19:18:49,812 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 19:18:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1499 transitions. [2022-03-03 19:18:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:49,812 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:49,812 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 19:18:49,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:50,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-03-03 19:18:50,014 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2102736767, now seen corresponding path program 94 times [2022-03-03 19:18:50,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:50,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014167302] [2022-03-03 19:18:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:50,223 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 19:18:50,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:50,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014167302] [2022-03-03 19:18:50,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014167302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:50,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784023476] [2022-03-03 19:18:50,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:18:50,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:50,240 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 19:18:50,240 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 19:18:50,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:18:50,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:50,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:18:50,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:50,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:50,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:18:52,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:18:52,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 157 treesize of output 137 [2022-03-03 19:18:52,730 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 117 [2022-03-03 19:18:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:53,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:53,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:53,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:18:53,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:53,588 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 118 treesize of output 108 [2022-03-03 19:18:53,592 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:53,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:18:53,695 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 19:18:53,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784023476] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:53,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:53,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:18:53,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180112274] [2022-03-03 19:18:53,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:53,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:18:53,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:18:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:18:53,696 INFO L87 Difference]: Start difference. First operand 497 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 19:18:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:54,197 INFO L93 Difference]: Finished difference Result 633 states and 1900 transitions. [2022-03-03 19:18:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:18:54,197 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 19:18:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:54,198 INFO L225 Difference]: With dead ends: 633 [2022-03-03 19:18:54,198 INFO L226 Difference]: Without dead ends: 576 [2022-03-03 19:18:54,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:18:54,199 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 94 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:54,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 416 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 554 Invalid, 0 Unknown, 371 Unchecked, 0.2s Time] [2022-03-03 19:18:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-03-03 19:18:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 494. [2022-03-03 19:18:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.026369168356998) internal successors, (1492), 493 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1492 transitions. [2022-03-03 19:18:54,204 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1492 transitions. Word has length 20 [2022-03-03 19:18:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:54,204 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1492 transitions. [2022-03-03 19:18:54,204 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 19:18:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1492 transitions. [2022-03-03 19:18:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:18:54,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:54,205 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 19:18:54,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:54,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2022-03-03 19:18:54,420 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1264634579, now seen corresponding path program 95 times [2022-03-03 19:18:54,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:54,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469805678] [2022-03-03 19:18:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:54,647 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 19:18:54,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:54,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469805678] [2022-03-03 19:18:54,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469805678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:54,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299829774] [2022-03-03 19:18:54,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:18:54,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:54,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:54,649 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 19:18:54,650 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 19:18:54,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:18:54,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:54,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:18:54,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:54,781 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 19:18:55,671 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 159 [2022-03-03 19:18:55,673 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 137 [2022-03-03 19:18:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:56,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:56,496 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:18:56,496 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 131 treesize of output 121 [2022-03-03 19:18:56,882 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:18:56,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 81 [2022-03-03 19:18:56,884 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 78 treesize of output 62 [2022-03-03 19:18:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:56,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299829774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:56,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:56,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:18:56,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764030422] [2022-03-03 19:18:56,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:56,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:18:56,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:18:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:18:56,890 INFO L87 Difference]: Start difference. First operand 494 states and 1492 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 19:19:02,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:02,247 INFO L93 Difference]: Finished difference Result 1197 states and 3276 transitions. [2022-03-03 19:19:02,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:19:02,247 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 19:19:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:02,249 INFO L225 Difference]: With dead ends: 1197 [2022-03-03 19:19:02,249 INFO L226 Difference]: Without dead ends: 1122 [2022-03-03 19:19:02,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:19:02,249 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 314 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:02,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 492 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:19:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-03-03 19:19:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 512. [2022-03-03 19:19:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.980430528375734) internal successors, (1523), 511 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1523 transitions. [2022-03-03 19:19:02,257 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1523 transitions. Word has length 20 [2022-03-03 19:19:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:02,258 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1523 transitions. [2022-03-03 19:19:02,258 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 19:19:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1523 transitions. [2022-03-03 19:19:02,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:02,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:02,258 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 19:19:02,274 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 19:19:02,474 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,SelfDestructingSolverStorable246 [2022-03-03 19:19:02,474 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash -45684499, now seen corresponding path program 96 times [2022-03-03 19:19:02,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:02,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506112140] [2022-03-03 19:19:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:02,782 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 19:19:02,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:02,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506112140] [2022-03-03 19:19:02,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506112140] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:02,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809553052] [2022-03-03 19:19:02,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:19:02,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:02,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:02,783 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 19:19:02,785 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 19:19:02,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:19:02,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:02,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:19:02,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:03,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:03,120 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-03-03 19:19:05,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:05,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 187 treesize of output 165 [2022-03-03 19:19:05,825 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 165 treesize of output 143 [2022-03-03 19:19:06,333 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 19:19:06,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:06,778 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:06,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:19:07,038 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:07,038 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 102 treesize of output 94 [2022-03-03 19:19:07,044 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:07,044 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:19:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:07,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809553052] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:07,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:07,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:07,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936371548] [2022-03-03 19:19:07,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:07,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:07,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:07,124 INFO L87 Difference]: Start difference. First operand 512 states and 1523 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 19:19:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:07,682 INFO L93 Difference]: Finished difference Result 585 states and 1761 transitions. [2022-03-03 19:19:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:07,682 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 19:19:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:07,683 INFO L225 Difference]: With dead ends: 585 [2022-03-03 19:19:07,683 INFO L226 Difference]: Without dead ends: 562 [2022-03-03 19:19:07,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:07,683 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:07,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 210 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 325 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2022-03-03 19:19:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-03-03 19:19:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 514. [2022-03-03 19:19:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.9805068226120857) internal successors, (1529), 513 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1529 transitions. [2022-03-03 19:19:07,688 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1529 transitions. Word has length 20 [2022-03-03 19:19:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:07,688 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1529 transitions. [2022-03-03 19:19:07,689 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 19:19:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1529 transitions. [2022-03-03 19:19:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:07,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:07,689 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 19:19:07,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:07,891 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 19:19:07,891 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash -443781239, now seen corresponding path program 97 times [2022-03-03 19:19:07,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:07,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671421291] [2022-03-03 19:19:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:07,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:08,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:08,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671421291] [2022-03-03 19:19:08,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671421291] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:08,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318616072] [2022-03-03 19:19:08,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:19:08,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:08,137 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 19:19:08,138 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 19:19:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:08,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:19:08,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:08,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:08,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:19:09,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:09,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:19:09,929 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 19:19:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:10,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:11,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:11,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 96 [2022-03-03 19:19:11,570 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:11,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2022-03-03 19:19:11,576 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:11,576 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 109 treesize of output 97 [2022-03-03 19:19:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:11,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318616072] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:11,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:11,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:11,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338136135] [2022-03-03 19:19:11,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:11,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:11,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:11,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:11,695 INFO L87 Difference]: Start difference. First operand 514 states and 1529 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 19:19:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:12,560 INFO L93 Difference]: Finished difference Result 697 states and 2134 transitions. [2022-03-03 19:19:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:19:12,560 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 19:19:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:12,561 INFO L225 Difference]: With dead ends: 697 [2022-03-03 19:19:12,561 INFO L226 Difference]: Without dead ends: 652 [2022-03-03 19:19:12,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:19:12,562 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:12,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 550 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1019 Invalid, 0 Unknown, 377 Unchecked, 0.3s Time] [2022-03-03 19:19:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-03-03 19:19:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 532. [2022-03-03 19:19:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.0150659133709983) internal successors, (1601), 531 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1601 transitions. [2022-03-03 19:19:12,567 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1601 transitions. Word has length 20 [2022-03-03 19:19:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:12,568 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1601 transitions. [2022-03-03 19:19:12,568 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 19:19:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1601 transitions. [2022-03-03 19:19:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:12,568 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:12,568 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 19:19:12,584 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 19:19:12,779 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 19:19:12,779 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash 846600581, now seen corresponding path program 98 times [2022-03-03 19:19:12,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:12,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910894432] [2022-03-03 19:19:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:12,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:12,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:12,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910894432] [2022-03-03 19:19:12,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910894432] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:12,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896600609] [2022-03-03 19:19:12,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:19:12,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:12,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:12,992 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 19:19:12,993 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 19:19:13,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:13,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:13,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:19:13,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:13,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:13,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:19:14,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:14,030 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 153 treesize of output 131 [2022-03-03 19:19:14,033 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 131 treesize of output 109 [2022-03-03 19:19:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:14,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:15,431 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:15,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 159 [2022-03-03 19:19:15,771 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:15,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:19:15,776 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:15,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 102 [2022-03-03 19:19:15,892 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 19:19:15,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896600609] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:15,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:15,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:15,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228533090] [2022-03-03 19:19:15,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:15,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:15,893 INFO L87 Difference]: Start difference. First operand 532 states and 1601 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 19:19:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:16,633 INFO L93 Difference]: Finished difference Result 710 states and 2198 transitions. [2022-03-03 19:19:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:19:16,633 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 19:19:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:16,634 INFO L225 Difference]: With dead ends: 710 [2022-03-03 19:19:16,635 INFO L226 Difference]: Without dead ends: 680 [2022-03-03 19:19:16,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:19:16,635 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 75 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 306 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:16,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 557 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 640 Invalid, 0 Unknown, 306 Unchecked, 0.3s Time] [2022-03-03 19:19:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-03 19:19:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 547. [2022-03-03 19:19:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 3.04029304029304) internal successors, (1660), 546 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1660 transitions. [2022-03-03 19:19:16,641 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1660 transitions. Word has length 20 [2022-03-03 19:19:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:16,641 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1660 transitions. [2022-03-03 19:19:16,641 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 19:19:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1660 transitions. [2022-03-03 19:19:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:16,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:16,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:16,662 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 19:19:16,856 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 19:19:16,857 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1917060185, now seen corresponding path program 99 times [2022-03-03 19:19:16,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:16,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358614348] [2022-03-03 19:19:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:16,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:16,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358614348] [2022-03-03 19:19:17,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358614348] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:17,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469478252] [2022-03-03 19:19:17,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:19:17,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:17,001 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 19:19:17,001 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 19:19:17,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:19:17,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:19:17,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:17,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:17,214 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-03-03 19:19:18,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:18,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 143 treesize of output 125 [2022-03-03 19:19:18,714 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 125 treesize of output 107 [2022-03-03 19:19:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:19,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:19,381 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:19,381 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:19:19,584 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:19,584 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 113 treesize of output 105 [2022-03-03 19:19:19,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:19,589 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 97 treesize of output 89 [2022-03-03 19:19:19,698 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 19:19:19,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469478252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:19,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:19,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:19,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445786210] [2022-03-03 19:19:19,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:19,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:19,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:19,699 INFO L87 Difference]: Start difference. First operand 547 states and 1660 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 19:19:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:20,353 INFO L93 Difference]: Finished difference Result 664 states and 2017 transitions. [2022-03-03 19:19:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:19:20,353 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 19:19:20,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:20,354 INFO L225 Difference]: With dead ends: 664 [2022-03-03 19:19:20,354 INFO L226 Difference]: Without dead ends: 620 [2022-03-03 19:19:20,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:19:20,354 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 66 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:20,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 489 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 792 Invalid, 0 Unknown, 120 Unchecked, 0.3s Time] [2022-03-03 19:19:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-03-03 19:19:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 553. [2022-03-03 19:19:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 3.0217391304347827) internal successors, (1668), 552 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1668 transitions. [2022-03-03 19:19:20,361 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1668 transitions. Word has length 20 [2022-03-03 19:19:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 1668 transitions. [2022-03-03 19:19:20,361 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 19:19:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1668 transitions. [2022-03-03 19:19:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:20,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:20,362 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 19:19:20,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:20,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:20,577 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash 232253577, now seen corresponding path program 100 times [2022-03-03 19:19:20,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:20,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031072913] [2022-03-03 19:19:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:20,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:20,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:20,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031072913] [2022-03-03 19:19:20,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031072913] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:20,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89286641] [2022-03-03 19:19:20,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:19:20,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:20,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:20,756 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 19:19:20,757 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 19:19:20,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:19:20,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:20,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:19:20,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:21,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:21,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:19:23,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:23,065 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 165 treesize of output 145 [2022-03-03 19:19:23,067 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 125 [2022-03-03 19:19:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:23,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:23,655 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:23,655 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 90 treesize of output 84 [2022-03-03 19:19:23,826 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:23,826 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:19:23,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:23,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:19:23,918 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 19:19:23,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89286641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:23,918 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:23,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:23,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330045698] [2022-03-03 19:19:23,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:23,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:23,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:23,919 INFO L87 Difference]: Start difference. First operand 553 states and 1668 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 19:19:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:24,502 INFO L93 Difference]: Finished difference Result 717 states and 2184 transitions. [2022-03-03 19:19:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:19:24,502 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 19:19:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:24,504 INFO L225 Difference]: With dead ends: 717 [2022-03-03 19:19:24,504 INFO L226 Difference]: Without dead ends: 651 [2022-03-03 19:19:24,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:19:24,504 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 63 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:24,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 500 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 559 Invalid, 0 Unknown, 325 Unchecked, 0.2s Time] [2022-03-03 19:19:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-03-03 19:19:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 561. [2022-03-03 19:19:24,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 3.0339285714285715) internal successors, (1699), 560 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1699 transitions. [2022-03-03 19:19:24,510 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1699 transitions. Word has length 20 [2022-03-03 19:19:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:24,510 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 1699 transitions. [2022-03-03 19:19:24,510 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 19:19:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1699 transitions. [2022-03-03 19:19:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:24,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:24,511 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 19:19:24,526 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 19:19:24,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:24,723 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash -40928793, now seen corresponding path program 101 times [2022-03-03 19:19:24,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:24,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102141743] [2022-03-03 19:19:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:24,864 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 19:19:24,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:24,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102141743] [2022-03-03 19:19:24,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102141743] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:24,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762591207] [2022-03-03 19:19:24,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:19:24,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:24,867 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 19:19:24,868 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 19:19:24,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:19:24,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:24,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:19:24,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:24,993 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 109 treesize of output 91 [2022-03-03 19:19:25,212 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 147 treesize of output 127 [2022-03-03 19:19:25,214 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 127 treesize of output 107 [2022-03-03 19:19:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:26,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:27,466 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:27,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 143 [2022-03-03 19:19:27,710 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:19:27,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 100 [2022-03-03 19:19:27,712 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 97 treesize of output 77 [2022-03-03 19:19:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:27,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762591207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:27,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:27,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:19:27,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003003189] [2022-03-03 19:19:27,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:27,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:19:27,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:27,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:19:27,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:19:27,751 INFO L87 Difference]: Start difference. First operand 561 states and 1699 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 19:19:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:29,718 INFO L93 Difference]: Finished difference Result 878 states and 2575 transitions. [2022-03-03 19:19:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:19:29,718 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 19:19:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:29,720 INFO L225 Difference]: With dead ends: 878 [2022-03-03 19:19:29,720 INFO L226 Difference]: Without dead ends: 857 [2022-03-03 19:19:29,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:29,720 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 190 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:29,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 222 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:19:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-03-03 19:19:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 555. [2022-03-03 19:19:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 3.036101083032491) internal successors, (1682), 554 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1682 transitions. [2022-03-03 19:19:29,727 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1682 transitions. Word has length 20 [2022-03-03 19:19:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:29,727 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1682 transitions. [2022-03-03 19:19:29,727 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 19:19:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1682 transitions. [2022-03-03 19:19:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:29,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:29,728 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 19:19:29,744 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 19:19:29,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:29,931 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1229548317, now seen corresponding path program 102 times [2022-03-03 19:19:29,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:29,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796035015] [2022-03-03 19:19:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:29,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:30,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:30,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796035015] [2022-03-03 19:19:30,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796035015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:30,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676704836] [2022-03-03 19:19:30,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:19:30,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:30,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:30,169 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 19:19:30,169 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 19:19:30,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:19:30,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:30,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:19:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:30,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:30,493 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 129 treesize of output 109 [2022-03-03 19:19:31,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:31,161 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 148 [2022-03-03 19:19:31,164 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 148 treesize of output 126 [2022-03-03 19:19:32,134 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 19:19:32,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:32,551 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:32,551 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:19:32,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:32,722 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:19:32,726 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:32,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:19:32,819 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 19:19:32,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676704836] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:32,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:32,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:32,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204133602] [2022-03-03 19:19:32,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:32,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:32,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:32,820 INFO L87 Difference]: Start difference. First operand 555 states and 1682 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 19:19:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:33,786 INFO L93 Difference]: Finished difference Result 785 states and 2320 transitions. [2022-03-03 19:19:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:19:33,786 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 19:19:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:33,787 INFO L225 Difference]: With dead ends: 785 [2022-03-03 19:19:33,787 INFO L226 Difference]: Without dead ends: 692 [2022-03-03 19:19:33,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:19:33,788 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 115 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:33,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 439 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 770 Invalid, 0 Unknown, 116 Unchecked, 0.3s Time] [2022-03-03 19:19:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-03-03 19:19:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 561. [2022-03-03 19:19:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 3.0607142857142855) internal successors, (1714), 560 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1714 transitions. [2022-03-03 19:19:33,794 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1714 transitions. Word has length 20 [2022-03-03 19:19:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:33,794 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 1714 transitions. [2022-03-03 19:19:33,795 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 19:19:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1714 transitions. [2022-03-03 19:19:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:33,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:33,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:33,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:34,027 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,SelfDestructingSolverStorable253 [2022-03-03 19:19:34,028 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash 984947383, now seen corresponding path program 103 times [2022-03-03 19:19:34,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:34,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502813412] [2022-03-03 19:19:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:34,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:34,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502813412] [2022-03-03 19:19:34,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502813412] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:34,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129167759] [2022-03-03 19:19:34,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:19:34,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:34,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:34,274 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 19:19:34,275 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 19:19:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:34,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:19:34,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:34,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:34,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:19:35,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:35,772 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 203 treesize of output 179 [2022-03-03 19:19:35,774 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 155 [2022-03-03 19:19:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:36,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:36,846 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:36,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:19:37,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:37,065 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:19:37,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:37,070 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 100 treesize of output 90 [2022-03-03 19:19:37,168 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 19:19:37,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129167759] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:37,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:37,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:37,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690228335] [2022-03-03 19:19:37,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:37,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:37,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:37,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:37,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:37,169 INFO L87 Difference]: Start difference. First operand 561 states and 1714 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 19:19:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:37,861 INFO L93 Difference]: Finished difference Result 708 states and 2124 transitions. [2022-03-03 19:19:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:19:37,862 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 19:19:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:37,863 INFO L225 Difference]: With dead ends: 708 [2022-03-03 19:19:37,863 INFO L226 Difference]: Without dead ends: 678 [2022-03-03 19:19:37,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:19:37,863 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 102 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:37,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 225 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 432 Invalid, 0 Unknown, 400 Unchecked, 0.2s Time] [2022-03-03 19:19:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-03-03 19:19:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 562. [2022-03-03 19:19:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.064171122994652) internal successors, (1719), 561 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1719 transitions. [2022-03-03 19:19:37,870 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1719 transitions. Word has length 20 [2022-03-03 19:19:37,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:37,870 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1719 transitions. [2022-03-03 19:19:37,870 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 19:19:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1719 transitions. [2022-03-03 19:19:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:37,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:37,875 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 19:19:37,893 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 19:19:38,084 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,SelfDestructingSolverStorable254 [2022-03-03 19:19:38,084 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash 24806715, now seen corresponding path program 104 times [2022-03-03 19:19:38,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:38,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698875701] [2022-03-03 19:19:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:38,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:38,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698875701] [2022-03-03 19:19:38,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698875701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:38,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099193103] [2022-03-03 19:19:38,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:19:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:38,411 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 19:19:38,411 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 19:19:38,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:38,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:38,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:19:38,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:38,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:38,626 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:19:39,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:39,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 191 treesize of output 165 [2022-03-03 19:19:39,454 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 165 treesize of output 139 [2022-03-03 19:19:40,072 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 19:19:40,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:40,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:40,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:19:40,741 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:40,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 98 [2022-03-03 19:19:40,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:40,745 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 90 treesize of output 82 [2022-03-03 19:19:40,825 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 19:19:40,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099193103] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:40,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:40,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:40,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772167481] [2022-03-03 19:19:40,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:40,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:40,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:40,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:40,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:40,841 INFO L87 Difference]: Start difference. First operand 562 states and 1719 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 19:19:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:42,009 INFO L93 Difference]: Finished difference Result 792 states and 2383 transitions. [2022-03-03 19:19:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:19:42,014 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 19:19:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:42,017 INFO L225 Difference]: With dead ends: 792 [2022-03-03 19:19:42,018 INFO L226 Difference]: Without dead ends: 726 [2022-03-03 19:19:42,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:19:42,019 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 107 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:42,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 440 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 611 Invalid, 0 Unknown, 300 Unchecked, 0.2s Time] [2022-03-03 19:19:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-03-03 19:19:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 567. [2022-03-03 19:19:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.0759717314487633) internal successors, (1741), 566 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1741 transitions. [2022-03-03 19:19:42,033 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1741 transitions. Word has length 20 [2022-03-03 19:19:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:42,033 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1741 transitions. [2022-03-03 19:19:42,033 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 19:19:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1741 transitions. [2022-03-03 19:19:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:42,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:42,034 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 19:19:42,051 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 19:19:42,236 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,SelfDestructingSolverStorable255 [2022-03-03 19:19:42,236 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:42,236 INFO L85 PathProgramCache]: Analyzing trace with hash 452379701, now seen corresponding path program 105 times [2022-03-03 19:19:42,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:42,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588591489] [2022-03-03 19:19:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:42,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:42,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588591489] [2022-03-03 19:19:42,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588591489] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:42,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17726457] [2022-03-03 19:19:42,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:19:42,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:42,585 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 19:19:42,606 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 19:19:42,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:19:42,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:42,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:19:42,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:42,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:42,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:19:44,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:44,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 153 [2022-03-03 19:19:44,320 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 153 treesize of output 133 [2022-03-03 19:19:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:45,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:45,507 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:45,507 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 90 treesize of output 84 [2022-03-03 19:19:45,672 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:45,673 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 102 treesize of output 94 [2022-03-03 19:19:45,677 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:45,678 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:19:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:45,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17726457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:45,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:45,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:45,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969615401] [2022-03-03 19:19:45,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:45,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:45,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:45,756 INFO L87 Difference]: Start difference. First operand 567 states and 1741 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 19:19:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:46,640 INFO L93 Difference]: Finished difference Result 652 states and 2003 transitions. [2022-03-03 19:19:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:19:46,641 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 19:19:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:46,642 INFO L225 Difference]: With dead ends: 652 [2022-03-03 19:19:46,642 INFO L226 Difference]: Without dead ends: 632 [2022-03-03 19:19:46,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:19:46,642 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:46,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 225 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 420 Invalid, 0 Unknown, 139 Unchecked, 0.2s Time] [2022-03-03 19:19:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-03-03 19:19:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 570. [2022-03-03 19:19:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.07908611599297) internal successors, (1752), 569 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1752 transitions. [2022-03-03 19:19:46,648 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1752 transitions. Word has length 20 [2022-03-03 19:19:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:46,648 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1752 transitions. [2022-03-03 19:19:46,649 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 19:19:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1752 transitions. [2022-03-03 19:19:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:46,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:46,649 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 19:19:46,665 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 19:19:46,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2022-03-03 19:19:46,859 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1023834507, now seen corresponding path program 106 times [2022-03-03 19:19:46,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:46,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516460221] [2022-03-03 19:19:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:47,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:47,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516460221] [2022-03-03 19:19:47,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516460221] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:47,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955030651] [2022-03-03 19:19:47,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:19:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:47,094 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 19:19:47,094 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 19:19:47,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:19:47,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:47,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:19:47,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:47,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:47,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:19:49,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:49,282 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 137 [2022-03-03 19:19:49,284 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 117 [2022-03-03 19:19:49,597 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 19:19:49,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:49,938 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:49,938 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 90 treesize of output 84 [2022-03-03 19:19:50,171 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:50,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:19:50,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:50,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:19:50,265 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 19:19:50,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955030651] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:50,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:50,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:19:50,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241690749] [2022-03-03 19:19:50,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:50,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:19:50,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:19:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:19:50,266 INFO L87 Difference]: Start difference. First operand 570 states and 1752 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 19:19:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:50,850 INFO L93 Difference]: Finished difference Result 663 states and 2022 transitions. [2022-03-03 19:19:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:19:50,851 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 19:19:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:50,852 INFO L225 Difference]: With dead ends: 663 [2022-03-03 19:19:50,852 INFO L226 Difference]: Without dead ends: 612 [2022-03-03 19:19:50,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:19:50,852 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:50,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 250 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 332 Invalid, 0 Unknown, 218 Unchecked, 0.1s Time] [2022-03-03 19:19:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-03-03 19:19:50,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 567. [2022-03-03 19:19:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.0759717314487633) internal successors, (1741), 566 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1741 transitions. [2022-03-03 19:19:50,858 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1741 transitions. Word has length 20 [2022-03-03 19:19:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:50,858 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1741 transitions. [2022-03-03 19:19:50,858 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 19:19:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1741 transitions. [2022-03-03 19:19:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:50,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:50,859 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 19:19:50,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:51,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2022-03-03 19:19:51,059 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:51,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1114812981, now seen corresponding path program 107 times [2022-03-03 19:19:51,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:51,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697449019] [2022-03-03 19:19:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:51,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:51,306 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 19:19:51,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:51,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697449019] [2022-03-03 19:19:51,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697449019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:51,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140532092] [2022-03-03 19:19:51,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:19:51,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:51,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:51,320 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 19:19:51,335 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 19:19:51,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:19:51,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:51,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:19:51,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:51,457 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 19:19:51,867 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 156 [2022-03-03 19:19:51,869 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 134 [2022-03-03 19:19:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:52,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:52,961 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:19:52,962 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:19:53,193 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:19:53,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 95 [2022-03-03 19:19:53,206 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 92 treesize of output 74 [2022-03-03 19:19:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:53,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140532092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:53,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:53,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:19:53,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854970699] [2022-03-03 19:19:53,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:53,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:19:53,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:19:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:19:53,240 INFO L87 Difference]: Start difference. First operand 567 states and 1741 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 19:19:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:59,111 INFO L93 Difference]: Finished difference Result 1269 states and 3599 transitions. [2022-03-03 19:19:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 19:19:59,112 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 19:19:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:59,113 INFO L225 Difference]: With dead ends: 1269 [2022-03-03 19:19:59,114 INFO L226 Difference]: Without dead ends: 1195 [2022-03-03 19:19:59,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=432, Invalid=2430, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 19:19:59,114 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 310 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:59,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 658 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 19:19:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-03 19:19:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 558. [2022-03-03 19:19:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.0718132854578095) internal successors, (1711), 557 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1711 transitions. [2022-03-03 19:19:59,124 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1711 transitions. Word has length 20 [2022-03-03 19:19:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:59,125 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1711 transitions. [2022-03-03 19:19:59,125 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 19:19:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1711 transitions. [2022-03-03 19:19:59,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:19:59,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:59,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:59,142 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 19:19:59,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2022-03-03 19:19:59,341 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -60677663, now seen corresponding path program 108 times [2022-03-03 19:19:59,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:59,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283151558] [2022-03-03 19:19:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:59,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:59,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283151558] [2022-03-03 19:19:59,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283151558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:59,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831911856] [2022-03-03 19:19:59,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:19:59,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:59,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:59,619 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 19:19:59,619 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 19:19:59,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:19:59,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:59,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:19:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:59,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:19:59,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:20:01,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:01,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 182 treesize of output 160 [2022-03-03 19:20:01,722 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 138 [2022-03-03 19:20:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:02,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:02,752 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:02,752 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 104 treesize of output 96 [2022-03-03 19:20:03,091 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:03,091 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-03-03 19:20:03,096 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:03,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:20:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:03,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831911856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:03,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:03,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:03,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266923997] [2022-03-03 19:20:03,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:03,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:03,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:03,192 INFO L87 Difference]: Start difference. First operand 558 states and 1711 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 19:20:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:04,083 INFO L93 Difference]: Finished difference Result 711 states and 2149 transitions. [2022-03-03 19:20:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:20:04,083 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 19:20:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:04,084 INFO L225 Difference]: With dead ends: 711 [2022-03-03 19:20:04,084 INFO L226 Difference]: Without dead ends: 666 [2022-03-03 19:20:04,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=1465, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:20:04,085 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 120 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:04,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 335 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 589 Invalid, 0 Unknown, 333 Unchecked, 0.2s Time] [2022-03-03 19:20:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-03-03 19:20:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 562. [2022-03-03 19:20:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.0802139037433154) internal successors, (1728), 561 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1728 transitions. [2022-03-03 19:20:04,091 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1728 transitions. Word has length 20 [2022-03-03 19:20:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:04,091 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1728 transitions. [2022-03-03 19:20:04,091 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 19:20:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1728 transitions. [2022-03-03 19:20:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:04,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:04,092 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 19:20:04,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:04,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2022-03-03 19:20:04,307 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1941209491, now seen corresponding path program 109 times [2022-03-03 19:20:04,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:04,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174341350] [2022-03-03 19:20:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:04,521 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 19:20:04,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:04,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174341350] [2022-03-03 19:20:04,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174341350] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:04,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511015371] [2022-03-03 19:20:04,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:20:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:04,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:04,522 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 19:20:04,523 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 19:20:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:04,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:04,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:05,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:05,052 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-03-03 19:20:06,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:06,387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 139 [2022-03-03 19:20:06,389 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 139 treesize of output 121 [2022-03-03 19:20:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:06,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:07,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:07,179 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 114 treesize of output 104 [2022-03-03 19:20:07,663 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:07,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 110 [2022-03-03 19:20:07,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:07,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 92 [2022-03-03 19:20:07,781 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 19:20:07,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511015371] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:07,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:07,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:07,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590654034] [2022-03-03 19:20:07,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:07,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:07,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:07,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:07,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:07,782 INFO L87 Difference]: Start difference. First operand 562 states and 1728 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 19:20:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:08,427 INFO L93 Difference]: Finished difference Result 646 states and 1997 transitions. [2022-03-03 19:20:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:20:08,428 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 19:20:08,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:08,429 INFO L225 Difference]: With dead ends: 646 [2022-03-03 19:20:08,429 INFO L226 Difference]: Without dead ends: 631 [2022-03-03 19:20:08,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:20:08,429 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:08,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 257 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 298 Unchecked, 0.2s Time] [2022-03-03 19:20:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-03-03 19:20:08,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 566. [2022-03-03 19:20:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.0867256637168143) internal successors, (1744), 565 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1744 transitions. [2022-03-03 19:20:08,435 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1744 transitions. Word has length 20 [2022-03-03 19:20:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:08,435 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1744 transitions. [2022-03-03 19:20:08,435 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 19:20:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1744 transitions. [2022-03-03 19:20:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:08,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:08,436 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 19:20:08,452 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 19:20:08,651 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,SelfDestructingSolverStorable260 [2022-03-03 19:20:08,651 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1621293401, now seen corresponding path program 110 times [2022-03-03 19:20:08,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:08,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667726815] [2022-03-03 19:20:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:08,866 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 19:20:08,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:08,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667726815] [2022-03-03 19:20:08,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667726815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:08,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190723266] [2022-03-03 19:20:08,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:20:08,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:08,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:08,867 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 19:20:08,868 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 19:20:08,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:08,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:08,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:08,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:09,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:09,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:20:10,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:10,526 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 141 treesize of output 121 [2022-03-03 19:20:10,536 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 101 [2022-03-03 19:20:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:11,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:11,927 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:11,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:20:12,719 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:12,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 136 [2022-03-03 19:20:12,727 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:12,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 112 [2022-03-03 19:20:12,925 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 19:20:12,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190723266] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:12,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:12,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:12,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69015680] [2022-03-03 19:20:12,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:12,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:12,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:12,926 INFO L87 Difference]: Start difference. First operand 566 states and 1744 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 19:20:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:14,178 INFO L93 Difference]: Finished difference Result 752 states and 2298 transitions. [2022-03-03 19:20:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:20:14,178 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 19:20:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:14,179 INFO L225 Difference]: With dead ends: 752 [2022-03-03 19:20:14,179 INFO L226 Difference]: Without dead ends: 722 [2022-03-03 19:20:14,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:20:14,180 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 99 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:14,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 390 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 693 Invalid, 0 Unknown, 336 Unchecked, 0.3s Time] [2022-03-03 19:20:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-03-03 19:20:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 570. [2022-03-03 19:20:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.093145869947276) internal successors, (1760), 569 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1760 transitions. [2022-03-03 19:20:14,186 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1760 transitions. Word has length 20 [2022-03-03 19:20:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:14,186 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1760 transitions. [2022-03-03 19:20:14,186 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 19:20:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1760 transitions. [2022-03-03 19:20:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:14,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:14,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:14,205 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 19:20:14,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:14,403 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash 363657419, now seen corresponding path program 111 times [2022-03-03 19:20:14,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:14,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501738080] [2022-03-03 19:20:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:14,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:14,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501738080] [2022-03-03 19:20:14,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501738080] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:14,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80159437] [2022-03-03 19:20:14,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:20:14,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:14,676 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 19:20:14,677 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 19:20:14,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:20:14,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:14,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:20:14,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:14,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:14,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:20:16,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:16,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 171 [2022-03-03 19:20:16,363 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 171 treesize of output 147 [2022-03-03 19:20:17,035 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 19:20:17,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:17,426 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:17,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:20:17,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:17,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:20:17,701 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:17,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 89 [2022-03-03 19:20:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:17,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80159437] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:17,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:17,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:17,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634766598] [2022-03-03 19:20:17,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:17,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:17,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:17,804 INFO L87 Difference]: Start difference. First operand 570 states and 1760 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 19:20:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:18,530 INFO L93 Difference]: Finished difference Result 665 states and 2070 transitions. [2022-03-03 19:20:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:20:18,531 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 19:20:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:18,532 INFO L225 Difference]: With dead ends: 665 [2022-03-03 19:20:18,532 INFO L226 Difference]: Without dead ends: 650 [2022-03-03 19:20:18,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:20:18,532 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:18,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 326 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 654 Invalid, 0 Unknown, 96 Unchecked, 0.2s Time] [2022-03-03 19:20:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-03-03 19:20:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 578. [2022-03-03 19:20:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.1091854419410745) internal successors, (1794), 577 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1794 transitions. [2022-03-03 19:20:18,538 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1794 transitions. Word has length 20 [2022-03-03 19:20:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:18,538 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1794 transitions. [2022-03-03 19:20:18,538 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 19:20:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1794 transitions. [2022-03-03 19:20:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:18,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:18,539 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 19:20:18,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:18,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:18,747 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -133709071, now seen corresponding path program 112 times [2022-03-03 19:20:18,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:18,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876696120] [2022-03-03 19:20:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:18,984 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 19:20:18,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:18,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876696120] [2022-03-03 19:20:18,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876696120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:18,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033553998] [2022-03-03 19:20:18,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:20:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:18,986 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 19:20:18,986 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 19:20:19,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:20:19,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:19,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:20:19,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:19,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:19,418 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 129 treesize of output 109 [2022-03-03 19:20:21,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:21,322 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 137 [2022-03-03 19:20:21,325 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 19:20:21,734 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 19:20:21,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:22,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:22,151 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 90 treesize of output 84 [2022-03-03 19:20:22,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:22,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:20:22,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:22,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:20:22,712 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 19:20:22,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033553998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:22,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:22,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:22,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808381140] [2022-03-03 19:20:22,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:22,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:22,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:22,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:22,713 INFO L87 Difference]: Start difference. First operand 578 states and 1794 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 19:20:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:23,257 INFO L93 Difference]: Finished difference Result 679 states and 2090 transitions. [2022-03-03 19:20:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:20:23,257 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 19:20:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:23,258 INFO L225 Difference]: With dead ends: 679 [2022-03-03 19:20:23,258 INFO L226 Difference]: Without dead ends: 631 [2022-03-03 19:20:23,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:20:23,259 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:23,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 327 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 558 Invalid, 0 Unknown, 119 Unchecked, 0.2s Time] [2022-03-03 19:20:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-03-03 19:20:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 581. [2022-03-03 19:20:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 3.106896551724138) internal successors, (1802), 580 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1802 transitions. [2022-03-03 19:20:23,275 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1802 transitions. Word has length 20 [2022-03-03 19:20:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:23,275 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 1802 transitions. [2022-03-03 19:20:23,275 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 19:20:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1802 transitions. [2022-03-03 19:20:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:23,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:23,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:23,292 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 19:20:23,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:23,491 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:23,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1766710445, now seen corresponding path program 113 times [2022-03-03 19:20:23,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:23,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833864511] [2022-03-03 19:20:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:23,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:23,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:23,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833864511] [2022-03-03 19:20:23,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833864511] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:23,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254578538] [2022-03-03 19:20:23,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:20:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:23,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:23,644 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 19:20:23,644 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 19:20:23,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:23,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:23,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:20:23,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:23,804 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 109 treesize of output 91 [2022-03-03 19:20:24,351 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 170 treesize of output 150 [2022-03-03 19:20:24,352 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 130 [2022-03-03 19:20:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:24,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:25,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:25,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 127 [2022-03-03 19:20:26,011 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:20:26,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-03-03 19:20:26,013 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 88 treesize of output 70 [2022-03-03 19:20:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:26,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254578538] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:26,054 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:26,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:20:26,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670982283] [2022-03-03 19:20:26,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:26,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:20:26,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:20:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:20:26,054 INFO L87 Difference]: Start difference. First operand 581 states and 1802 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 19:20:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:27,368 INFO L93 Difference]: Finished difference Result 820 states and 2446 transitions. [2022-03-03 19:20:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:20:27,368 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 19:20:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:27,369 INFO L225 Difference]: With dead ends: 820 [2022-03-03 19:20:27,369 INFO L226 Difference]: Without dead ends: 805 [2022-03-03 19:20:27,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:20:27,370 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 116 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:27,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 299 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:20:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-03-03 19:20:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 583. [2022-03-03 19:20:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 3.1082474226804124) internal successors, (1809), 582 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1809 transitions. [2022-03-03 19:20:27,377 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1809 transitions. Word has length 20 [2022-03-03 19:20:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:27,377 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 1809 transitions. [2022-03-03 19:20:27,377 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 19:20:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1809 transitions. [2022-03-03 19:20:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:27,378 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:27,378 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 19:20:27,394 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 19:20:27,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:27,591 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1789306993, now seen corresponding path program 114 times [2022-03-03 19:20:27,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:27,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863664164] [2022-03-03 19:20:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:27,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:27,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:27,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863664164] [2022-03-03 19:20:27,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863664164] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:27,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297425494] [2022-03-03 19:20:27,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:20:27,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:27,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:27,814 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 19:20:27,815 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 19:20:27,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:20:27,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:27,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:27,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:28,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:28,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:20:29,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:29,483 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2022-03-03 19:20:29,485 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 126 [2022-03-03 19:20:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:30,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:30,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:30,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-03-03 19:20:31,202 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:31,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 118 [2022-03-03 19:20:31,207 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:31,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 100 [2022-03-03 19:20:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:31,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297425494] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:31,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:31,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:31,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548506785] [2022-03-03 19:20:31,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:31,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:31,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:31,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:31,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:31,382 INFO L87 Difference]: Start difference. First operand 583 states and 1809 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 19:20:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:32,834 INFO L93 Difference]: Finished difference Result 756 states and 2255 transitions. [2022-03-03 19:20:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:20:32,834 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 19:20:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:32,836 INFO L225 Difference]: With dead ends: 756 [2022-03-03 19:20:32,836 INFO L226 Difference]: Without dead ends: 697 [2022-03-03 19:20:32,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:20:32,836 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 121 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:32,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 464 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 743 Invalid, 0 Unknown, 117 Unchecked, 0.3s Time] [2022-03-03 19:20:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-03-03 19:20:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 583. [2022-03-03 19:20:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 3.1082474226804124) internal successors, (1809), 582 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1809 transitions. [2022-03-03 19:20:32,843 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1809 transitions. Word has length 20 [2022-03-03 19:20:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:32,843 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 1809 transitions. [2022-03-03 19:20:32,843 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 19:20:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1809 transitions. [2022-03-03 19:20:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:32,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:32,844 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 19:20:32,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:33,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2022-03-03 19:20:33,055 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:33,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2139784363, now seen corresponding path program 115 times [2022-03-03 19:20:33,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:33,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123853179] [2022-03-03 19:20:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:33,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:33,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123853179] [2022-03-03 19:20:33,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123853179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:33,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41824458] [2022-03-03 19:20:33,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:20:33,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:33,383 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 19:20:33,384 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 19:20:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:33,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:20:33,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:33,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:33,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:20:34,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:34,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 176 treesize of output 154 [2022-03-03 19:20:34,048 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 132 [2022-03-03 19:20:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:35,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:35,788 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:35,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 126 [2022-03-03 19:20:36,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:36,183 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 130 treesize of output 118 [2022-03-03 19:20:36,188 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:36,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 98 [2022-03-03 19:20:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:36,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41824458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:36,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:36,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:36,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146329791] [2022-03-03 19:20:36,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:36,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:36,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:36,319 INFO L87 Difference]: Start difference. First operand 583 states and 1809 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 19:20:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:37,275 INFO L93 Difference]: Finished difference Result 819 states and 2539 transitions. [2022-03-03 19:20:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:20:37,275 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 19:20:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:37,276 INFO L225 Difference]: With dead ends: 819 [2022-03-03 19:20:37,276 INFO L226 Difference]: Without dead ends: 789 [2022-03-03 19:20:37,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:20:37,277 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 101 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:37,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 306 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 593 Invalid, 0 Unknown, 230 Unchecked, 0.3s Time] [2022-03-03 19:20:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-03-03 19:20:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 584. [2022-03-03 19:20:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.1132075471698113) internal successors, (1815), 583 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1815 transitions. [2022-03-03 19:20:37,284 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1815 transitions. Word has length 20 [2022-03-03 19:20:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:37,284 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1815 transitions. [2022-03-03 19:20:37,284 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 19:20:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1815 transitions. [2022-03-03 19:20:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:37,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:37,285 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 19:20:37,302 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 19:20:37,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:37,485 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash -170232113, now seen corresponding path program 116 times [2022-03-03 19:20:37,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:37,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101176642] [2022-03-03 19:20:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:37,712 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 19:20:37,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:37,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101176642] [2022-03-03 19:20:37,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101176642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:37,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785984712] [2022-03-03 19:20:37,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:20:37,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:37,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:37,714 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 19:20:37,739 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 19:20:37,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:37,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:37,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:20:37,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:38,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:38,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:20:38,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:38,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 178 treesize of output 154 [2022-03-03 19:20:38,670 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 19:20:39,643 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 19:20:39,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:40,144 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:40,144 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 90 treesize of output 84 [2022-03-03 19:20:40,410 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:40,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:20:40,414 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:40,415 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 100 treesize of output 90 [2022-03-03 19:20:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:40,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785984712] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:40,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:40,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:40,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47357092] [2022-03-03 19:20:40,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:40,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:40,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:40,515 INFO L87 Difference]: Start difference. First operand 584 states and 1815 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 19:20:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:41,432 INFO L93 Difference]: Finished difference Result 690 states and 2138 transitions. [2022-03-03 19:20:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:20:41,432 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 19:20:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:41,433 INFO L225 Difference]: With dead ends: 690 [2022-03-03 19:20:41,433 INFO L226 Difference]: Without dead ends: 660 [2022-03-03 19:20:41,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:20:41,434 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:41,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 348 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 645 Invalid, 0 Unknown, 321 Unchecked, 0.2s Time] [2022-03-03 19:20:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-03-03 19:20:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 588. [2022-03-03 19:20:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.1277683134582626) internal successors, (1836), 587 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1836 transitions. [2022-03-03 19:20:41,440 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1836 transitions. Word has length 20 [2022-03-03 19:20:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:41,440 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1836 transitions. [2022-03-03 19:20:41,440 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 19:20:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1836 transitions. [2022-03-03 19:20:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:41,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:41,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:41,458 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 19:20:41,653 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,SelfDestructingSolverStorable267 [2022-03-03 19:20:41,654 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 951164839, now seen corresponding path program 117 times [2022-03-03 19:20:41,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:41,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005949972] [2022-03-03 19:20:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:41,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:41,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005949972] [2022-03-03 19:20:41,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005949972] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:41,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663355387] [2022-03-03 19:20:41,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:20:41,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:41,927 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 19:20:41,951 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 19:20:41,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:20:41,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:41,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:41,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:42,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:42,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:20:42,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:42,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:20:42,712 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 127 treesize of output 107 [2022-03-03 19:20:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:43,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:43,918 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:43,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-03-03 19:20:44,724 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:44,724 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 130 treesize of output 122 [2022-03-03 19:20:44,729 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:44,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 106 [2022-03-03 19:20:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:44,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663355387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:44,904 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:44,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:44,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993180188] [2022-03-03 19:20:44,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:44,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:44,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:44,906 INFO L87 Difference]: Start difference. First operand 588 states and 1836 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 19:20:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:45,718 INFO L93 Difference]: Finished difference Result 698 states and 2170 transitions. [2022-03-03 19:20:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:20:45,718 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 19:20:45,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:45,719 INFO L225 Difference]: With dead ends: 698 [2022-03-03 19:20:45,719 INFO L226 Difference]: Without dead ends: 683 [2022-03-03 19:20:45,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:20:45,719 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:45,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 210 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 444 Invalid, 0 Unknown, 461 Unchecked, 0.2s Time] [2022-03-03 19:20:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-03 19:20:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 590. [2022-03-03 19:20:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.135823429541596) internal successors, (1847), 589 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1847 transitions. [2022-03-03 19:20:45,726 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1847 transitions. Word has length 20 [2022-03-03 19:20:45,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:45,726 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1847 transitions. [2022-03-03 19:20:45,726 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 19:20:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1847 transitions. [2022-03-03 19:20:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:45,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:45,727 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 19:20:45,743 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 19:20:45,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2022-03-03 19:20:45,943 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash -8975829, now seen corresponding path program 118 times [2022-03-03 19:20:45,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:45,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178598045] [2022-03-03 19:20:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:46,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:46,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178598045] [2022-03-03 19:20:46,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178598045] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:46,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427608303] [2022-03-03 19:20:46,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:20:46,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:46,099 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 19:20:46,099 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 19:20:46,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:20:46,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:46,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:46,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:46,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:20:46,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:46,855 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 152 treesize of output 132 [2022-03-03 19:20:46,857 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 112 [2022-03-03 19:20:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:47,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:48,157 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:48,158 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 122 treesize of output 112 [2022-03-03 19:20:48,692 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:48,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:20:48,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:48,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 101 [2022-03-03 19:20:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:48,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427608303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:48,839 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:48,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:48,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802626388] [2022-03-03 19:20:48,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:48,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:48,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:48,839 INFO L87 Difference]: Start difference. First operand 590 states and 1847 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 19:20:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:49,481 INFO L93 Difference]: Finished difference Result 712 states and 2219 transitions. [2022-03-03 19:20:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:20:49,481 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 19:20:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:49,483 INFO L225 Difference]: With dead ends: 712 [2022-03-03 19:20:49,483 INFO L226 Difference]: Without dead ends: 690 [2022-03-03 19:20:49,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:20:49,483 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:49,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 413 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-03-03 19:20:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-03 19:20:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 592. [2022-03-03 19:20:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 3.1455160744500845) internal successors, (1859), 591 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1859 transitions. [2022-03-03 19:20:49,489 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1859 transitions. Word has length 20 [2022-03-03 19:20:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:49,489 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 1859 transitions. [2022-03-03 19:20:49,489 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 19:20:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1859 transitions. [2022-03-03 19:20:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:49,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:49,490 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 19:20:49,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:49,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:49,706 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash 40794639, now seen corresponding path program 119 times [2022-03-03 19:20:49,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:49,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596032736] [2022-03-03 19:20:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:49,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:49,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596032736] [2022-03-03 19:20:49,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596032736] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:49,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731204984] [2022-03-03 19:20:49,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:20:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:49,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:49,929 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 19:20:49,929 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 19:20:49,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:20:49,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:49,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:49,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:50,089 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 109 treesize of output 91 [2022-03-03 19:20:50,249 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 147 treesize of output 127 [2022-03-03 19:20:50,251 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 127 treesize of output 107 [2022-03-03 19:20:51,103 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 19:20:51,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:51,654 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:51,655 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 148 treesize of output 140 [2022-03-03 19:20:52,003 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:20:52,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 91 [2022-03-03 19:20:52,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 72 [2022-03-03 19:20:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:52,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731204984] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:52,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:52,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:20:52,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618235361] [2022-03-03 19:20:52,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:52,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:20:52,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:20:52,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:20:52,039 INFO L87 Difference]: Start difference. First operand 592 states and 1859 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 19:20:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:55,665 INFO L93 Difference]: Finished difference Result 1082 states and 3168 transitions. [2022-03-03 19:20:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:20:55,665 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 19:20:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:55,667 INFO L225 Difference]: With dead ends: 1082 [2022-03-03 19:20:55,667 INFO L226 Difference]: Without dead ends: 972 [2022-03-03 19:20:55,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=314, Invalid=1666, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:20:55,667 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 269 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:55,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 385 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:20:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-03-03 19:20:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 597. [2022-03-03 19:20:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 3.1593959731543624) internal successors, (1883), 596 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 19:20:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1883 transitions. [2022-03-03 19:20:55,675 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1883 transitions. Word has length 20 [2022-03-03 19:20:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:55,675 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 1883 transitions. [2022-03-03 19:20:55,675 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 19:20:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1883 transitions. [2022-03-03 19:20:55,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:20:55,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:55,676 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 19:20:55,693 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 19:20:55,890 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,SelfDestructingSolverStorable270 [2022-03-03 19:20:55,890 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:55,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:55,890 INFO L85 PathProgramCache]: Analyzing trace with hash -203819107, now seen corresponding path program 120 times [2022-03-03 19:20:55,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:55,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291730105] [2022-03-03 19:20:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:55,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:56,062 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 19:20:56,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:56,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291730105] [2022-03-03 19:20:56,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291730105] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:56,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100674377] [2022-03-03 19:20:56,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:20:56,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:56,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:56,063 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 19:20:56,064 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 19:20:56,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:20:56,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:56,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:20:56,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:56,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:56,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 104 [2022-03-03 19:20:57,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:20:57,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 153 [2022-03-03 19:20:57,941 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 153 treesize of output 133 [2022-03-03 19:20:58,529 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 19:20:58,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:58,938 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:58,938 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 122 treesize of output 112 [2022-03-03 19:20:59,385 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:59,385 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 102 treesize of output 94 [2022-03-03 19:20:59,393 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:20:59,393 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:20:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:59,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100674377] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:59,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:59,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:20:59,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729041983] [2022-03-03 19:20:59,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:59,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:20:59,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:59,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:20:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:20:59,574 INFO L87 Difference]: Start difference. First operand 597 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 19:21:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:00,617 INFO L93 Difference]: Finished difference Result 692 states and 2163 transitions. [2022-03-03 19:21:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:21:00,618 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 19:21:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:00,619 INFO L225 Difference]: With dead ends: 692 [2022-03-03 19:21:00,619 INFO L226 Difference]: Without dead ends: 670 [2022-03-03 19:21:00,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:21:00,619 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 77 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:00,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 341 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 453 Invalid, 0 Unknown, 290 Unchecked, 0.2s Time] [2022-03-03 19:21:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-03 19:21:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 603. [2022-03-03 19:21:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.159468438538206) internal successors, (1902), 602 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 19:21:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1902 transitions. [2022-03-03 19:21:00,626 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1902 transitions. Word has length 20 [2022-03-03 19:21:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:00,626 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1902 transitions. [2022-03-03 19:21:00,626 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 19:21:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1902 transitions. [2022-03-03 19:21:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:00,627 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:00,627 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 19:21:00,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-03-03 19:21:00,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:00,831 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -603901731, now seen corresponding path program 121 times [2022-03-03 19:21:00,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:00,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077576417] [2022-03-03 19:21:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:00,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:01,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:01,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077576417] [2022-03-03 19:21:01,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077576417] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:01,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278216514] [2022-03-03 19:21:01,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:01,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:01,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:01,048 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 19:21:01,049 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 19:21:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:01,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:01,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:01,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 96 treesize of output 82 [2022-03-03 19:21:03,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:03,042 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 151 [2022-03-03 19:21:03,044 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 151 treesize of output 127 [2022-03-03 19:21:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:03,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:03,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:03,855 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-03-03 19:21:04,323 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:04,323 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:21:04,330 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:04,330 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 100 treesize of output 90 [2022-03-03 19:21:04,492 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 19:21:04,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278216514] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:04,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:04,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:04,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514530393] [2022-03-03 19:21:04,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:04,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:04,493 INFO L87 Difference]: Start difference. First operand 603 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 19:21:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:05,066 INFO L93 Difference]: Finished difference Result 677 states and 2133 transitions. [2022-03-03 19:21:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:21:05,066 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 19:21:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:05,067 INFO L225 Difference]: With dead ends: 677 [2022-03-03 19:21:05,067 INFO L226 Difference]: Without dead ends: 670 [2022-03-03 19:21:05,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:21:05,068 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 77 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:05,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 315 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 489 Invalid, 0 Unknown, 426 Unchecked, 0.2s Time] [2022-03-03 19:21:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-03 19:21:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 603. [2022-03-03 19:21:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.159468438538206) internal successors, (1902), 602 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 19:21:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1902 transitions. [2022-03-03 19:21:05,074 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1902 transitions. Word has length 20 [2022-03-03 19:21:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:05,074 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1902 transitions. [2022-03-03 19:21:05,074 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 19:21:05,074 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1902 transitions. [2022-03-03 19:21:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:05,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:05,075 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 19:21:05,093 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 19:21:05,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:05,291 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1696600409, now seen corresponding path program 122 times [2022-03-03 19:21:05,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:05,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061805660] [2022-03-03 19:21:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:05,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:05,463 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 19:21:05,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:05,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061805660] [2022-03-03 19:21:05,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061805660] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:05,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454284253] [2022-03-03 19:21:05,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:21:05,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:05,464 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 19:21:05,465 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 19:21:05,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:05,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:05,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:21:05,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:06,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:06,044 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 120 treesize of output 104 [2022-03-03 19:21:06,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:06,723 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 172 [2022-03-03 19:21:06,725 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 152 [2022-03-03 19:21:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:07,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:07,762 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:07,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:21:08,149 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:08,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:21:08,155 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:08,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:21:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:08,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454284253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:08,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:08,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:08,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13140126] [2022-03-03 19:21:08,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:08,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:08,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:08,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:08,238 INFO L87 Difference]: Start difference. First operand 603 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 19:21:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:08,723 INFO L93 Difference]: Finished difference Result 704 states and 2198 transitions. [2022-03-03 19:21:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:21:08,723 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 19:21:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:08,725 INFO L225 Difference]: With dead ends: 704 [2022-03-03 19:21:08,725 INFO L226 Difference]: Without dead ends: 689 [2022-03-03 19:21:08,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:21:08,725 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:08,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 269 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 377 Invalid, 0 Unknown, 199 Unchecked, 0.1s Time] [2022-03-03 19:21:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-03-03 19:21:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 609. [2022-03-03 19:21:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 3.1595394736842106) internal successors, (1921), 608 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1921 transitions. [2022-03-03 19:21:08,731 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1921 transitions. Word has length 20 [2022-03-03 19:21:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:08,732 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 1921 transitions. [2022-03-03 19:21:08,732 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 19:21:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1921 transitions. [2022-03-03 19:21:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:08,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:08,732 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 19:21:08,750 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 19:21:08,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:08,948 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1719196957, now seen corresponding path program 123 times [2022-03-03 19:21:08,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:08,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205314918] [2022-03-03 19:21:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:09,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:09,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205314918] [2022-03-03 19:21:09,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205314918] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:09,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293132309] [2022-03-03 19:21:09,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:21:09,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:09,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:09,118 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 19:21:09,119 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 19:21:09,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:21:09,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:09,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:09,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:09,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:09,599 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 97 treesize of output 83 [2022-03-03 19:21:10,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:10,402 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 167 treesize of output 147 [2022-03-03 19:21:10,404 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 147 treesize of output 127 [2022-03-03 19:21:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:10,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:11,234 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:11,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:21:11,649 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:11,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:21:11,654 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:11,654 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 106 treesize of output 94 [2022-03-03 19:21:11,765 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 19:21:11,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293132309] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:11,765 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:11,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:11,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935729959] [2022-03-03 19:21:11,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:11,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:11,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:11,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:11,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:11,773 INFO L87 Difference]: Start difference. First operand 609 states and 1921 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 19:21:13,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:13,153 INFO L93 Difference]: Finished difference Result 847 states and 2537 transitions. [2022-03-03 19:21:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:21:13,153 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 19:21:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:13,154 INFO L225 Difference]: With dead ends: 847 [2022-03-03 19:21:13,154 INFO L226 Difference]: Without dead ends: 773 [2022-03-03 19:21:13,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=1517, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:21:13,155 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 169 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 647 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:13,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 531 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 928 Invalid, 0 Unknown, 647 Unchecked, 0.3s Time] [2022-03-03 19:21:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-03-03 19:21:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 603. [2022-03-03 19:21:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.159468438538206) internal successors, (1902), 602 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 19:21:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1902 transitions. [2022-03-03 19:21:13,162 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1902 transitions. Word has length 20 [2022-03-03 19:21:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:13,162 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1902 transitions. [2022-03-03 19:21:13,162 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 19:21:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1902 transitions. [2022-03-03 19:21:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:13,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:13,163 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 19:21:13,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:13,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:13,379 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:13,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash -82335449, now seen corresponding path program 124 times [2022-03-03 19:21:13,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:13,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102366436] [2022-03-03 19:21:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:13,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:13,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102366436] [2022-03-03 19:21:13,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102366436] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:13,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493696678] [2022-03-03 19:21:13,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:21:13,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:13,530 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 19:21:13,530 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 19:21:13,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:21:13,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:13,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:14,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:14,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 140 treesize of output 122 [2022-03-03 19:21:14,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:14,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 201 treesize of output 179 [2022-03-03 19:21:14,483 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 157 [2022-03-03 19:21:15,141 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 19:21:15,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:15,336 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:15,337 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:21:15,663 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:15,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:21:15,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:15,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:21:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:15,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493696678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:15,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:15,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:15,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108016151] [2022-03-03 19:21:15,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:15,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:15,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:15,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:15,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:15,760 INFO L87 Difference]: Start difference. First operand 603 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 19:21:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:16,603 INFO L93 Difference]: Finished difference Result 802 states and 2423 transitions. [2022-03-03 19:21:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:21:16,604 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 19:21:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:16,605 INFO L225 Difference]: With dead ends: 802 [2022-03-03 19:21:16,605 INFO L226 Difference]: Without dead ends: 709 [2022-03-03 19:21:16,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:21:16,605 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 132 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:16,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 457 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 719 Invalid, 0 Unknown, 170 Unchecked, 0.3s Time] [2022-03-03 19:21:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-03 19:21:16,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 608. [2022-03-03 19:21:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.1598023064250413) internal successors, (1918), 607 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 19:21:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1918 transitions. [2022-03-03 19:21:16,612 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1918 transitions. Word has length 20 [2022-03-03 19:21:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:16,612 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 1918 transitions. [2022-03-03 19:21:16,612 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 19:21:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1918 transitions. [2022-03-03 19:21:16,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:16,613 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:16,613 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 19:21:16,631 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 19:21:16,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:16,829 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash 511715905, now seen corresponding path program 125 times [2022-03-03 19:21:16,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:16,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078368761] [2022-03-03 19:21:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:16,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:16,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078368761] [2022-03-03 19:21:16,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078368761] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:16,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560190063] [2022-03-03 19:21:16,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:21:16,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:16,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:16,978 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 19:21:16,978 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 19:21:17,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:17,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:17,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:21:17,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:17,271 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 113 treesize of output 97 [2022-03-03 19:21:17,638 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 147 treesize of output 129 [2022-03-03 19:21:17,640 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 111 [2022-03-03 19:21:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:17,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:18,135 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:18,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:21:18,436 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:21:18,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 77 [2022-03-03 19:21:18,438 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 74 treesize of output 58 [2022-03-03 19:21:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:18,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560190063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:18,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:18,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:21:18,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997915782] [2022-03-03 19:21:18,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:18,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:21:18,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:21:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:21:18,473 INFO L87 Difference]: Start difference. First operand 608 states and 1918 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 19:21:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:20,217 INFO L93 Difference]: Finished difference Result 849 states and 2565 transitions. [2022-03-03 19:21:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:21:20,217 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 19:21:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:20,218 INFO L225 Difference]: With dead ends: 849 [2022-03-03 19:21:20,218 INFO L226 Difference]: Without dead ends: 783 [2022-03-03 19:21:20,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:21:20,219 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 144 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:20,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 430 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:21:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-03-03 19:21:20,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 612. [2022-03-03 19:21:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.1522094926350244) internal successors, (1926), 611 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1926 transitions. [2022-03-03 19:21:20,226 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1926 transitions. Word has length 20 [2022-03-03 19:21:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:20,226 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1926 transitions. [2022-03-03 19:21:20,226 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 19:21:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1926 transitions. [2022-03-03 19:21:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:20,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:20,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:20,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:20,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:20,442 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1943049615, now seen corresponding path program 126 times [2022-03-03 19:21:20,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:20,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651885857] [2022-03-03 19:21:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:20,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:20,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:20,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651885857] [2022-03-03 19:21:20,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651885857] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:20,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63511922] [2022-03-03 19:21:20,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:21:20,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:20,588 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 19:21:20,591 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 19:21:20,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:21:20,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:20,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:20,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:21,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:21,076 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-03-03 19:21:21,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:21,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 153 [2022-03-03 19:21:21,559 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 153 treesize of output 133 [2022-03-03 19:21:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:22,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:22,538 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:22,538 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 111 treesize of output 103 [2022-03-03 19:21:22,900 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:22,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:21:22,906 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:22,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:21:23,074 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 19:21:23,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63511922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:23,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:23,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:23,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431694473] [2022-03-03 19:21:23,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:23,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:23,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:23,075 INFO L87 Difference]: Start difference. First operand 612 states and 1926 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 19:21:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:24,655 INFO L93 Difference]: Finished difference Result 855 states and 2613 transitions. [2022-03-03 19:21:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 19:21:24,655 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 19:21:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:24,657 INFO L225 Difference]: With dead ends: 855 [2022-03-03 19:21:24,657 INFO L226 Difference]: Without dead ends: 790 [2022-03-03 19:21:24,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=1832, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:21:24,657 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 121 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:24,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 527 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 891 Invalid, 0 Unknown, 388 Unchecked, 0.4s Time] [2022-03-03 19:21:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-03-03 19:21:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 612. [2022-03-03 19:21:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.1522094926350244) internal successors, (1926), 611 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1926 transitions. [2022-03-03 19:21:24,664 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1926 transitions. Word has length 20 [2022-03-03 19:21:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:24,664 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1926 transitions. [2022-03-03 19:21:24,664 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 19:21:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1926 transitions. [2022-03-03 19:21:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:24,665 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:24,665 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 19:21:24,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:24,881 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,SelfDestructingSolverStorable277 [2022-03-03 19:21:24,881 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash -465240029, now seen corresponding path program 127 times [2022-03-03 19:21:24,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:24,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756570203] [2022-03-03 19:21:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:25,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:25,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756570203] [2022-03-03 19:21:25,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756570203] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:25,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218061134] [2022-03-03 19:21:25,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:25,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:25,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:25,100 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 19:21:25,101 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 19:21:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:25,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:25,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:25,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:21:25,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:25,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 187 treesize of output 161 [2022-03-03 19:21:25,975 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 161 treesize of output 135 [2022-03-03 19:21:26,765 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 19:21:26,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:27,265 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:27,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:21:27,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:27,584 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 118 treesize of output 108 [2022-03-03 19:21:27,589 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:27,589 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 100 treesize of output 90 [2022-03-03 19:21:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:27,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218061134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:27,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:27,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:27,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791909895] [2022-03-03 19:21:27,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:27,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:27,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:27,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:27,761 INFO L87 Difference]: Start difference. First operand 612 states and 1926 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 19:21:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:28,719 INFO L93 Difference]: Finished difference Result 716 states and 2242 transitions. [2022-03-03 19:21:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:21:28,719 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 19:21:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:28,721 INFO L225 Difference]: With dead ends: 716 [2022-03-03 19:21:28,721 INFO L226 Difference]: Without dead ends: 674 [2022-03-03 19:21:28,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:21:28,721 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 82 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 527 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:28,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 296 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 582 Invalid, 0 Unknown, 527 Unchecked, 0.2s Time] [2022-03-03 19:21:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-03-03 19:21:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 616. [2022-03-03 19:21:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 3.1609756097560977) internal successors, (1944), 615 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1944 transitions. [2022-03-03 19:21:28,727 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1944 transitions. Word has length 20 [2022-03-03 19:21:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:28,727 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1944 transitions. [2022-03-03 19:21:28,727 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 19:21:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1944 transitions. [2022-03-03 19:21:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:28,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:28,728 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 19:21:28,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:28,931 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,SelfDestructingSolverStorable278 [2022-03-03 19:21:28,932 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1519710791, now seen corresponding path program 128 times [2022-03-03 19:21:28,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:28,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456178018] [2022-03-03 19:21:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:29,161 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 19:21:29,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:29,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456178018] [2022-03-03 19:21:29,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456178018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:29,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377790041] [2022-03-03 19:21:29,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:21:29,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:29,162 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 19:21:29,163 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 19:21:29,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:29,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:29,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:21:29,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:29,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:29,526 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 19:21:29,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:29,970 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 172 treesize of output 150 [2022-03-03 19:21:29,972 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 128 [2022-03-03 19:21:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:30,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:31,062 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:31,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:21:31,313 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:31,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:21:31,319 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:31,319 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:21:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:31,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377790041] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:31,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:31,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:31,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660112242] [2022-03-03 19:21:31,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:31,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:31,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:31,419 INFO L87 Difference]: Start difference. First operand 616 states and 1944 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 19:21:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:32,540 INFO L93 Difference]: Finished difference Result 752 states and 2351 transitions. [2022-03-03 19:21:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:21:32,541 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 19:21:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:32,542 INFO L225 Difference]: With dead ends: 752 [2022-03-03 19:21:32,542 INFO L226 Difference]: Without dead ends: 707 [2022-03-03 19:21:32,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:21:32,542 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 85 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:32,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 338 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 736 Invalid, 0 Unknown, 240 Unchecked, 0.3s Time] [2022-03-03 19:21:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-03-03 19:21:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 621. [2022-03-03 19:21:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 3.174193548387097) internal successors, (1968), 620 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1968 transitions. [2022-03-03 19:21:32,549 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1968 transitions. Word has length 20 [2022-03-03 19:21:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:32,549 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1968 transitions. [2022-03-03 19:21:32,549 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 19:21:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1968 transitions. [2022-03-03 19:21:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:32,550 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:32,550 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 19:21:32,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:32,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2022-03-03 19:21:32,763 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1653859553, now seen corresponding path program 129 times [2022-03-03 19:21:32,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:32,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609597620] [2022-03-03 19:21:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:32,948 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 19:21:32,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:32,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609597620] [2022-03-03 19:21:32,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609597620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:32,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515226086] [2022-03-03 19:21:32,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:21:32,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:32,949 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 19:21:32,950 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 19:21:32,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:21:32,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:21:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:33,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:33,298 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 129 treesize of output 109 [2022-03-03 19:21:33,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:33,858 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 159 treesize of output 137 [2022-03-03 19:21:33,861 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 137 treesize of output 115 [2022-03-03 19:21:34,947 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 19:21:34,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:35,379 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:35,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:21:35,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:35,611 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 102 treesize of output 94 [2022-03-03 19:21:35,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:35,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:21:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:35,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515226086] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:35,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:35,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:35,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165298904] [2022-03-03 19:21:35,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:35,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:35,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:35,696 INFO L87 Difference]: Start difference. First operand 621 states and 1968 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 19:21:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:36,856 INFO L93 Difference]: Finished difference Result 794 states and 2451 transitions. [2022-03-03 19:21:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:21:36,856 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 19:21:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:36,858 INFO L225 Difference]: With dead ends: 794 [2022-03-03 19:21:36,858 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 19:21:36,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:21:36,858 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 97 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:36,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 356 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 783 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-03-03 19:21:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 19:21:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 624. [2022-03-03 19:21:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 3.186195826645265) internal successors, (1985), 623 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1985 transitions. [2022-03-03 19:21:36,865 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1985 transitions. Word has length 20 [2022-03-03 19:21:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:36,865 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 1985 transitions. [2022-03-03 19:21:36,865 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 19:21:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1985 transitions. [2022-03-03 19:21:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:36,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:36,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:36,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-03-03 19:21:37,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:37,069 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1680967075, now seen corresponding path program 130 times [2022-03-03 19:21:37,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:37,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885150395] [2022-03-03 19:21:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:37,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:37,279 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 19:21:37,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:37,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885150395] [2022-03-03 19:21:37,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885150395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:37,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899181835] [2022-03-03 19:21:37,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:21:37,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:37,281 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 19:21:37,282 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 19:21:37,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:21:37,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:37,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:37,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:37,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:37,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:21:38,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:38,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 189 treesize of output 163 [2022-03-03 19:21:38,323 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 163 treesize of output 137 [2022-03-03 19:21:39,775 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 19:21:39,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:40,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:40,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 124 [2022-03-03 19:21:41,195 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:41,195 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:21:41,201 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:41,201 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:21:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:41,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899181835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:41,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:41,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:41,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917203951] [2022-03-03 19:21:41,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:41,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:41,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:41,344 INFO L87 Difference]: Start difference. First operand 624 states and 1985 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 19:21:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:42,425 INFO L93 Difference]: Finished difference Result 858 states and 2683 transitions. [2022-03-03 19:21:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:21:42,425 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 19:21:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:42,427 INFO L225 Difference]: With dead ends: 858 [2022-03-03 19:21:42,427 INFO L226 Difference]: Without dead ends: 814 [2022-03-03 19:21:42,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:21:42,427 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 82 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:42,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 415 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 843 Invalid, 0 Unknown, 357 Unchecked, 0.4s Time] [2022-03-03 19:21:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-03-03 19:21:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 627. [2022-03-03 19:21:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 3.1900958466453675) internal successors, (1997), 626 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 19:21:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1997 transitions. [2022-03-03 19:21:42,435 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1997 transitions. Word has length 20 [2022-03-03 19:21:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:42,435 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1997 transitions. [2022-03-03 19:21:42,435 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 19:21:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1997 transitions. [2022-03-03 19:21:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:42,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:42,436 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 19:21:42,454 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 19:21:42,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:42,639 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1730737543, now seen corresponding path program 131 times [2022-03-03 19:21:42,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:42,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544321506] [2022-03-03 19:21:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:42,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:42,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544321506] [2022-03-03 19:21:42,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544321506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:42,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713257914] [2022-03-03 19:21:42,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:21:42,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:42,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:42,868 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 19:21:42,869 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 19:21:42,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:21:42,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:42,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:21:42,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:43,088 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 19:21:43,367 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 171 [2022-03-03 19:21:43,370 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 171 treesize of output 147 [2022-03-03 19:21:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:45,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:45,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:45,888 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:21:46,260 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:21:46,261 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 94 treesize of output 81 [2022-03-03 19:21:46,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-03-03 19:21:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:46,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713257914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:46,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:46,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:21:46,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61942063] [2022-03-03 19:21:46,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:46,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:21:46,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:21:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:21:46,268 INFO L87 Difference]: Start difference. First operand 627 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 19:21:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:48,598 INFO L93 Difference]: Finished difference Result 922 states and 2773 transitions. [2022-03-03 19:21:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:21:48,599 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 19:21:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:48,600 INFO L225 Difference]: With dead ends: 922 [2022-03-03 19:21:48,600 INFO L226 Difference]: Without dead ends: 907 [2022-03-03 19:21:48,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=175, Invalid=1085, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:21:48,600 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 175 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:48,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 306 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:21:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-03-03 19:21:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 629. [2022-03-03 19:21:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 3.194267515923567) internal successors, (2006), 628 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 2006 transitions. [2022-03-03 19:21:48,608 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 2006 transitions. Word has length 20 [2022-03-03 19:21:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:48,608 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 2006 transitions. [2022-03-03 19:21:48,608 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 19:21:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 2006 transitions. [2022-03-03 19:21:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:48,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:48,609 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 19:21:48,624 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 19:21:48,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-03-03 19:21:48,824 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:48,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 560636147, now seen corresponding path program 132 times [2022-03-03 19:21:48,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:48,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30134191] [2022-03-03 19:21:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:48,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:48,964 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 19:21:48,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:48,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30134191] [2022-03-03 19:21:48,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30134191] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:48,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816251362] [2022-03-03 19:21:48,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:21:48,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:48,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:48,966 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 19:21:48,966 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 19:21:48,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:21:48,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:21:48,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:49,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:49,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:21:50,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:50,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 184 [2022-03-03 19:21:50,444 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 158 [2022-03-03 19:21:51,172 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 19:21:51,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:51,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:51,485 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:21:51,690 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:51,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:21:51,695 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:51,695 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 86 treesize of output 78 [2022-03-03 19:21:51,782 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 19:21:51,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816251362] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:51,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:51,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:51,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775185622] [2022-03-03 19:21:51,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:51,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:51,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:51,783 INFO L87 Difference]: Start difference. First operand 629 states and 2006 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 19:21:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:52,903 INFO L93 Difference]: Finished difference Result 825 states and 2521 transitions. [2022-03-03 19:21:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:21:52,903 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 19:21:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:52,904 INFO L225 Difference]: With dead ends: 825 [2022-03-03 19:21:52,904 INFO L226 Difference]: Without dead ends: 732 [2022-03-03 19:21:52,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:21:52,905 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 122 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:52,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 384 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 584 Invalid, 0 Unknown, 165 Unchecked, 0.2s Time] [2022-03-03 19:21:52,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-03-03 19:21:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 632. [2022-03-03 19:21:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 3.1996830427892236) internal successors, (2019), 631 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2019 transitions. [2022-03-03 19:21:52,912 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2019 transitions. Word has length 20 [2022-03-03 19:21:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:52,912 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2019 transitions. [2022-03-03 19:21:52,912 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 19:21:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2019 transitions. [2022-03-03 19:21:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:52,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:52,913 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 19:21:52,930 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 19:21:53,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:53,128 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash 5471917, now seen corresponding path program 133 times [2022-03-03 19:21:53,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:53,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671346805] [2022-03-03 19:21:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:53,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:53,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:53,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671346805] [2022-03-03 19:21:53,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671346805] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:53,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110369435] [2022-03-03 19:21:53,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:53,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:53,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:53,274 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 19:21:53,275 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 19:21:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:53,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:21:53,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:53,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:53,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:21:55,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:55,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 177 treesize of output 153 [2022-03-03 19:21:55,764 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 153 treesize of output 129 [2022-03-03 19:21:56,695 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 19:21:56,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:57,148 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:57,148 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 90 treesize of output 84 [2022-03-03 19:21:57,633 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:57,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:21:57,639 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:21:57,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:21:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:57,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110369435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:57,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:57,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:21:57,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598325493] [2022-03-03 19:21:57,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:57,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:21:57,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:21:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:21:57,752 INFO L87 Difference]: Start difference. First operand 632 states and 2019 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 19:21:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:58,635 INFO L93 Difference]: Finished difference Result 785 states and 2409 transitions. [2022-03-03 19:21:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:21:58,635 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 19:21:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:58,637 INFO L225 Difference]: With dead ends: 785 [2022-03-03 19:21:58,637 INFO L226 Difference]: Without dead ends: 744 [2022-03-03 19:21:58,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:21:58,637 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 83 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:58,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 381 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 744 Invalid, 0 Unknown, 115 Unchecked, 0.3s Time] [2022-03-03 19:21:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-03-03 19:21:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 630. [2022-03-03 19:21:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 3.1971383147853736) internal successors, (2011), 629 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2011 transitions. [2022-03-03 19:21:58,644 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2011 transitions. Word has length 20 [2022-03-03 19:21:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:58,644 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2011 transitions. [2022-03-03 19:21:58,644 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 19:21:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2011 transitions. [2022-03-03 19:21:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:21:58,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:58,645 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 19:21:58,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:58,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:58,860 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 599523271, now seen corresponding path program 134 times [2022-03-03 19:21:58,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:58,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824361363] [2022-03-03 19:21:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:59,068 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 19:21:59,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:59,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824361363] [2022-03-03 19:21:59,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824361363] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:59,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924431319] [2022-03-03 19:21:59,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:21:59,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:59,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:59,069 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 19:21:59,070 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 19:21:59,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:59,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:59,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:21:59,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:59,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:21:59,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:22:01,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:01,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 166 treesize of output 146 [2022-03-03 19:22:01,671 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 126 [2022-03-03 19:22:02,074 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 19:22:02,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:02,328 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:02,329 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 90 treesize of output 84 [2022-03-03 19:22:02,567 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:02,567 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 102 treesize of output 94 [2022-03-03 19:22:02,573 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:02,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:22:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:02,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924431319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:02,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:02,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:02,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829793248] [2022-03-03 19:22:02,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:02,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:02,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:02,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:02,664 INFO L87 Difference]: Start difference. First operand 630 states and 2011 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 19:22:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:03,116 INFO L93 Difference]: Finished difference Result 726 states and 2289 transitions. [2022-03-03 19:22:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:22:03,116 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 19:22:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:03,117 INFO L225 Difference]: With dead ends: 726 [2022-03-03 19:22:03,118 INFO L226 Difference]: Without dead ends: 682 [2022-03-03 19:22:03,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:22:03,118 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:03,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 266 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 390 Invalid, 0 Unknown, 239 Unchecked, 0.1s Time] [2022-03-03 19:22:03,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-03-03 19:22:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 642. [2022-03-03 19:22:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.1840873634945397) internal successors, (2041), 641 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2041 transitions. [2022-03-03 19:22:03,124 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2041 transitions. Word has length 20 [2022-03-03 19:22:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:03,125 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2041 transitions. [2022-03-03 19:22:03,125 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 19:22:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2041 transitions. [2022-03-03 19:22:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:03,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:03,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:03,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-03-03 19:22:03,341 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,SelfDestructingSolverStorable285 [2022-03-03 19:22:03,341 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1572453893, now seen corresponding path program 135 times [2022-03-03 19:22:03,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:03,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159605841] [2022-03-03 19:22:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:03,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:03,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159605841] [2022-03-03 19:22:03,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159605841] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:03,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279946635] [2022-03-03 19:22:03,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:22:03,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:03,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:03,494 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 19:22:03,495 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 19:22:03,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:22:03,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:03,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:22:03,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:03,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:03,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:22:05,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:05,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 166 treesize of output 148 [2022-03-03 19:22:05,730 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 148 treesize of output 130 [2022-03-03 19:22:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:06,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:06,414 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:06,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:22:06,630 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:06,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:22:06,635 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:06,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:22:06,721 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 19:22:06,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279946635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:06,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:06,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:06,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352875117] [2022-03-03 19:22:06,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:06,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:06,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:06,722 INFO L87 Difference]: Start difference. First operand 642 states and 2041 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 19:22:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:07,442 INFO L93 Difference]: Finished difference Result 807 states and 2547 transitions. [2022-03-03 19:22:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:22:07,443 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 19:22:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:07,444 INFO L225 Difference]: With dead ends: 807 [2022-03-03 19:22:07,444 INFO L226 Difference]: Without dead ends: 763 [2022-03-03 19:22:07,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:22:07,445 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 87 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:07,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 453 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 760 Invalid, 0 Unknown, 420 Unchecked, 0.3s Time] [2022-03-03 19:22:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-03 19:22:07,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 647. [2022-03-03 19:22:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 3.1904024767801857) internal successors, (2061), 646 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 2061 transitions. [2022-03-03 19:22:07,452 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 2061 transitions. Word has length 20 [2022-03-03 19:22:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:07,452 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 2061 transitions. [2022-03-03 19:22:07,452 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 19:22:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 2061 transitions. [2022-03-03 19:22:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:07,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:07,453 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 19:22:07,469 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 19:22:07,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:07,669 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -656629011, now seen corresponding path program 136 times [2022-03-03 19:22:07,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:07,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887239822] [2022-03-03 19:22:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:07,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:07,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887239822] [2022-03-03 19:22:07,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887239822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:07,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141526418] [2022-03-03 19:22:07,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:22:07,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:07,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:07,879 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 19:22:07,879 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 19:22:07,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:22:07,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:07,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:22:07,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:08,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:08,149 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-03-03 19:22:08,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:08,760 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 154 [2022-03-03 19:22:08,761 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 132 [2022-03-03 19:22:09,401 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 19:22:09,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:09,972 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:09,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 118 [2022-03-03 19:22:10,425 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:10,425 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 106 treesize of output 98 [2022-03-03 19:22:10,429 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:10,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 82 [2022-03-03 19:22:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:10,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141526418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:10,520 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:10,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:10,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770215196] [2022-03-03 19:22:10,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:10,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:10,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:10,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:10,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:10,521 INFO L87 Difference]: Start difference. First operand 647 states and 2061 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 19:22:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:11,585 INFO L93 Difference]: Finished difference Result 722 states and 2303 transitions. [2022-03-03 19:22:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:22:11,585 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 19:22:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:11,586 INFO L225 Difference]: With dead ends: 722 [2022-03-03 19:22:11,586 INFO L226 Difference]: Without dead ends: 707 [2022-03-03 19:22:11,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:22:11,587 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:11,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 275 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 403 Unchecked, 0.1s Time] [2022-03-03 19:22:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-03-03 19:22:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 651. [2022-03-03 19:22:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 3.1923076923076925) internal successors, (2075), 650 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 2075 transitions. [2022-03-03 19:22:11,594 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 2075 transitions. Word has length 20 [2022-03-03 19:22:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:11,594 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 2075 transitions. [2022-03-03 19:22:11,594 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 19:22:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 2075 transitions. [2022-03-03 19:22:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:11,595 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:11,595 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 19:22:11,611 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 19:22:11,810 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,SelfDestructingSolverStorable287 [2022-03-03 19:22:11,811 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash 690501745, now seen corresponding path program 137 times [2022-03-03 19:22:11,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:11,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504831894] [2022-03-03 19:22:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:12,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:12,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504831894] [2022-03-03 19:22:12,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504831894] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:12,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800487870] [2022-03-03 19:22:12,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:22:12,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:12,092 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 19:22:12,093 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 19:22:12,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:22:12,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:12,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:22:12,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:12,329 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 19:22:12,941 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 162 treesize of output 140 [2022-03-03 19:22:12,944 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 140 treesize of output 118 [2022-03-03 19:22:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:13,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:14,418 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:14,418 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-03-03 19:22:14,739 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:22:14,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 91 [2022-03-03 19:22:14,741 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 88 treesize of output 72 [2022-03-03 19:22:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:14,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800487870] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:14,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:14,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:22:14,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909521749] [2022-03-03 19:22:14,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:14,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:22:14,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:22:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:22:14,787 INFO L87 Difference]: Start difference. First operand 651 states and 2075 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 19:22:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:17,306 INFO L93 Difference]: Finished difference Result 979 states and 2932 transitions. [2022-03-03 19:22:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:22:17,307 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 19:22:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:17,308 INFO L225 Difference]: With dead ends: 979 [2022-03-03 19:22:17,308 INFO L226 Difference]: Without dead ends: 935 [2022-03-03 19:22:17,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=252, Invalid=1640, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:22:17,308 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 257 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:17,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 386 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:22:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-03-03 19:22:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 649. [2022-03-03 19:22:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 3.191358024691358) internal successors, (2068), 648 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 19:22:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 2068 transitions. [2022-03-03 19:22:17,316 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 2068 transitions. Word has length 20 [2022-03-03 19:22:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:17,317 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 2068 transitions. [2022-03-03 19:22:17,317 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 19:22:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 2068 transitions. [2022-03-03 19:22:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:17,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:17,317 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 19:22:17,333 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 19:22:17,533 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,SelfDestructingSolverStorable288 [2022-03-03 19:22:17,533 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:17,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash -484988899, now seen corresponding path program 138 times [2022-03-03 19:22:17,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:17,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906728868] [2022-03-03 19:22:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:17,765 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 19:22:17,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:17,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906728868] [2022-03-03 19:22:17,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906728868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:17,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613800784] [2022-03-03 19:22:17,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:22:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:17,767 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 19:22:17,768 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 19:22:17,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:22:17,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:17,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:22:17,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:18,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:18,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:22:19,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:19,053 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 147 treesize of output 129 [2022-03-03 19:22:19,067 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 111 [2022-03-03 19:22:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:19,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:20,001 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:20,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 143 [2022-03-03 19:22:20,303 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:20,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 98 [2022-03-03 19:22:20,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:20,307 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 82 [2022-03-03 19:22:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:20,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613800784] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:20,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:20,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:20,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942980721] [2022-03-03 19:22:20,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:20,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:20,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:20,379 INFO L87 Difference]: Start difference. First operand 649 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 19:22:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:21,035 INFO L93 Difference]: Finished difference Result 772 states and 2424 transitions. [2022-03-03 19:22:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:22:21,035 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 19:22:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:21,037 INFO L225 Difference]: With dead ends: 772 [2022-03-03 19:22:21,037 INFO L226 Difference]: Without dead ends: 750 [2022-03-03 19:22:21,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:22:21,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:21,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 276 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 514 Invalid, 0 Unknown, 303 Unchecked, 0.2s Time] [2022-03-03 19:22:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-03-03 19:22:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 649. [2022-03-03 19:22:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 3.191358024691358) internal successors, (2068), 648 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 19:22:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 2068 transitions. [2022-03-03 19:22:21,047 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 2068 transitions. Word has length 20 [2022-03-03 19:22:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:21,048 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 2068 transitions. [2022-03-03 19:22:21,048 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 19:22:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 2068 transitions. [2022-03-03 19:22:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:21,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:21,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:21,066 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 19:22:21,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:21,265 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1426144563, now seen corresponding path program 139 times [2022-03-03 19:22:21,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:21,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11221335] [2022-03-03 19:22:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:21,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:21,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11221335] [2022-03-03 19:22:21,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11221335] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:21,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526795392] [2022-03-03 19:22:21,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:22:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:21,462 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 19:22:21,463 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 19:22:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:21,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:22:21,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:21,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:21,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:22:23,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:23,028 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 141 [2022-03-03 19:22:23,030 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 19:22:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:23,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:23,669 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:23,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 112 [2022-03-03 19:22:24,013 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:24,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 98 [2022-03-03 19:22:24,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:24,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 82 [2022-03-03 19:22:24,093 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 19:22:24,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526795392] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:24,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:24,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:24,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109920386] [2022-03-03 19:22:24,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:24,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:24,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:24,094 INFO L87 Difference]: Start difference. First operand 649 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 19:22:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:24,576 INFO L93 Difference]: Finished difference Result 861 states and 2678 transitions. [2022-03-03 19:22:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:22:24,576 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 19:22:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:24,578 INFO L225 Difference]: With dead ends: 861 [2022-03-03 19:22:24,578 INFO L226 Difference]: Without dead ends: 815 [2022-03-03 19:22:24,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:22:24,578 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:24,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 410 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 389 Invalid, 0 Unknown, 405 Unchecked, 0.1s Time] [2022-03-03 19:22:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-03-03 19:22:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 661. [2022-03-03 19:22:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 3.1787878787878787) internal successors, (2098), 660 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 2098 transitions. [2022-03-03 19:22:24,586 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 2098 transitions. Word has length 20 [2022-03-03 19:22:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:24,586 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 2098 transitions. [2022-03-03 19:22:24,586 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 19:22:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 2098 transitions. [2022-03-03 19:22:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:24,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:24,587 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 19:22:24,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-03-03 19:22:24,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:24,802 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash 288219855, now seen corresponding path program 140 times [2022-03-03 19:22:24,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:24,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531060018] [2022-03-03 19:22:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:25,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:25,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531060018] [2022-03-03 19:22:25,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531060018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:25,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484687606] [2022-03-03 19:22:25,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:22:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:25,059 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 19:22:25,060 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 19:22:25,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:25,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:25,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:22:25,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:25,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:25,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:22:27,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:27,144 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 159 treesize of output 139 [2022-03-03 19:22:27,145 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 139 treesize of output 119 [2022-03-03 19:22:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:27,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:27,972 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:27,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-03-03 19:22:28,188 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:28,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 105 [2022-03-03 19:22:28,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:28,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 87 [2022-03-03 19:22:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:28,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484687606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:28,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:28,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:28,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338772489] [2022-03-03 19:22:28,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:28,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:28,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:28,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:28,394 INFO L87 Difference]: Start difference. First operand 661 states and 2098 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 19:22:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:29,109 INFO L93 Difference]: Finished difference Result 798 states and 2537 transitions. [2022-03-03 19:22:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:22:29,110 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 19:22:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:29,111 INFO L225 Difference]: With dead ends: 798 [2022-03-03 19:22:29,111 INFO L226 Difference]: Without dead ends: 770 [2022-03-03 19:22:29,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:22:29,111 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 92 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:29,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 360 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 516 Invalid, 0 Unknown, 130 Unchecked, 0.2s Time] [2022-03-03 19:22:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-03-03 19:22:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 653. [2022-03-03 19:22:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 3.1932515337423313) internal successors, (2082), 652 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 2082 transitions. [2022-03-03 19:22:29,119 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 2082 transitions. Word has length 20 [2022-03-03 19:22:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:29,119 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 2082 transitions. [2022-03-03 19:22:29,119 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 19:22:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 2082 transitions. [2022-03-03 19:22:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:29,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:29,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:29,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-03-03 19:22:29,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:29,331 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1930670125, now seen corresponding path program 141 times [2022-03-03 19:22:29,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:29,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618217088] [2022-03-03 19:22:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:29,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:29,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618217088] [2022-03-03 19:22:29,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618217088] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:29,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673076795] [2022-03-03 19:22:29,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:22:29,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:29,615 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 19:22:29,615 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 19:22:29,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:22:29,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:29,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:22:29,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:29,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:29,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:22:31,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:31,156 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 170 treesize of output 148 [2022-03-03 19:22:31,158 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 148 treesize of output 126 [2022-03-03 19:22:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:31,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:32,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:32,043 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 140 treesize of output 132 [2022-03-03 19:22:32,265 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:32,265 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 110 [2022-03-03 19:22:32,270 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:32,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 92 [2022-03-03 19:22:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:32,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673076795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:32,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:32,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:32,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591504876] [2022-03-03 19:22:32,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:32,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:32,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:32,426 INFO L87 Difference]: Start difference. First operand 653 states and 2082 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 19:22:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:33,119 INFO L93 Difference]: Finished difference Result 773 states and 2452 transitions. [2022-03-03 19:22:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:22:33,119 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 19:22:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:33,120 INFO L225 Difference]: With dead ends: 773 [2022-03-03 19:22:33,120 INFO L226 Difference]: Without dead ends: 725 [2022-03-03 19:22:33,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:22:33,121 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 75 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:33,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 458 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 548 Invalid, 0 Unknown, 216 Unchecked, 0.2s Time] [2022-03-03 19:22:33,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-03-03 19:22:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 659. [2022-03-03 19:22:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 3.1930091185410334) internal successors, (2101), 658 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 2101 transitions. [2022-03-03 19:22:33,127 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 2101 transitions. Word has length 20 [2022-03-03 19:22:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:33,128 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 2101 transitions. [2022-03-03 19:22:33,128 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 19:22:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 2101 transitions. [2022-03-03 19:22:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:33,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:33,128 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 19:22:33,144 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 19:22:33,344 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,SelfDestructingSolverStorable292 [2022-03-03 19:22:33,344 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2044381081, now seen corresponding path program 142 times [2022-03-03 19:22:33,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:33,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627802970] [2022-03-03 19:22:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:33,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:33,548 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 19:22:33,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:33,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627802970] [2022-03-03 19:22:33,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627802970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:33,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463458669] [2022-03-03 19:22:33,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:22:33,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:33,550 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 19:22:33,551 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 19:22:33,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:22:33,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:33,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:22:33,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:33,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:33,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:22:34,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:34,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 157 treesize of output 137 [2022-03-03 19:22:34,681 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 117 [2022-03-03 19:22:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:35,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:35,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:35,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 121 [2022-03-03 19:22:35,927 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:35,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:22:35,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:35,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:22:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:36,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463458669] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:36,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:36,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:36,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141927533] [2022-03-03 19:22:36,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:36,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:36,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:36,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:36,027 INFO L87 Difference]: Start difference. First operand 659 states and 2101 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 19:22:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:36,840 INFO L93 Difference]: Finished difference Result 818 states and 2588 transitions. [2022-03-03 19:22:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:22:36,840 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 19:22:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:36,842 INFO L225 Difference]: With dead ends: 818 [2022-03-03 19:22:36,842 INFO L226 Difference]: Without dead ends: 776 [2022-03-03 19:22:36,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:22:36,843 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 107 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 456 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:36,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 434 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 644 Invalid, 0 Unknown, 456 Unchecked, 0.2s Time] [2022-03-03 19:22:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-03-03 19:22:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 661. [2022-03-03 19:22:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 3.193939393939394) internal successors, (2108), 660 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 19:22:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 2108 transitions. [2022-03-03 19:22:36,853 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 2108 transitions. Word has length 20 [2022-03-03 19:22:36,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:36,853 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 2108 transitions. [2022-03-03 19:22:36,853 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 19:22:36,853 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 2108 transitions. [2022-03-03 19:22:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:36,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:36,854 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 19:22:36,878 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 19:22:37,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:37,077 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -59430261, now seen corresponding path program 143 times [2022-03-03 19:22:37,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:37,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069278252] [2022-03-03 19:22:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:37,285 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 19:22:37,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:37,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069278252] [2022-03-03 19:22:37,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069278252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:37,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627470894] [2022-03-03 19:22:37,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:22:37,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:37,287 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 19:22:37,287 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 19:22:37,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:22:37,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:37,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:22:37,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:37,397 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 19:22:38,121 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 210 treesize of output 186 [2022-03-03 19:22:38,123 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 162 [2022-03-03 19:22:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:38,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:39,513 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:39,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:22:39,843 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:22:39,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 81 [2022-03-03 19:22:39,845 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 78 treesize of output 62 [2022-03-03 19:22:39,852 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 19:22:39,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627470894] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:39,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:39,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:22:39,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185845657] [2022-03-03 19:22:39,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:39,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:22:39,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:22:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:22:39,853 INFO L87 Difference]: Start difference. First operand 661 states and 2108 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 19:22:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:44,057 INFO L93 Difference]: Finished difference Result 1035 states and 3100 transitions. [2022-03-03 19:22:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:22:44,057 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 19:22:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:44,059 INFO L225 Difference]: With dead ends: 1035 [2022-03-03 19:22:44,059 INFO L226 Difference]: Without dead ends: 1005 [2022-03-03 19:22:44,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:22:44,059 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 212 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:44,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 428 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:22:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-03-03 19:22:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 661. [2022-03-03 19:22:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 3.193939393939394) internal successors, (2108), 660 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 19:22:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 2108 transitions. [2022-03-03 19:22:44,068 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 2108 transitions. Word has length 20 [2022-03-03 19:22:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:44,068 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 2108 transitions. [2022-03-03 19:22:44,068 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 19:22:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 2108 transitions. [2022-03-03 19:22:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:44,069 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:44,069 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 19:22:44,084 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 19:22:44,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:44,284 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:44,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1228206391, now seen corresponding path program 144 times [2022-03-03 19:22:44,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:44,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696317784] [2022-03-03 19:22:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:44,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:44,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696317784] [2022-03-03 19:22:44,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696317784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:44,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597979156] [2022-03-03 19:22:44,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:22:44,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:44,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:44,547 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 19:22:44,551 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 19:22:44,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:22:44,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:44,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:22:44,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:44,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:44,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:22:47,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:47,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 150 treesize of output 132 [2022-03-03 19:22:47,074 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 114 [2022-03-03 19:22:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:47,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:48,316 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:48,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-03-03 19:22:48,848 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:48,848 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-03-03 19:22:48,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:48,855 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 101 [2022-03-03 19:22:49,042 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 19:22:49,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597979156] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:49,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:49,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:49,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270549981] [2022-03-03 19:22:49,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:49,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:49,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:49,043 INFO L87 Difference]: Start difference. First operand 661 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 19:22:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:49,746 INFO L93 Difference]: Finished difference Result 817 states and 2553 transitions. [2022-03-03 19:22:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:22:49,746 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 19:22:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:49,748 INFO L225 Difference]: With dead ends: 817 [2022-03-03 19:22:49,748 INFO L226 Difference]: Without dead ends: 763 [2022-03-03 19:22:49,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:22:49,748 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 97 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:49,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 441 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 563 Invalid, 0 Unknown, 375 Unchecked, 0.2s Time] [2022-03-03 19:22:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-03 19:22:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 663. [2022-03-03 19:22:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 3.193353474320242) internal successors, (2114), 662 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 2114 transitions. [2022-03-03 19:22:49,755 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 2114 transitions. Word has length 20 [2022-03-03 19:22:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:49,755 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 2114 transitions. [2022-03-03 19:22:49,756 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 19:22:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 2114 transitions. [2022-03-03 19:22:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:49,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:49,756 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 19:22:49,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-03-03 19:22:49,957 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,SelfDestructingSolverStorable295 [2022-03-03 19:22:49,957 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash -745865847, now seen corresponding path program 145 times [2022-03-03 19:22:49,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:49,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625454090] [2022-03-03 19:22:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:50,205 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 19:22:50,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:50,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625454090] [2022-03-03 19:22:50,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625454090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:50,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741697239] [2022-03-03 19:22:50,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:22:50,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:50,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:50,206 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 19:22:50,207 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 19:22:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:50,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:22:50,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:50,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:50,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:22:52,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:52,568 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2022-03-03 19:22:52,570 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 131 treesize of output 113 [2022-03-03 19:22:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:53,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:53,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:53,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 118 [2022-03-03 19:22:54,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:54,199 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 113 [2022-03-03 19:22:54,205 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:54,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 93 [2022-03-03 19:22:54,376 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 19:22:54,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741697239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:54,377 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:54,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:22:54,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530681361] [2022-03-03 19:22:54,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:54,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:22:54,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:22:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:22:54,378 INFO L87 Difference]: Start difference. First operand 663 states and 2114 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 19:22:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:55,346 INFO L93 Difference]: Finished difference Result 776 states and 2458 transitions. [2022-03-03 19:22:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:22:55,347 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 19:22:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:55,348 INFO L225 Difference]: With dead ends: 776 [2022-03-03 19:22:55,348 INFO L226 Difference]: Without dead ends: 769 [2022-03-03 19:22:55,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:22:55,349 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 89 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:55,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 350 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 462 Invalid, 0 Unknown, 408 Unchecked, 0.2s Time] [2022-03-03 19:22:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-03-03 19:22:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 664. [2022-03-03 19:22:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 3.193061840120664) internal successors, (2117), 663 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2117 transitions. [2022-03-03 19:22:55,356 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2117 transitions. Word has length 20 [2022-03-03 19:22:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:55,356 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 2117 transitions. [2022-03-03 19:22:55,356 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 19:22:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2117 transitions. [2022-03-03 19:22:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:22:55,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:55,357 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 19:22:55,375 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 19:22:55,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:55,557 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -921739315, now seen corresponding path program 146 times [2022-03-03 19:22:55,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:55,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327437528] [2022-03-03 19:22:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:55,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:55,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327437528] [2022-03-03 19:22:55,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327437528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:55,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170426030] [2022-03-03 19:22:55,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:22:55,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:55,849 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 19:22:55,849 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 19:22:55,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:55,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:55,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:22:55,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:56,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:56,246 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 109 treesize of output 91 [2022-03-03 19:22:58,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:22:58,589 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 144 [2022-03-03 19:22:58,591 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 122 [2022-03-03 19:22:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:59,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:59,683 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:22:59,683 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-03-03 19:23:00,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:00,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:23:00,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:00,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 108 [2022-03-03 19:23:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:00,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170426030] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:00,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:00,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:00,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575319152] [2022-03-03 19:23:00,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:00,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:00,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:00,355 INFO L87 Difference]: Start difference. First operand 664 states and 2117 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 19:23:01,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:01,087 INFO L93 Difference]: Finished difference Result 823 states and 2601 transitions. [2022-03-03 19:23:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:23:01,088 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 19:23:01,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:01,089 INFO L225 Difference]: With dead ends: 823 [2022-03-03 19:23:01,089 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 19:23:01,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:23:01,089 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 106 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 778 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:01,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 474 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 525 Invalid, 0 Unknown, 778 Unchecked, 0.2s Time] [2022-03-03 19:23:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 19:23:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 670. [2022-03-03 19:23:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 3.192825112107623) internal successors, (2136), 669 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2136 transitions. [2022-03-03 19:23:01,097 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2136 transitions. Word has length 20 [2022-03-03 19:23:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:01,097 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 2136 transitions. [2022-03-03 19:23:01,097 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 19:23:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2136 transitions. [2022-03-03 19:23:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:01,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:01,098 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 19:23:01,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:01,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:01,313 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1378762825, now seen corresponding path program 147 times [2022-03-03 19:23:01,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:01,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060428093] [2022-03-03 19:23:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:01,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:01,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060428093] [2022-03-03 19:23:01,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060428093] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:01,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219022276] [2022-03-03 19:23:01,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:23:01,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:01,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:01,492 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 19:23:01,493 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 19:23:01,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:23:01,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:01,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:01,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:01,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:01,830 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-03-03 19:23:03,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:03,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 182 treesize of output 158 [2022-03-03 19:23:03,258 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 158 treesize of output 134 [2022-03-03 19:23:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:04,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:04,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:04,613 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 111 treesize of output 101 [2022-03-03 19:23:05,069 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:05,070 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 133 treesize of output 121 [2022-03-03 19:23:05,074 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:05,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 101 [2022-03-03 19:23:05,222 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 19:23:05,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219022276] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:05,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:05,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:05,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170958416] [2022-03-03 19:23:05,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:05,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:05,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:05,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:05,223 INFO L87 Difference]: Start difference. First operand 670 states and 2136 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 19:23:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:05,996 INFO L93 Difference]: Finished difference Result 806 states and 2569 transitions. [2022-03-03 19:23:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:23:05,996 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 19:23:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:05,997 INFO L225 Difference]: With dead ends: 806 [2022-03-03 19:23:05,997 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 19:23:05,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:23:05,998 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 90 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 843 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:05,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 405 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 479 Invalid, 0 Unknown, 843 Unchecked, 0.2s Time] [2022-03-03 19:23:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 19:23:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 673. [2022-03-03 19:23:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 3.1949404761904763) internal successors, (2147), 672 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 2147 transitions. [2022-03-03 19:23:06,005 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 2147 transitions. Word has length 20 [2022-03-03 19:23:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:06,005 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 2147 transitions. [2022-03-03 19:23:06,005 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 19:23:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 2147 transitions. [2022-03-03 19:23:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:06,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:06,006 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 19:23:06,022 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 19:23:06,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:06,222 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1401359373, now seen corresponding path program 148 times [2022-03-03 19:23:06,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:06,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282640724] [2022-03-03 19:23:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:06,414 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 19:23:06,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:06,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282640724] [2022-03-03 19:23:06,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282640724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:06,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197849481] [2022-03-03 19:23:06,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:23:06,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:06,416 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 19:23:06,417 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 19:23:06,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:23:06,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:06,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:23:06,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:06,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:06,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:23:07,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:07,887 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 147 [2022-03-03 19:23:07,889 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 147 treesize of output 129 [2022-03-03 19:23:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:08,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:09,083 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:09,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:23:09,298 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:09,299 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:23:09,303 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:09,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:23:09,401 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 19:23:09,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197849481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:09,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:09,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:09,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846118553] [2022-03-03 19:23:09,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:09,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:09,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:09,402 INFO L87 Difference]: Start difference. First operand 673 states and 2147 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 19:23:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:10,869 INFO L93 Difference]: Finished difference Result 881 states and 2702 transitions. [2022-03-03 19:23:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:23:10,869 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 19:23:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:10,870 INFO L225 Difference]: With dead ends: 881 [2022-03-03 19:23:10,870 INFO L226 Difference]: Without dead ends: 822 [2022-03-03 19:23:10,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:23:10,870 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 215 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:10,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 414 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 642 Invalid, 0 Unknown, 268 Unchecked, 0.3s Time] [2022-03-03 19:23:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-03 19:23:10,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 679. [2022-03-03 19:23:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.190265486725664) internal successors, (2163), 678 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2163 transitions. [2022-03-03 19:23:10,878 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2163 transitions. Word has length 20 [2022-03-03 19:23:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:10,879 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 2163 transitions. [2022-03-03 19:23:10,879 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 19:23:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2163 transitions. [2022-03-03 19:23:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:10,879 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:10,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:10,895 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 19:23:11,095 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,SelfDestructingSolverStorable299 [2022-03-03 19:23:11,095 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash -361876593, now seen corresponding path program 149 times [2022-03-03 19:23:11,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:11,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575531234] [2022-03-03 19:23:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:11,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:11,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:11,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575531234] [2022-03-03 19:23:11,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575531234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:11,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471741791] [2022-03-03 19:23:11,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:23:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:11,370 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 19:23:11,371 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 19:23:11,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:11,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:11,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:11,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:11,556 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 101 treesize of output 85 [2022-03-03 19:23:12,434 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 152 [2022-03-03 19:23:12,436 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 152 treesize of output 128 [2022-03-03 19:23:13,251 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 19:23:13,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:13,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:13,787 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:23:14,454 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:23:14,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 111 [2022-03-03 19:23:14,458 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 108 treesize of output 88 [2022-03-03 19:23:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:14,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471741791] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:14,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:14,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:23:14,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413153175] [2022-03-03 19:23:14,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:14,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:23:14,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:23:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:23:14,551 INFO L87 Difference]: Start difference. First operand 679 states and 2163 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 19:23:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:18,995 INFO L93 Difference]: Finished difference Result 1353 states and 3933 transitions. [2022-03-03 19:23:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 19:23:18,996 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 19:23:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:18,998 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 19:23:18,998 INFO L226 Difference]: Without dead ends: 1279 [2022-03-03 19:23:18,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=366, Invalid=1614, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:23:18,998 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 313 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:18,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 498 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 19:23:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-03 19:23:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 675. [2022-03-03 19:23:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 3.1943620178041545) internal successors, (2153), 674 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 2153 transitions. [2022-03-03 19:23:19,009 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 2153 transitions. Word has length 20 [2022-03-03 19:23:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:19,009 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 2153 transitions. [2022-03-03 19:23:19,009 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 19:23:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 2153 transitions. [2022-03-03 19:23:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:19,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:19,010 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 19:23:19,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:19,223 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,SelfDestructingSolverStorable300 [2022-03-03 19:23:19,223 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1950681239, now seen corresponding path program 150 times [2022-03-03 19:23:19,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:19,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995160531] [2022-03-03 19:23:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:19,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:19,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995160531] [2022-03-03 19:23:19,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995160531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:19,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202493051] [2022-03-03 19:23:19,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:23:19,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:19,470 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 19:23:19,471 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 19:23:19,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:23:19,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:19,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:19,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:19,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:19,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:23:22,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:22,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 185 treesize of output 161 [2022-03-03 19:23:22,056 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 161 treesize of output 137 [2022-03-03 19:23:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:22,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:23,566 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:23,566 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 127 [2022-03-03 19:23:23,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:23,831 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 113 treesize of output 103 [2022-03-03 19:23:23,835 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:23,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 85 [2022-03-03 19:23:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:23,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202493051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:23,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:23,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:23,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657614887] [2022-03-03 19:23:23,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:23,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:23,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:23,929 INFO L87 Difference]: Start difference. First operand 675 states and 2153 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 19:23:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:24,743 INFO L93 Difference]: Finished difference Result 783 states and 2481 transitions. [2022-03-03 19:23:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:23:24,743 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 19:23:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:24,745 INFO L225 Difference]: With dead ends: 783 [2022-03-03 19:23:24,745 INFO L226 Difference]: Without dead ends: 735 [2022-03-03 19:23:24,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:23:24,745 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:24,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 389 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 655 Invalid, 0 Unknown, 182 Unchecked, 0.3s Time] [2022-03-03 19:23:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-03 19:23:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 678. [2022-03-03 19:23:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 3.194977843426883) internal successors, (2163), 677 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2163 transitions. [2022-03-03 19:23:24,752 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2163 transitions. Word has length 20 [2022-03-03 19:23:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:24,752 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 2163 transitions. [2022-03-03 19:23:24,752 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 19:23:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2163 transitions. [2022-03-03 19:23:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:24,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:24,753 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 19:23:24,769 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 19:23:24,967 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,SelfDestructingSolverStorable301 [2022-03-03 19:23:24,968 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:24,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1630765149, now seen corresponding path program 151 times [2022-03-03 19:23:24,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:24,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318081448] [2022-03-03 19:23:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:24,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:25,175 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 19:23:25,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:25,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318081448] [2022-03-03 19:23:25,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318081448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:25,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526409537] [2022-03-03 19:23:25,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:23:25,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:25,177 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 19:23:25,180 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 19:23:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:25,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:23:25,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:25,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:25,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:23:26,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:26,507 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 117 [2022-03-03 19:23:26,509 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 117 treesize of output 99 [2022-03-03 19:23:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:27,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:27,768 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:27,768 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 144 treesize of output 134 [2022-03-03 19:23:27,997 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:27,997 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:23:28,001 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:28,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:23:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:28,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526409537] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:28,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:28,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:28,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218075200] [2022-03-03 19:23:28,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:28,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:28,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:28,119 INFO L87 Difference]: Start difference. First operand 678 states and 2163 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 19:23:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:28,922 INFO L93 Difference]: Finished difference Result 855 states and 2733 transitions. [2022-03-03 19:23:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:23:28,922 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 19:23:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:28,924 INFO L225 Difference]: With dead ends: 855 [2022-03-03 19:23:28,924 INFO L226 Difference]: Without dead ends: 798 [2022-03-03 19:23:28,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:23:28,924 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:28,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 543 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 877 Invalid, 0 Unknown, 280 Unchecked, 0.3s Time] [2022-03-03 19:23:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-03 19:23:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 679. [2022-03-03 19:23:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.200589970501475) internal successors, (2170), 678 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2170 transitions. [2022-03-03 19:23:28,932 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2170 transitions. Word has length 20 [2022-03-03 19:23:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:28,932 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 2170 transitions. [2022-03-03 19:23:28,932 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 19:23:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2170 transitions. [2022-03-03 19:23:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:28,933 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:28,933 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 19:23:28,950 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 19:23:29,149 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,SelfDestructingSolverStorable302 [2022-03-03 19:23:29,149 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -143180819, now seen corresponding path program 152 times [2022-03-03 19:23:29,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:29,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612344972] [2022-03-03 19:23:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:29,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:29,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612344972] [2022-03-03 19:23:29,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612344972] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:29,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768573136] [2022-03-03 19:23:29,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:23:29,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:29,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:29,413 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 19:23:29,414 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 19:23:29,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:29,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:29,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:29,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:29,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:29,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:23:31,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:31,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 166 treesize of output 146 [2022-03-03 19:23:31,559 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 126 [2022-03-03 19:23:32,054 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 19:23:32,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:32,610 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:32,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 93 [2022-03-03 19:23:33,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:33,179 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 137 treesize of output 127 [2022-03-03 19:23:33,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:33,184 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 119 treesize of output 109 [2022-03-03 19:23:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:33,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768573136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:33,341 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:33,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:33,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262799950] [2022-03-03 19:23:33,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:33,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:33,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:33,342 INFO L87 Difference]: Start difference. First operand 679 states and 2170 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 19:23:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:33,964 INFO L93 Difference]: Finished difference Result 791 states and 2513 transitions. [2022-03-03 19:23:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:23:33,964 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 19:23:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:33,966 INFO L225 Difference]: With dead ends: 791 [2022-03-03 19:23:33,966 INFO L226 Difference]: Without dead ends: 743 [2022-03-03 19:23:33,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:23:33,966 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:33,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 425 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 560 Invalid, 0 Unknown, 548 Unchecked, 0.2s Time] [2022-03-03 19:23:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-03 19:23:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 682. [2022-03-03 19:23:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 3.198237885462555) internal successors, (2178), 681 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2178 transitions. [2022-03-03 19:23:33,973 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2178 transitions. Word has length 20 [2022-03-03 19:23:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 2178 transitions. [2022-03-03 19:23:33,973 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 19:23:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2178 transitions. [2022-03-03 19:23:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:33,974 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:33,974 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 19:23:33,990 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 19:23:34,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:34,189 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:34,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1757238697, now seen corresponding path program 153 times [2022-03-03 19:23:34,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:34,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644937061] [2022-03-03 19:23:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:34,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:34,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644937061] [2022-03-03 19:23:34,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644937061] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:34,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054906894] [2022-03-03 19:23:34,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:23:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:34,386 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 19:23:34,387 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 19:23:34,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:23:34,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:34,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:34,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:34,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:34,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:23:36,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:36,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 162 treesize of output 142 [2022-03-03 19:23:36,190 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 142 treesize of output 122 [2022-03-03 19:23:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:37,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:37,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:37,510 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 119 treesize of output 109 [2022-03-03 19:23:38,060 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:38,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 122 [2022-03-03 19:23:38,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:38,065 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 106 [2022-03-03 19:23:38,229 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 19:23:38,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054906894] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:38,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:38,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:38,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719495466] [2022-03-03 19:23:38,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:38,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:38,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:38,230 INFO L87 Difference]: Start difference. First operand 682 states and 2178 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 19:23:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:39,311 INFO L93 Difference]: Finished difference Result 905 states and 2756 transitions. [2022-03-03 19:23:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:23:39,311 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 19:23:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:39,313 INFO L225 Difference]: With dead ends: 905 [2022-03-03 19:23:39,313 INFO L226 Difference]: Without dead ends: 791 [2022-03-03 19:23:39,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:23:39,313 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 111 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 456 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:39,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 485 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 807 Invalid, 0 Unknown, 456 Unchecked, 0.3s Time] [2022-03-03 19:23:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-03-03 19:23:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 685. [2022-03-03 19:23:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.195906432748538) internal successors, (2186), 684 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2186 transitions. [2022-03-03 19:23:39,321 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2186 transitions. Word has length 20 [2022-03-03 19:23:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:39,321 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 2186 transitions. [2022-03-03 19:23:39,321 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 19:23:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2186 transitions. [2022-03-03 19:23:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:39,322 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:39,322 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 19:23:39,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:39,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:39,537 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2130312615, now seen corresponding path program 154 times [2022-03-03 19:23:39,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:39,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006338282] [2022-03-03 19:23:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:39,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:39,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006338282] [2022-03-03 19:23:39,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006338282] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:39,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764401494] [2022-03-03 19:23:39,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:23:39,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:39,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:39,716 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 19:23:39,717 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 19:23:39,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:23:39,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:39,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:23:39,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:39,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:39,914 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 129 treesize of output 109 [2022-03-03 19:23:40,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:40,456 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 198 treesize of output 172 [2022-03-03 19:23:40,458 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 172 treesize of output 146 [2022-03-03 19:23:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:41,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:41,844 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:41,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 149 [2022-03-03 19:23:42,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:42,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 119 [2022-03-03 19:23:42,128 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:42,128 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 99 [2022-03-03 19:23:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:42,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764401494] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:42,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:42,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:42,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001731811] [2022-03-03 19:23:42,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:42,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:42,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:42,194 INFO L87 Difference]: Start difference. First operand 685 states and 2186 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 19:23:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:43,197 INFO L93 Difference]: Finished difference Result 806 states and 2543 transitions. [2022-03-03 19:23:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:23:43,197 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 19:23:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:43,198 INFO L225 Difference]: With dead ends: 806 [2022-03-03 19:23:43,198 INFO L226 Difference]: Without dead ends: 749 [2022-03-03 19:23:43,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:23:43,199 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 59 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:43,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 371 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 726 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2022-03-03 19:23:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-03-03 19:23:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 685. [2022-03-03 19:23:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.195906432748538) internal successors, (2186), 684 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2186 transitions. [2022-03-03 19:23:43,206 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2186 transitions. Word has length 20 [2022-03-03 19:23:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:43,206 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 2186 transitions. [2022-03-03 19:23:43,206 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 19:23:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2186 transitions. [2022-03-03 19:23:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:43,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:43,207 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 19:23:43,223 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 19:23:43,422 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,SelfDestructingSolverStorable305 [2022-03-03 19:23:43,422 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash 941693091, now seen corresponding path program 155 times [2022-03-03 19:23:43,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:43,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452295527] [2022-03-03 19:23:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:43,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:43,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:43,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452295527] [2022-03-03 19:23:43,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452295527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:43,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596453180] [2022-03-03 19:23:43,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:23:43,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:43,605 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 19:23:43,606 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 19:23:43,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:43,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:43,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:43,724 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 101 treesize of output 85 [2022-03-03 19:23:44,042 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 152 treesize of output 132 [2022-03-03 19:23:44,044 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 112 [2022-03-03 19:23:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:45,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:45,548 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:45,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-03-03 19:23:45,953 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:23:45,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 104 [2022-03-03 19:23:45,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 81 [2022-03-03 19:23:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:45,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596453180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:45,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:45,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:23:45,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251021589] [2022-03-03 19:23:45,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:46,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:23:46,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:23:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:23:46,004 INFO L87 Difference]: Start difference. First operand 685 states and 2186 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 19:23:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:49,985 INFO L93 Difference]: Finished difference Result 1468 states and 4276 transitions. [2022-03-03 19:23:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:23:49,986 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 19:23:49,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:49,988 INFO L225 Difference]: With dead ends: 1468 [2022-03-03 19:23:49,988 INFO L226 Difference]: Without dead ends: 1360 [2022-03-03 19:23:49,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=412, Invalid=1844, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:23:49,988 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 328 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:49,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 623 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 19:23:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2022-03-03 19:23:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 690. [2022-03-03 19:23:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 3.207547169811321) internal successors, (2210), 689 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2210 transitions. [2022-03-03 19:23:49,999 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2210 transitions. Word has length 20 [2022-03-03 19:23:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:49,999 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 2210 transitions. [2022-03-03 19:23:49,999 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 19:23:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2210 transitions. [2022-03-03 19:23:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:50,000 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:50,000 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 19:23:50,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:50,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:50,215 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 893349789, now seen corresponding path program 156 times [2022-03-03 19:23:50,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:50,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957175608] [2022-03-03 19:23:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:50,426 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 19:23:50,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:50,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957175608] [2022-03-03 19:23:50,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957175608] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:50,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877044644] [2022-03-03 19:23:50,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:23:50,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:50,427 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 19:23:50,428 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 19:23:50,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:23:50,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:50,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:50,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:50,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:50,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 104 [2022-03-03 19:23:52,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:52,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 150 treesize of output 130 [2022-03-03 19:23:52,089 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 130 treesize of output 110 [2022-03-03 19:23:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:52,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:52,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:52,664 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 101 treesize of output 93 [2022-03-03 19:23:52,883 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:52,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:23:52,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:52,889 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 86 treesize of output 78 [2022-03-03 19:23:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:52,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877044644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:52,965 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:52,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:52,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033036109] [2022-03-03 19:23:52,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:52,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:52,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:52,966 INFO L87 Difference]: Start difference. First operand 690 states and 2210 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 19:23:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:53,590 INFO L93 Difference]: Finished difference Result 848 states and 2664 transitions. [2022-03-03 19:23:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:23:53,591 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 19:23:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:53,592 INFO L225 Difference]: With dead ends: 848 [2022-03-03 19:23:53,592 INFO L226 Difference]: Without dead ends: 794 [2022-03-03 19:23:53,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:23:53,592 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 65 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:53,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 559 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 708 Invalid, 0 Unknown, 187 Unchecked, 0.2s Time] [2022-03-03 19:23:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-03-03 19:23:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 694. [2022-03-03 19:23:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.2063492063492065) internal successors, (2222), 693 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2222 transitions. [2022-03-03 19:23:53,600 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2222 transitions. Word has length 20 [2022-03-03 19:23:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:53,600 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2222 transitions. [2022-03-03 19:23:53,600 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 19:23:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2222 transitions. [2022-03-03 19:23:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:53,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:53,601 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 19:23:53,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:53,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:53,816 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:53,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1375690333, now seen corresponding path program 157 times [2022-03-03 19:23:53,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:53,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719810718] [2022-03-03 19:23:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:53,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:53,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719810718] [2022-03-03 19:23:53,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719810718] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:53,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73179434] [2022-03-03 19:23:53,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:23:53,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:53,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:53,963 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 19:23:53,963 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 19:23:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:53,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:23:53,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:54,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:54,320 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 96 treesize of output 82 [2022-03-03 19:23:55,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:55,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 139 [2022-03-03 19:23:55,697 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 139 treesize of output 119 [2022-03-03 19:23:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:56,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:56,245 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:56,246 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-03-03 19:23:56,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:56,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:23:56,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:56,485 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:23:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:56,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73179434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:56,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:56,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:23:56,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347187448] [2022-03-03 19:23:56,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:56,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:23:56,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:23:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:23:56,573 INFO L87 Difference]: Start difference. First operand 694 states and 2222 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 19:23:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:57,093 INFO L93 Difference]: Finished difference Result 816 states and 2582 transitions. [2022-03-03 19:23:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:23:57,094 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 19:23:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:57,095 INFO L225 Difference]: With dead ends: 816 [2022-03-03 19:23:57,095 INFO L226 Difference]: Without dead ends: 794 [2022-03-03 19:23:57,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:23:57,096 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 61 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:57,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 437 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 541 Invalid, 0 Unknown, 274 Unchecked, 0.2s Time] [2022-03-03 19:23:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-03-03 19:23:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 695. [2022-03-03 19:23:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 3.2046109510086453) internal successors, (2224), 694 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 2224 transitions. [2022-03-03 19:23:57,114 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 2224 transitions. Word has length 20 [2022-03-03 19:23:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:57,114 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 2224 transitions. [2022-03-03 19:23:57,114 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 19:23:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 2224 transitions. [2022-03-03 19:23:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:23:57,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:57,115 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 19:23:57,130 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 19:23:57,330 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,SelfDestructingSolverStorable308 [2022-03-03 19:23:57,330 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1199816865, now seen corresponding path program 158 times [2022-03-03 19:23:57,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:57,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316806719] [2022-03-03 19:23:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:57,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:57,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:57,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316806719] [2022-03-03 19:23:57,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316806719] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:57,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678467166] [2022-03-03 19:23:57,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:23:57,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:57,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:57,502 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 19:23:57,503 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 19:23:57,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:57,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:57,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:23:57,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:57,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:57,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 104 [2022-03-03 19:23:59,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:23:59,038 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 158 treesize of output 138 [2022-03-03 19:23:59,040 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 138 treesize of output 118 [2022-03-03 19:23:59,388 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 19:23:59,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:59,657 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:59,658 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 103 treesize of output 95 [2022-03-03 19:23:59,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:59,914 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:23:59,919 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:23:59,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:24:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:00,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678467166] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:00,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:00,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:00,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871906314] [2022-03-03 19:24:00,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:00,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:00,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:00,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:00,021 INFO L87 Difference]: Start difference. First operand 695 states and 2224 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 19:24:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:00,789 INFO L93 Difference]: Finished difference Result 872 states and 2763 transitions. [2022-03-03 19:24:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:24:00,790 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 19:24:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:00,791 INFO L225 Difference]: With dead ends: 872 [2022-03-03 19:24:00,791 INFO L226 Difference]: Without dead ends: 824 [2022-03-03 19:24:00,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:24:00,791 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 117 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 534 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:00,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 430 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 517 Invalid, 0 Unknown, 534 Unchecked, 0.2s Time] [2022-03-03 19:24:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-03-03 19:24:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 701. [2022-03-03 19:24:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 3.204285714285714) internal successors, (2243), 700 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2243 transitions. [2022-03-03 19:24:00,799 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2243 transitions. Word has length 20 [2022-03-03 19:24:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:00,799 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 2243 transitions. [2022-03-03 19:24:00,799 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 19:24:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2243 transitions. [2022-03-03 19:24:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:00,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:00,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:00,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:01,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:01,015 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -794648291, now seen corresponding path program 159 times [2022-03-03 19:24:01,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:01,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261776237] [2022-03-03 19:24:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:01,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:01,238 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 19:24:01,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:01,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261776237] [2022-03-03 19:24:01,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261776237] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:01,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295650248] [2022-03-03 19:24:01,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:24:01,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:01,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:01,239 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 19:24:01,240 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 19:24:01,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:24:01,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:01,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:01,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:01,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:01,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-03-03 19:24:02,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:02,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 138 [2022-03-03 19:24:02,970 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 138 treesize of output 118 [2022-03-03 19:24:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:03,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:04,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:04,068 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 93 [2022-03-03 19:24:04,288 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:04,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:24:04,293 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:04,294 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 86 treesize of output 78 [2022-03-03 19:24:04,394 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 19:24:04,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295650248] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:04,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:04,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:04,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44423924] [2022-03-03 19:24:04,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:04,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:04,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:04,395 INFO L87 Difference]: Start difference. First operand 701 states and 2243 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 19:24:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:06,211 INFO L93 Difference]: Finished difference Result 1064 states and 3136 transitions. [2022-03-03 19:24:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 19:24:06,211 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 19:24:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:06,213 INFO L225 Difference]: With dead ends: 1064 [2022-03-03 19:24:06,213 INFO L226 Difference]: Without dead ends: 921 [2022-03-03 19:24:06,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=332, Invalid=2320, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:24:06,213 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 192 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 589 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:06,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 671 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1103 Invalid, 0 Unknown, 589 Unchecked, 0.4s Time] [2022-03-03 19:24:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-03-03 19:24:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 703. [2022-03-03 19:24:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 3.202279202279202) internal successors, (2248), 702 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 2248 transitions. [2022-03-03 19:24:06,222 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 2248 transitions. Word has length 20 [2022-03-03 19:24:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:06,222 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 2248 transitions. [2022-03-03 19:24:06,222 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 19:24:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 2248 transitions. [2022-03-03 19:24:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:06,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:06,223 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 19:24:06,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:06,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2022-03-03 19:24:06,438 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash -43530537, now seen corresponding path program 160 times [2022-03-03 19:24:06,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:06,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226644868] [2022-03-03 19:24:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:06,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:06,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226644868] [2022-03-03 19:24:06,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226644868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:06,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496293876] [2022-03-03 19:24:06,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:24:06,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:06,684 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 19:24:06,685 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 19:24:06,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:24:06,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:06,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:06,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:07,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:07,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 113 treesize of output 97 [2022-03-03 19:24:08,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:08,468 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 145 [2022-03-03 19:24:08,470 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 125 [2022-03-03 19:24:08,821 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 19:24:08,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:09,120 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:09,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:24:09,430 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:09,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:24:09,435 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:09,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:24:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:09,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496293876] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:09,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:09,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:09,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132875265] [2022-03-03 19:24:09,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:09,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:09,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:09,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:09,551 INFO L87 Difference]: Start difference. First operand 703 states and 2248 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 19:24:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:10,018 INFO L93 Difference]: Finished difference Result 815 states and 2567 transitions. [2022-03-03 19:24:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:10,019 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 19:24:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:10,020 INFO L225 Difference]: With dead ends: 815 [2022-03-03 19:24:10,020 INFO L226 Difference]: Without dead ends: 793 [2022-03-03 19:24:10,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:24:10,021 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:10,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 281 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 347 Invalid, 0 Unknown, 110 Unchecked, 0.1s Time] [2022-03-03 19:24:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-03-03 19:24:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 702. [2022-03-03 19:24:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 3.202567760342368) internal successors, (2245), 701 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2245 transitions. [2022-03-03 19:24:10,028 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2245 transitions. Word has length 20 [2022-03-03 19:24:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:10,028 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 2245 transitions. [2022-03-03 19:24:10,028 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 19:24:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2245 transitions. [2022-03-03 19:24:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:10,029 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:10,029 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 19:24:10,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:10,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2022-03-03 19:24:10,240 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1901240915, now seen corresponding path program 161 times [2022-03-03 19:24:10,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:10,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675718485] [2022-03-03 19:24:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:10,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:10,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675718485] [2022-03-03 19:24:10,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675718485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:10,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007413806] [2022-03-03 19:24:10,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:24:10,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:10,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:10,462 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 19:24:10,466 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 19:24:10,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:10,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:10,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:24:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:10,783 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 113 treesize of output 97 [2022-03-03 19:24:11,085 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 150 treesize of output 130 [2022-03-03 19:24:11,086 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 130 treesize of output 110 [2022-03-03 19:24:11,324 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 19:24:11,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:11,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:11,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 110 [2022-03-03 19:24:11,860 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:24:11,860 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 105 treesize of output 90 [2022-03-03 19:24:11,862 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 87 treesize of output 69 [2022-03-03 19:24:11,866 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 19:24:11,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007413806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:11,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:11,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:24:11,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286092715] [2022-03-03 19:24:11,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:11,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:24:11,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:24:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:24:11,866 INFO L87 Difference]: Start difference. First operand 702 states and 2245 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 19:24:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:13,292 INFO L93 Difference]: Finished difference Result 967 states and 2961 transitions. [2022-03-03 19:24:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:24:13,293 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 19:24:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:13,294 INFO L225 Difference]: With dead ends: 967 [2022-03-03 19:24:13,294 INFO L226 Difference]: Without dead ends: 937 [2022-03-03 19:24:13,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=198, Invalid=1284, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 19:24:13,295 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 144 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:13,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 337 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:24:13,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-03-03 19:24:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 705. [2022-03-03 19:24:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 3.200284090909091) internal successors, (2253), 704 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 2253 transitions. [2022-03-03 19:24:13,303 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 2253 transitions. Word has length 20 [2022-03-03 19:24:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 2253 transitions. [2022-03-03 19:24:13,303 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 19:24:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 2253 transitions. [2022-03-03 19:24:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:13,304 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:13,304 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 19:24:13,319 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 19:24:13,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:13,519 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash 399261225, now seen corresponding path program 162 times [2022-03-03 19:24:13,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:13,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831484071] [2022-03-03 19:24:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:13,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:13,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:13,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831484071] [2022-03-03 19:24:13,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831484071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:13,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449975214] [2022-03-03 19:24:13,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:24:13,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:13,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:13,837 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 19:24:13,838 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 19:24:13,862 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:24:13,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:13,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:13,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:14,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:14,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 96 treesize of output 82 [2022-03-03 19:24:14,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:14,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 166 treesize of output 144 [2022-03-03 19:24:14,882 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 122 [2022-03-03 19:24:16,019 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 19:24:16,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:16,254 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:16,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:24:16,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:16,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:24:16,567 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:16,567 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 86 treesize of output 78 [2022-03-03 19:24:16,668 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 19:24:16,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449975214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:16,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:16,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:16,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501673292] [2022-03-03 19:24:16,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:16,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:16,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:16,669 INFO L87 Difference]: Start difference. First operand 705 states and 2253 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 19:24:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:18,204 INFO L93 Difference]: Finished difference Result 967 states and 2925 transitions. [2022-03-03 19:24:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:24:18,204 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 19:24:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:18,206 INFO L225 Difference]: With dead ends: 967 [2022-03-03 19:24:18,206 INFO L226 Difference]: Without dead ends: 853 [2022-03-03 19:24:18,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:24:18,206 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 194 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:18,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 470 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 766 Invalid, 0 Unknown, 474 Unchecked, 0.3s Time] [2022-03-03 19:24:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-03-03 19:24:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 709. [2022-03-03 19:24:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 3.2005649717514126) internal successors, (2266), 708 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 19:24:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 2266 transitions. [2022-03-03 19:24:18,214 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 2266 transitions. Word has length 20 [2022-03-03 19:24:18,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:18,214 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 2266 transitions. [2022-03-03 19:24:18,214 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 19:24:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 2266 transitions. [2022-03-03 19:24:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:18,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:18,215 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 19:24:18,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:18,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313,193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:18,421 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1749535311, now seen corresponding path program 163 times [2022-03-03 19:24:18,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:18,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915154203] [2022-03-03 19:24:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:18,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:18,629 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 19:24:18,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:18,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915154203] [2022-03-03 19:24:18,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915154203] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:18,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756644471] [2022-03-03 19:24:18,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:24:18,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:18,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:18,631 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 19:24:18,632 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 19:24:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:18,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:19,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:19,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 117 treesize of output 101 [2022-03-03 19:24:19,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:19,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 191 treesize of output 167 [2022-03-03 19:24:19,721 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 19:24:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:20,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:20,781 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:20,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:24:21,141 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:21,141 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 113 treesize of output 105 [2022-03-03 19:24:21,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:21,146 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-03-03 19:24:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:21,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756644471] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:21,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:21,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:21,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952867673] [2022-03-03 19:24:21,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:21,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:21,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:21,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:21,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:21,240 INFO L87 Difference]: Start difference. First operand 709 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 19:24:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:22,435 INFO L93 Difference]: Finished difference Result 995 states and 3060 transitions. [2022-03-03 19:24:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 19:24:22,435 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 19:24:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:22,437 INFO L225 Difference]: With dead ends: 995 [2022-03-03 19:24:22,437 INFO L226 Difference]: Without dead ends: 902 [2022-03-03 19:24:22,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:24:22,437 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 140 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:22,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 537 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 713 Invalid, 0 Unknown, 290 Unchecked, 0.3s Time] [2022-03-03 19:24:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-03-03 19:24:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 717. [2022-03-03 19:24:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 3.202513966480447) internal successors, (2293), 716 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2293 transitions. [2022-03-03 19:24:22,445 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2293 transitions. Word has length 20 [2022-03-03 19:24:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:22,445 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 2293 transitions. [2022-03-03 19:24:22,445 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 19:24:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2293 transitions. [2022-03-03 19:24:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:22,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:22,446 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 19:24:22,464 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 19:24:22,659 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,SelfDestructingSolverStorable314 [2022-03-03 19:24:22,659 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:22,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1155483957, now seen corresponding path program 164 times [2022-03-03 19:24:22,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:22,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329368652] [2022-03-03 19:24:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:22,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:22,818 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 19:24:22,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:22,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329368652] [2022-03-03 19:24:22,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329368652] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:22,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438076559] [2022-03-03 19:24:22,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:24:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:22,819 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 19:24:22,820 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 19:24:22,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:22,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:22,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:22,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:23,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:23,530 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-03-03 19:24:24,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:24,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 154 [2022-03-03 19:24:24,209 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 134 [2022-03-03 19:24:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:24,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:24,761 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:24,761 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 90 treesize of output 84 [2022-03-03 19:24:25,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:25,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:24:25,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:25,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:24:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:25,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438076559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:25,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:25,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:25,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411794304] [2022-03-03 19:24:25,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:25,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:25,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:25,108 INFO L87 Difference]: Start difference. First operand 717 states and 2293 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 19:24:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:25,613 INFO L93 Difference]: Finished difference Result 823 states and 2592 transitions. [2022-03-03 19:24:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:25,613 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 19:24:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:25,614 INFO L225 Difference]: With dead ends: 823 [2022-03-03 19:24:25,614 INFO L226 Difference]: Without dead ends: 779 [2022-03-03 19:24:25,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:24:25,615 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:25,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 286 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 370 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2022-03-03 19:24:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-03-03 19:24:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 720. [2022-03-03 19:24:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 3.196105702364395) internal successors, (2298), 719 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2298 transitions. [2022-03-03 19:24:25,622 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2298 transitions. Word has length 20 [2022-03-03 19:24:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:25,623 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 2298 transitions. [2022-03-03 19:24:25,623 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 19:24:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2298 transitions. [2022-03-03 19:24:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:25,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:25,624 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 19:24:25,640 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 19:24:25,839 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,SelfDestructingSolverStorable315 [2022-03-03 19:24:25,839 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -182553335, now seen corresponding path program 165 times [2022-03-03 19:24:25,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:25,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927648373] [2022-03-03 19:24:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:25,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:25,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:25,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927648373] [2022-03-03 19:24:25,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927648373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:25,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051211911] [2022-03-03 19:24:25,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:24:25,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:25,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:25,993 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 19:24:25,994 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 19:24:26,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:24:26,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:26,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:26,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:26,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:26,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:24:27,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:27,421 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 147 [2022-03-03 19:24:27,423 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 147 treesize of output 129 [2022-03-03 19:24:27,817 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 19:24:27,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:28,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:28,021 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 90 treesize of output 84 [2022-03-03 19:24:28,272 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:28,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:24:28,277 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:28,277 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 86 treesize of output 78 [2022-03-03 19:24:28,364 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 19:24:28,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051211911] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:28,364 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:28,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:28,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606455476] [2022-03-03 19:24:28,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:28,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:28,365 INFO L87 Difference]: Start difference. First operand 720 states and 2298 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 19:24:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:28,882 INFO L93 Difference]: Finished difference Result 848 states and 2649 transitions. [2022-03-03 19:24:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:24:28,882 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 19:24:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:28,884 INFO L225 Difference]: With dead ends: 848 [2022-03-03 19:24:28,884 INFO L226 Difference]: Without dead ends: 799 [2022-03-03 19:24:28,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:24:28,884 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 95 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:28,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 383 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 536 Invalid, 0 Unknown, 341 Unchecked, 0.2s Time] [2022-03-03 19:24:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-03 19:24:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 716. [2022-03-03 19:24:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 3.202797202797203) internal successors, (2290), 715 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 2290 transitions. [2022-03-03 19:24:28,892 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 2290 transitions. Word has length 20 [2022-03-03 19:24:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:28,892 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 2290 transitions. [2022-03-03 19:24:28,892 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 19:24:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 2290 transitions. [2022-03-03 19:24:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:28,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:28,893 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 19:24:28,909 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 19:24:29,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2022-03-03 19:24:29,109 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1573521127, now seen corresponding path program 166 times [2022-03-03 19:24:29,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:29,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823581928] [2022-03-03 19:24:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:29,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:29,323 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 19:24:29,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:29,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823581928] [2022-03-03 19:24:29,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823581928] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:29,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139462185] [2022-03-03 19:24:29,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:24:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:29,325 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 19:24:29,325 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 19:24:29,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:24:29,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:29,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:29,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:29,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:29,819 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-03-03 19:24:30,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:30,142 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 151 [2022-03-03 19:24:30,144 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 151 treesize of output 129 [2022-03-03 19:24:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:30,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:30,960 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:30,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:24:31,340 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:31,340 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 118 treesize of output 108 [2022-03-03 19:24:31,344 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:31,344 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 100 treesize of output 90 [2022-03-03 19:24:31,428 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 19:24:31,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139462185] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:31,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:31,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:31,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171819711] [2022-03-03 19:24:31,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:31,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:31,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:31,429 INFO L87 Difference]: Start difference. First operand 716 states and 2290 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 19:24:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:32,639 INFO L93 Difference]: Finished difference Result 891 states and 2732 transitions. [2022-03-03 19:24:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:24:32,639 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 19:24:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:32,641 INFO L225 Difference]: With dead ends: 891 [2022-03-03 19:24:32,641 INFO L226 Difference]: Without dead ends: 841 [2022-03-03 19:24:32,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:24:32,641 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 120 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:32,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 514 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 763 Invalid, 0 Unknown, 253 Unchecked, 0.3s Time] [2022-03-03 19:24:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-03-03 19:24:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 717. [2022-03-03 19:24:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 3.201117318435754) internal successors, (2292), 716 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2292 transitions. [2022-03-03 19:24:32,650 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2292 transitions. Word has length 20 [2022-03-03 19:24:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:32,650 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 2292 transitions. [2022-03-03 19:24:32,650 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 19:24:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2292 transitions. [2022-03-03 19:24:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:32,651 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:32,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:32,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:32,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:32,867 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -575275409, now seen corresponding path program 167 times [2022-03-03 19:24:32,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:32,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357405638] [2022-03-03 19:24:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:33,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:33,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357405638] [2022-03-03 19:24:33,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357405638] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:33,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289223884] [2022-03-03 19:24:33,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:24:33,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:33,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:33,070 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 19:24:33,072 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 19:24:33,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:24:33,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:33,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:33,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:33,337 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 93 treesize of output 79 [2022-03-03 19:24:33,466 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 159 treesize of output 139 [2022-03-03 19:24:33,468 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 139 treesize of output 119 [2022-03-03 19:24:34,080 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 19:24:34,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:34,405 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:34,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 116 [2022-03-03 19:24:34,706 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:24:34,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 88 [2022-03-03 19:24:34,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-03-03 19:24:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:34,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289223884] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:34,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:34,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:24:34,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339833903] [2022-03-03 19:24:34,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:34,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:24:34,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:34,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:24:34,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:24:34,736 INFO L87 Difference]: Start difference. First operand 717 states and 2292 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 19:24:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:35,723 INFO L93 Difference]: Finished difference Result 970 states and 2984 transitions. [2022-03-03 19:24:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:24:35,723 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 19:24:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:35,725 INFO L225 Difference]: With dead ends: 970 [2022-03-03 19:24:35,725 INFO L226 Difference]: Without dead ends: 949 [2022-03-03 19:24:35,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:24:35,725 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 122 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:35,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 290 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:24:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-03-03 19:24:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 717. [2022-03-03 19:24:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 3.201117318435754) internal successors, (2292), 716 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2292 transitions. [2022-03-03 19:24:35,734 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2292 transitions. Word has length 20 [2022-03-03 19:24:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:35,734 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 2292 transitions. [2022-03-03 19:24:35,734 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 19:24:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2292 transitions. [2022-03-03 19:24:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:35,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:35,735 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 19:24:35,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:35,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318,198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:35,951 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash -465591913, now seen corresponding path program 168 times [2022-03-03 19:24:35,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:35,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102581994] [2022-03-03 19:24:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:36,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:36,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102581994] [2022-03-03 19:24:36,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102581994] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:36,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323890992] [2022-03-03 19:24:36,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:24:36,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:36,104 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 19:24:36,104 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 19:24:36,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:24:36,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:36,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:36,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:36,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:36,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:24:38,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:38,123 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 160 [2022-03-03 19:24:38,124 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 138 [2022-03-03 19:24:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:38,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:39,028 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:39,028 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 149 treesize of output 137 [2022-03-03 19:24:39,384 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:39,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:24:39,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:39,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 95 [2022-03-03 19:24:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:39,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323890992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:39,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:39,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:39,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695982792] [2022-03-03 19:24:39,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:39,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:39,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:39,498 INFO L87 Difference]: Start difference. First operand 717 states and 2292 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 19:24:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:40,303 INFO L93 Difference]: Finished difference Result 803 states and 2566 transitions. [2022-03-03 19:24:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:24:40,304 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 19:24:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:40,305 INFO L225 Difference]: With dead ends: 803 [2022-03-03 19:24:40,305 INFO L226 Difference]: Without dead ends: 788 [2022-03-03 19:24:40,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:24:40,305 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:40,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 326 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 584 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2022-03-03 19:24:40,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-03-03 19:24:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 721. [2022-03-03 19:24:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.2055555555555557) internal successors, (2308), 720 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2308 transitions. [2022-03-03 19:24:40,313 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2308 transitions. Word has length 20 [2022-03-03 19:24:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:40,313 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 2308 transitions. [2022-03-03 19:24:40,313 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 19:24:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2308 transitions. [2022-03-03 19:24:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:40,314 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:40,314 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 19:24:40,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:40,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:40,527 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash -145675823, now seen corresponding path program 169 times [2022-03-03 19:24:40,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:40,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787111485] [2022-03-03 19:24:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:40,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:40,668 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 19:24:40,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:40,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787111485] [2022-03-03 19:24:40,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787111485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:40,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705780780] [2022-03-03 19:24:40,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:24:40,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:40,670 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 19:24:40,671 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 19:24:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:40,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:40,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:40,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:40,997 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 109 treesize of output 91 [2022-03-03 19:24:41,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:41,648 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 125 [2022-03-03 19:24:41,650 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 125 treesize of output 105 [2022-03-03 19:24:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:42,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:42,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:42,785 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 151 treesize of output 139 [2022-03-03 19:24:43,324 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:43,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 111 [2022-03-03 19:24:43,329 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:43,329 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 103 treesize of output 93 [2022-03-03 19:24:43,451 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 19:24:43,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705780780] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:43,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:43,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:43,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084578264] [2022-03-03 19:24:43,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:43,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:43,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:43,452 INFO L87 Difference]: Start difference. First operand 721 states and 2308 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 19:24:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:44,189 INFO L93 Difference]: Finished difference Result 827 states and 2626 transitions. [2022-03-03 19:24:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:24:44,189 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 19:24:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:44,191 INFO L225 Difference]: With dead ends: 827 [2022-03-03 19:24:44,191 INFO L226 Difference]: Without dead ends: 812 [2022-03-03 19:24:44,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:24:44,191 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:44,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 344 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 638 Invalid, 0 Unknown, 60 Unchecked, 0.3s Time] [2022-03-03 19:24:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-03 19:24:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 721. [2022-03-03 19:24:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.2055555555555557) internal successors, (2308), 720 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2308 transitions. [2022-03-03 19:24:44,199 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2308 transitions. Word has length 20 [2022-03-03 19:24:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:44,199 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 2308 transitions. [2022-03-03 19:24:44,200 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 19:24:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2308 transitions. [2022-03-03 19:24:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:44,200 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:44,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:44,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:44,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable320 [2022-03-03 19:24:44,403 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1839274997, now seen corresponding path program 170 times [2022-03-03 19:24:44,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:44,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345137303] [2022-03-03 19:24:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:44,793 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 19:24:44,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:44,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345137303] [2022-03-03 19:24:44,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345137303] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:44,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798637251] [2022-03-03 19:24:44,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:24:44,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:44,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:44,795 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 19:24:44,795 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 19:24:44,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:44,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:44,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:44,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:45,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:45,295 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 129 treesize of output 109 [2022-03-03 19:24:47,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:47,337 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 199 treesize of output 177 [2022-03-03 19:24:47,340 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 155 [2022-03-03 19:24:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:48,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:48,674 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:48,674 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:24:49,090 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:49,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:24:49,097 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:49,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:24:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:49,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798637251] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:49,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:49,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:49,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847377906] [2022-03-03 19:24:49,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:49,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:49,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:49,271 INFO L87 Difference]: Start difference. First operand 721 states and 2308 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 19:24:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:50,054 INFO L93 Difference]: Finished difference Result 814 states and 2607 transitions. [2022-03-03 19:24:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:24:50,054 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 19:24:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:50,056 INFO L225 Difference]: With dead ends: 814 [2022-03-03 19:24:50,056 INFO L226 Difference]: Without dead ends: 799 [2022-03-03 19:24:50,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:24:50,056 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:50,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 264 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 461 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-03-03 19:24:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-03 19:24:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 719. [2022-03-03 19:24:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 3.2047353760445683) internal successors, (2301), 718 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 2301 transitions. [2022-03-03 19:24:50,064 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 2301 transitions. Word has length 20 [2022-03-03 19:24:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:50,064 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 2301 transitions. [2022-03-03 19:24:50,064 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 19:24:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 2301 transitions. [2022-03-03 19:24:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:50,065 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:50,065 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 19:24:50,083 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 19:24:50,265 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,SelfDestructingSolverStorable321 [2022-03-03 19:24:50,265 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1341908507, now seen corresponding path program 171 times [2022-03-03 19:24:50,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:50,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356761763] [2022-03-03 19:24:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:50,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:50,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:50,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356761763] [2022-03-03 19:24:50,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356761763] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:50,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832174673] [2022-03-03 19:24:50,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:24:50,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:50,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:50,489 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 19:24:50,490 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 19:24:50,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:24:50,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:50,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:50,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:50,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:50,959 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-03-03 19:24:52,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:52,703 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 153 treesize of output 135 [2022-03-03 19:24:52,705 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 117 [2022-03-03 19:24:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:53,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:53,666 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:53,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 104 [2022-03-03 19:24:54,186 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:54,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 136 [2022-03-03 19:24:54,192 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:54,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 114 [2022-03-03 19:24:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:54,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832174673] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:54,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:54,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:54,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937074021] [2022-03-03 19:24:54,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:54,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:54,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:54,344 INFO L87 Difference]: Start difference. First operand 719 states and 2301 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 19:24:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:54,844 INFO L93 Difference]: Finished difference Result 801 states and 2559 transitions. [2022-03-03 19:24:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:24:54,844 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 19:24:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:54,846 INFO L225 Difference]: With dead ends: 801 [2022-03-03 19:24:54,846 INFO L226 Difference]: Without dead ends: 786 [2022-03-03 19:24:54,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:24:54,846 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:54,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 225 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 164 Unchecked, 0.1s Time] [2022-03-03 19:24:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-03-03 19:24:54,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 721. [2022-03-03 19:24:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.2069444444444444) internal successors, (2309), 720 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2309 transitions. [2022-03-03 19:24:54,854 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2309 transitions. Word has length 20 [2022-03-03 19:24:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:54,854 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 2309 transitions. [2022-03-03 19:24:54,854 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 19:24:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2309 transitions. [2022-03-03 19:24:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:54,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:54,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:54,871 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 19:24:55,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2022-03-03 19:24:55,071 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 941825883, now seen corresponding path program 172 times [2022-03-03 19:24:55,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:55,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340741267] [2022-03-03 19:24:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:55,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:55,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:55,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340741267] [2022-03-03 19:24:55,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340741267] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:55,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840012481] [2022-03-03 19:24:55,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:24:55,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:55,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:55,253 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 19:24:55,254 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 19:24:55,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:24:55,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:55,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:24:55,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:55,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:55,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:24:57,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:24:57,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 171 treesize of output 149 [2022-03-03 19:24:57,219 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 127 [2022-03-03 19:24:57,537 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 19:24:57,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:57,947 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:57,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:24:58,405 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:58,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:24:58,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:24:58,412 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 97 treesize of output 89 [2022-03-03 19:24:58,564 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 19:24:58,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840012481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:58,564 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:58,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:24:58,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458813587] [2022-03-03 19:24:58,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:58,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:24:58,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:24:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:24:58,565 INFO L87 Difference]: Start difference. First operand 721 states and 2309 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 19:24:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:59,213 INFO L93 Difference]: Finished difference Result 820 states and 2591 transitions. [2022-03-03 19:24:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:24:59,213 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 19:24:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:59,215 INFO L225 Difference]: With dead ends: 820 [2022-03-03 19:24:59,215 INFO L226 Difference]: Without dead ends: 782 [2022-03-03 19:24:59,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:24:59,215 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:59,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 354 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 566 Invalid, 0 Unknown, 197 Unchecked, 0.2s Time] [2022-03-03 19:24:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-03-03 19:24:59,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 725. [2022-03-03 19:24:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 3.197513812154696) internal successors, (2315), 724 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 2315 transitions. [2022-03-03 19:24:59,223 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 2315 transitions. Word has length 20 [2022-03-03 19:24:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:59,223 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 2315 transitions. [2022-03-03 19:24:59,223 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 19:24:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 2315 transitions. [2022-03-03 19:24:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:24:59,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:59,224 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 19:24:59,239 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 19:24:59,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2022-03-03 19:24:59,439 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1052639273, now seen corresponding path program 173 times [2022-03-03 19:24:59,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:59,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974212609] [2022-03-03 19:24:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:59,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:59,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:59,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974212609] [2022-03-03 19:24:59,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974212609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:59,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925171178] [2022-03-03 19:24:59,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:24:59,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:59,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:59,661 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 19:24:59,662 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 19:24:59,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:24:59,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:59,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:24:59,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:59,865 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 101 treesize of output 85 [2022-03-03 19:25:00,541 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 171 treesize of output 147 [2022-03-03 19:25:00,543 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 147 treesize of output 123 [2022-03-03 19:25:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:01,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:01,836 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:01,836 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 122 treesize of output 112 [2022-03-03 19:25:02,578 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:25:02,579 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 108 [2022-03-03 19:25:02,581 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 105 treesize of output 87 [2022-03-03 19:25:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:02,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925171178] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:02,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:02,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:25:02,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108278238] [2022-03-03 19:25:02,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:02,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:25:02,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:25:02,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:25:02,624 INFO L87 Difference]: Start difference. First operand 725 states and 2315 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 19:25:03,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:03,818 INFO L93 Difference]: Finished difference Result 988 states and 3035 transitions. [2022-03-03 19:25:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:25:03,819 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 19:25:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:03,820 INFO L225 Difference]: With dead ends: 988 [2022-03-03 19:25:03,820 INFO L226 Difference]: Without dead ends: 973 [2022-03-03 19:25:03,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:25:03,821 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 141 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:03,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 239 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:25:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-03-03 19:25:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 730. [2022-03-03 19:25:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 3.2002743484224965) internal successors, (2333), 729 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 2333 transitions. [2022-03-03 19:25:03,830 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 2333 transitions. Word has length 20 [2022-03-03 19:25:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:03,830 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 2333 transitions. [2022-03-03 19:25:03,830 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 19:25:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 2333 transitions. [2022-03-03 19:25:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:03,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:03,831 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 19:25:03,847 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 19:25:04,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2022-03-03 19:25:04,047 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1030042725, now seen corresponding path program 174 times [2022-03-03 19:25:04,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:04,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927198646] [2022-03-03 19:25:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:04,287 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 19:25:04,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:04,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927198646] [2022-03-03 19:25:04,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927198646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:04,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721613770] [2022-03-03 19:25:04,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:25:04,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:04,288 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 19:25:04,289 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 19:25:04,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:25:04,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:04,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:25:04,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:04,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:04,733 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 109 treesize of output 91 [2022-03-03 19:25:05,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:05,661 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 149 [2022-03-03 19:25:05,663 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 129 [2022-03-03 19:25:06,297 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 19:25:06,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:06,662 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:06,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:25:07,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:07,167 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 133 treesize of output 121 [2022-03-03 19:25:07,172 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:07,172 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 113 treesize of output 101 [2022-03-03 19:25:07,335 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 19:25:07,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721613770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:07,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:07,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:07,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312224795] [2022-03-03 19:25:07,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:07,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:07,336 INFO L87 Difference]: Start difference. First operand 730 states and 2333 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 19:25:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:08,802 INFO L93 Difference]: Finished difference Result 982 states and 3047 transitions. [2022-03-03 19:25:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 19:25:08,802 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 19:25:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:08,803 INFO L225 Difference]: With dead ends: 982 [2022-03-03 19:25:08,803 INFO L226 Difference]: Without dead ends: 923 [2022-03-03 19:25:08,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=1601, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:25:08,804 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 147 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:08,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 509 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 595 Invalid, 0 Unknown, 370 Unchecked, 0.2s Time] [2022-03-03 19:25:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-03-03 19:25:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 735. [2022-03-03 19:25:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 3.2111716621253406) internal successors, (2357), 734 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2357 transitions. [2022-03-03 19:25:08,812 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2357 transitions. Word has length 20 [2022-03-03 19:25:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:08,812 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 2357 transitions. [2022-03-03 19:25:08,813 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 19:25:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2357 transitions. [2022-03-03 19:25:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:08,813 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:08,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:08,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:09,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable325 [2022-03-03 19:25:09,029 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -679565355, now seen corresponding path program 175 times [2022-03-03 19:25:09,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:09,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059069622] [2022-03-03 19:25:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:09,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:09,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059069622] [2022-03-03 19:25:09,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059069622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:09,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950086515] [2022-03-03 19:25:09,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:25:09,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:09,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:09,238 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 19:25:09,241 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 19:25:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:09,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:09,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:09,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:09,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:25:09,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:09,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 154 treesize of output 134 [2022-03-03 19:25:09,854 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 114 [2022-03-03 19:25:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:10,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:11,563 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:11,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 134 [2022-03-03 19:25:11,945 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:11,945 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 114 treesize of output 106 [2022-03-03 19:25:11,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:11,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 90 [2022-03-03 19:25:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:12,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950086515] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:12,061 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:12,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:12,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001894759] [2022-03-03 19:25:12,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:12,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:12,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:12,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:12,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:12,062 INFO L87 Difference]: Start difference. First operand 735 states and 2357 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 19:25:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:12,752 INFO L93 Difference]: Finished difference Result 821 states and 2639 transitions. [2022-03-03 19:25:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:25:12,752 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 19:25:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:12,754 INFO L225 Difference]: With dead ends: 821 [2022-03-03 19:25:12,754 INFO L226 Difference]: Without dead ends: 806 [2022-03-03 19:25:12,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:25:12,754 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:12,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 195 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 342 Unchecked, 0.1s Time] [2022-03-03 19:25:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-03-03 19:25:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 736. [2022-03-03 19:25:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.214965986394558) internal successors, (2363), 735 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2363 transitions. [2022-03-03 19:25:12,762 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2363 transitions. Word has length 20 [2022-03-03 19:25:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:12,762 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 2363 transitions. [2022-03-03 19:25:12,762 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 19:25:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2363 transitions. [2022-03-03 19:25:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:12,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:12,763 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 19:25:12,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:12,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:12,979 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:12,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:12,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1305385465, now seen corresponding path program 176 times [2022-03-03 19:25:12,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:12,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800195130] [2022-03-03 19:25:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:12,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:13,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:13,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800195130] [2022-03-03 19:25:13,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800195130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:13,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133281626] [2022-03-03 19:25:13,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:25:13,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:13,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:13,139 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 19:25:13,140 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 19:25:13,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:25:13,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:13,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:13,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:13,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:13,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:25:13,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:13,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 175 treesize of output 153 [2022-03-03 19:25:13,964 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 153 treesize of output 131 [2022-03-03 19:25:15,226 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 19:25:15,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:15,673 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:15,674 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 115 [2022-03-03 19:25:15,970 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:15,970 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:25:15,975 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:15,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:25:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:16,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133281626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:16,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:16,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:16,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244035788] [2022-03-03 19:25:16,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:16,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:16,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:16,072 INFO L87 Difference]: Start difference. First operand 736 states and 2363 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 19:25:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:16,969 INFO L93 Difference]: Finished difference Result 842 states and 2682 transitions. [2022-03-03 19:25:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:25:16,969 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 19:25:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:16,970 INFO L225 Difference]: With dead ends: 842 [2022-03-03 19:25:16,970 INFO L226 Difference]: Without dead ends: 812 [2022-03-03 19:25:16,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:16,971 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:16,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 288 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 534 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-03-03 19:25:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-03 19:25:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 737. [2022-03-03 19:25:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 3.21875) internal successors, (2369), 736 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 2369 transitions. [2022-03-03 19:25:16,979 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 2369 transitions. Word has length 20 [2022-03-03 19:25:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:16,979 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 2369 transitions. [2022-03-03 19:25:16,979 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 19:25:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 2369 transitions. [2022-03-03 19:25:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:16,980 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:16,980 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 19:25:16,998 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 19:25:17,196 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,SelfDestructingSolverStorable327 [2022-03-03 19:25:17,196 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:17,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1868184879, now seen corresponding path program 177 times [2022-03-03 19:25:17,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:17,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019193812] [2022-03-03 19:25:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:17,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:17,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019193812] [2022-03-03 19:25:17,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019193812] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:17,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864582160] [2022-03-03 19:25:17,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:25:17,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:17,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:17,349 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 19:25:17,350 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 19:25:17,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:25:17,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:17,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:25:17,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:17,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:17,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 109 treesize of output 91 [2022-03-03 19:25:18,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:18,146 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 160 treesize of output 138 [2022-03-03 19:25:18,149 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 138 treesize of output 116 [2022-03-03 19:25:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:19,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:19,981 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:19,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:25:20,488 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:20,488 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 147 [2022-03-03 19:25:20,493 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:20,493 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 139 treesize of output 123 [2022-03-03 19:25:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:20,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864582160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:20,621 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:20,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:20,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719714775] [2022-03-03 19:25:20,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:20,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:20,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:20,622 INFO L87 Difference]: Start difference. First operand 737 states and 2369 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 19:25:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:21,319 INFO L93 Difference]: Finished difference Result 862 states and 2747 transitions. [2022-03-03 19:25:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 19:25:21,319 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 19:25:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:21,321 INFO L225 Difference]: With dead ends: 862 [2022-03-03 19:25:21,321 INFO L226 Difference]: Without dead ends: 847 [2022-03-03 19:25:21,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:25:21,321 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 84 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:21,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 241 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 511 Invalid, 0 Unknown, 208 Unchecked, 0.2s Time] [2022-03-03 19:25:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-03-03 19:25:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 736. [2022-03-03 19:25:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.214965986394558) internal successors, (2363), 735 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2363 transitions. [2022-03-03 19:25:21,330 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2363 transitions. Word has length 20 [2022-03-03 19:25:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:21,330 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 2363 transitions. [2022-03-03 19:25:21,330 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 19:25:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2363 transitions. [2022-03-03 19:25:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:21,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:21,331 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 19:25:21,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:21,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328,208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:21,545 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:21,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1466641749, now seen corresponding path program 178 times [2022-03-03 19:25:21,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:21,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073987139] [2022-03-03 19:25:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:21,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:21,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:21,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073987139] [2022-03-03 19:25:21,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073987139] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:21,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383164836] [2022-03-03 19:25:21,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:25:21,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:21,704 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 19:25:21,705 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 19:25:21,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:25:21,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:21,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:25:21,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:22,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:22,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 101 treesize of output 85 [2022-03-03 19:25:22,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:22,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 176 treesize of output 154 [2022-03-03 19:25:22,651 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 154 treesize of output 132 [2022-03-03 19:25:23,832 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 19:25:23,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:24,193 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:24,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:25:24,868 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:24,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 122 [2022-03-03 19:25:24,873 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:24,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 106 [2022-03-03 19:25:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:25,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383164836] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:25,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:25,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:25,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371058390] [2022-03-03 19:25:25,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:25,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:25,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:25,058 INFO L87 Difference]: Start difference. First operand 736 states and 2363 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 19:25:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:25,855 INFO L93 Difference]: Finished difference Result 963 states and 3048 transitions. [2022-03-03 19:25:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 19:25:25,855 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 19:25:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:25,857 INFO L225 Difference]: With dead ends: 963 [2022-03-03 19:25:25,857 INFO L226 Difference]: Without dead ends: 919 [2022-03-03 19:25:25,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:25:25,857 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:25,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 289 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 473 Invalid, 0 Unknown, 193 Unchecked, 0.2s Time] [2022-03-03 19:25:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-03 19:25:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 740. [2022-03-03 19:25:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 3.223274695534506) internal successors, (2382), 739 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2382 transitions. [2022-03-03 19:25:25,866 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2382 transitions. Word has length 20 [2022-03-03 19:25:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:25,866 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2382 transitions. [2022-03-03 19:25:25,866 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 19:25:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2382 transitions. [2022-03-03 19:25:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:25,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:25,867 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 19:25:25,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Ended with exit code 0 [2022-03-03 19:25:26,082 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,SelfDestructingSolverStorable329 [2022-03-03 19:25:26,082 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1516412217, now seen corresponding path program 179 times [2022-03-03 19:25:26,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:26,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956806467] [2022-03-03 19:25:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:26,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:26,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956806467] [2022-03-03 19:25:26,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956806467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:26,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006218601] [2022-03-03 19:25:26,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:25:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:26,311 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 19:25:26,312 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 19:25:26,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:25:26,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:26,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:25:26,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:26,479 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 109 treesize of output 91 [2022-03-03 19:25:26,616 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 129 [2022-03-03 19:25:26,617 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 19:25:27,428 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 19:25:27,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:27,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:27,935 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 134 [2022-03-03 19:25:28,172 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:25:28,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 99 [2022-03-03 19:25:28,174 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 96 treesize of output 78 [2022-03-03 19:25:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:28,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006218601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:28,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:28,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:25:28,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558647068] [2022-03-03 19:25:28,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:28,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:25:28,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:25:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:25:28,204 INFO L87 Difference]: Start difference. First operand 740 states and 2382 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 19:25:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:31,210 INFO L93 Difference]: Finished difference Result 1214 states and 3651 transitions. [2022-03-03 19:25:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:25:31,210 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 19:25:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:31,212 INFO L225 Difference]: With dead ends: 1214 [2022-03-03 19:25:31,212 INFO L226 Difference]: Without dead ends: 1104 [2022-03-03 19:25:31,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:25:31,212 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 182 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:31,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 351 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:25:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-03-03 19:25:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 736. [2022-03-03 19:25:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.216326530612245) internal successors, (2364), 735 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2364 transitions. [2022-03-03 19:25:31,222 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2364 transitions. Word has length 20 [2022-03-03 19:25:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:31,222 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 2364 transitions. [2022-03-03 19:25:31,222 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 19:25:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2364 transitions. [2022-03-03 19:25:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:31,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:31,223 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 19:25:31,238 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 19:25:31,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330,210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:31,438 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1271798471, now seen corresponding path program 180 times [2022-03-03 19:25:31,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:31,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802679002] [2022-03-03 19:25:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:31,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:31,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802679002] [2022-03-03 19:25:31,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802679002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:31,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897415993] [2022-03-03 19:25:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:25:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:31,640 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 19:25:31,640 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 19:25:31,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:25:31,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:31,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:25:31,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:32,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:32,214 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-03-03 19:25:34,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:34,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 141 [2022-03-03 19:25:34,178 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 123 [2022-03-03 19:25:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:34,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:34,879 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:34,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:25:35,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:35,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 105 [2022-03-03 19:25:35,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:35,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 87 [2022-03-03 19:25:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:35,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897415993] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:35,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:35,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:35,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106332237] [2022-03-03 19:25:35,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:35,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:35,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:35,265 INFO L87 Difference]: Start difference. First operand 736 states and 2364 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 19:25:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:35,883 INFO L93 Difference]: Finished difference Result 820 states and 2628 transitions. [2022-03-03 19:25:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:25:35,883 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 19:25:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:35,885 INFO L225 Difference]: With dead ends: 820 [2022-03-03 19:25:35,885 INFO L226 Difference]: Without dead ends: 805 [2022-03-03 19:25:35,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:35,885 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:35,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 313 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 537 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2022-03-03 19:25:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-03-03 19:25:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 740. [2022-03-03 19:25:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 3.2178619756427604) internal successors, (2378), 739 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2378 transitions. [2022-03-03 19:25:35,893 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2378 transitions. Word has length 20 [2022-03-03 19:25:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:35,893 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2378 transitions. [2022-03-03 19:25:35,893 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 19:25:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2378 transitions. [2022-03-03 19:25:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:35,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:35,894 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 19:25:35,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:36,099 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,SelfDestructingSolverStorable331 [2022-03-03 19:25:36,100 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 871715847, now seen corresponding path program 181 times [2022-03-03 19:25:36,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:36,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005243562] [2022-03-03 19:25:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:36,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:36,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005243562] [2022-03-03 19:25:36,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005243562] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:36,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963453461] [2022-03-03 19:25:36,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:25:36,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:36,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:36,272 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 19:25:36,273 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 19:25:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:36,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:36,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:36,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:36,740 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-03-03 19:25:37,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:37,626 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 133 [2022-03-03 19:25:37,627 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 133 treesize of output 115 [2022-03-03 19:25:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:37,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:38,141 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:38,141 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 103 treesize of output 95 [2022-03-03 19:25:38,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:38,463 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 118 treesize of output 108 [2022-03-03 19:25:38,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:38,468 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 100 treesize of output 90 [2022-03-03 19:25:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:38,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963453461] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:38,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:38,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:38,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368257714] [2022-03-03 19:25:38,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:38,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:38,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:38,574 INFO L87 Difference]: Start difference. First operand 740 states and 2378 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 19:25:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:39,140 INFO L93 Difference]: Finished difference Result 816 states and 2614 transitions. [2022-03-03 19:25:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:25:39,141 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 19:25:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:39,142 INFO L225 Difference]: With dead ends: 816 [2022-03-03 19:25:39,142 INFO L226 Difference]: Without dead ends: 809 [2022-03-03 19:25:39,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:39,143 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:39,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 360 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 509 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-03-03 19:25:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-03-03 19:25:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 741. [2022-03-03 19:25:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.2175675675675675) internal successors, (2381), 740 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2381 transitions. [2022-03-03 19:25:39,151 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2381 transitions. Word has length 20 [2022-03-03 19:25:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:39,151 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 2381 transitions. [2022-03-03 19:25:39,151 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 19:25:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2381 transitions. [2022-03-03 19:25:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:39,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:39,152 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 19:25:39,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:39,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:39,367 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1122749309, now seen corresponding path program 182 times [2022-03-03 19:25:39,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:39,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498678407] [2022-03-03 19:25:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:39,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:39,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498678407] [2022-03-03 19:25:39,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498678407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:39,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153629501] [2022-03-03 19:25:39,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:25:39,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:39,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:39,571 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 19:25:39,572 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 19:25:39,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:25:39,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:39,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:25:39,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:40,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:40,104 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-03-03 19:25:40,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:40,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 159 [2022-03-03 19:25:40,727 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 139 [2022-03-03 19:25:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:41,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:41,658 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:41,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-03-03 19:25:42,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:42,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:25:42,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:42,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:25:42,108 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 19:25:42,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153629501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:42,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:42,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:42,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715356819] [2022-03-03 19:25:42,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:42,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:42,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:42,109 INFO L87 Difference]: Start difference. First operand 741 states and 2381 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 19:25:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:42,535 INFO L93 Difference]: Finished difference Result 838 states and 2663 transitions. [2022-03-03 19:25:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:25:42,535 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 19:25:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:42,537 INFO L225 Difference]: With dead ends: 838 [2022-03-03 19:25:42,537 INFO L226 Difference]: Without dead ends: 823 [2022-03-03 19:25:42,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:25:42,537 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:42,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 176 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 263 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-03-03 19:25:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-03-03 19:25:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 741. [2022-03-03 19:25:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.2175675675675675) internal successors, (2381), 740 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2381 transitions. [2022-03-03 19:25:42,545 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2381 transitions. Word has length 20 [2022-03-03 19:25:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:42,545 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 2381 transitions. [2022-03-03 19:25:42,545 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 19:25:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2381 transitions. [2022-03-03 19:25:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:42,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:42,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:25:42,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2022-03-03 19:25:42,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2022-03-03 19:25:42,762 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1100152761, now seen corresponding path program 183 times [2022-03-03 19:25:42,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:42,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190935676] [2022-03-03 19:25:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:43,028 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 19:25:43,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:43,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190935676] [2022-03-03 19:25:43,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190935676] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:43,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799765196] [2022-03-03 19:25:43,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:25:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:43,030 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 19:25:43,030 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 19:25:43,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 19:25:43,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:43,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:25:43,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:43,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:43,596 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 96 [2022-03-03 19:25:44,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:44,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 176 [2022-03-03 19:25:44,486 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 150 [2022-03-03 19:25:45,156 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 19:25:45,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:45,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:45,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 126 [2022-03-03 19:25:46,124 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:46,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 106 [2022-03-03 19:25:46,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:46,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 88 [2022-03-03 19:25:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:46,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799765196] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:46,232 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:46,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:46,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394061483] [2022-03-03 19:25:46,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:46,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:46,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:46,233 INFO L87 Difference]: Start difference. First operand 741 states and 2381 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 19:25:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:47,774 INFO L93 Difference]: Finished difference Result 919 states and 2847 transitions. [2022-03-03 19:25:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 19:25:47,774 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 19:25:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:47,776 INFO L225 Difference]: With dead ends: 919 [2022-03-03 19:25:47,776 INFO L226 Difference]: Without dead ends: 889 [2022-03-03 19:25:47,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:25:47,776 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:47,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 468 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 742 Invalid, 0 Unknown, 345 Unchecked, 0.3s Time] [2022-03-03 19:25:47,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-03-03 19:25:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-03-03 19:25:47,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 3.2169811320754715) internal successors, (2387), 742 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 2387 transitions. [2022-03-03 19:25:47,786 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 2387 transitions. Word has length 20 [2022-03-03 19:25:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:47,786 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 2387 transitions. [2022-03-03 19:25:47,786 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 19:25:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 2387 transitions. [2022-03-03 19:25:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:47,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:47,787 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 19:25:47,803 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 19:25:48,003 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,SelfDestructingSolverStorable334 [2022-03-03 19:25:48,003 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1241576525, now seen corresponding path program 184 times [2022-03-03 19:25:48,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:48,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287580465] [2022-03-03 19:25:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:48,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:48,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287580465] [2022-03-03 19:25:48,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287580465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:48,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774810048] [2022-03-03 19:25:48,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:25:48,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:48,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:48,237 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 19:25:48,239 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 19:25:48,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:25:48,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:48,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:48,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:48,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:48,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 97 treesize of output 83 [2022-03-03 19:25:49,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:49,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 134 [2022-03-03 19:25:49,713 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 116 [2022-03-03 19:25:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:50,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:50,284 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:50,284 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:25:50,617 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:50,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-03-03 19:25:50,621 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:50,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 89 [2022-03-03 19:25:50,729 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 19:25:50,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774810048] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:50,729 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:50,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:50,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791084073] [2022-03-03 19:25:50,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:50,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:50,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:50,730 INFO L87 Difference]: Start difference. First operand 743 states and 2387 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 19:25:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:51,492 INFO L93 Difference]: Finished difference Result 822 states and 2627 transitions. [2022-03-03 19:25:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 19:25:51,492 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 19:25:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:51,494 INFO L225 Difference]: With dead ends: 822 [2022-03-03 19:25:51,494 INFO L226 Difference]: Without dead ends: 815 [2022-03-03 19:25:51,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 19:25:51,494 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 39 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:51,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 346 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 548 Invalid, 0 Unknown, 128 Unchecked, 0.2s Time] [2022-03-03 19:25:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-03-03 19:25:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 745. [2022-03-03 19:25:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 3.21505376344086) internal successors, (2392), 744 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 2392 transitions. [2022-03-03 19:25:51,502 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 2392 transitions. Word has length 20 [2022-03-03 19:25:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:51,502 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 2392 transitions. [2022-03-03 19:25:51,502 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 19:25:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 2392 transitions. [2022-03-03 19:25:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:51,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:51,503 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 19:25:51,521 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 19:25:51,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335,215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:51,719 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:51,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash -752888631, now seen corresponding path program 185 times [2022-03-03 19:25:51,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:51,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403409489] [2022-03-03 19:25:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:51,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:51,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:51,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403409489] [2022-03-03 19:25:51,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403409489] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:51,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926994559] [2022-03-03 19:25:51,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:25:51,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:51,877 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 19:25:51,878 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 19:25:51,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:25:51,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:51,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:51,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:52,151 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 93 treesize of output 79 [2022-03-03 19:25:52,359 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 143 [2022-03-03 19:25:52,360 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 143 treesize of output 125 [2022-03-03 19:25:52,883 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 19:25:52,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:53,092 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:53,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 112 [2022-03-03 19:25:53,459 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:25:53,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 88 [2022-03-03 19:25:53,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-03-03 19:25:53,487 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 19:25:53,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926994559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:53,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:53,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:25:53,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243937009] [2022-03-03 19:25:53,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:53,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:25:53,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:53,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:25:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:25:53,488 INFO L87 Difference]: Start difference. First operand 745 states and 2392 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 19:25:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:54,640 INFO L93 Difference]: Finished difference Result 994 states and 3079 transitions. [2022-03-03 19:25:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 19:25:54,641 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 19:25:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:54,642 INFO L225 Difference]: With dead ends: 994 [2022-03-03 19:25:54,642 INFO L226 Difference]: Without dead ends: 979 [2022-03-03 19:25:54,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:25:54,643 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 110 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:54,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 245 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:25:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-03-03 19:25:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 739. [2022-03-03 19:25:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 3.214092140921409) internal successors, (2372), 738 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 2372 transitions. [2022-03-03 19:25:54,652 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 2372 transitions. Word has length 20 [2022-03-03 19:25:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:54,653 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 2372 transitions. [2022-03-03 19:25:54,653 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 19:25:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 2372 transitions. [2022-03-03 19:25:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:54,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:54,654 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 19:25:54,670 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 19:25:54,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:54,859 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash -730292083, now seen corresponding path program 186 times [2022-03-03 19:25:54,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:54,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091804974] [2022-03-03 19:25:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:55,108 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 19:25:55,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:55,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091804974] [2022-03-03 19:25:55,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091804974] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:55,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120145062] [2022-03-03 19:25:55,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:25:55,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:55,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:55,110 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 19:25:55,111 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 19:25:55,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 19:25:55,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:25:55,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:55,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:55,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:55,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 95 treesize of output 81 [2022-03-03 19:25:55,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:55,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 149 [2022-03-03 19:25:55,901 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 131 [2022-03-03 19:25:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:25:56,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:25:56,635 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:56,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 120 [2022-03-03 19:25:56,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:56,930 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 119 treesize of output 109 [2022-03-03 19:25:56,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:25:56,935 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 91 [2022-03-03 19:25:57,027 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 19:25:57,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120145062] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:25:57,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:25:57,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:25:57,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33712879] [2022-03-03 19:25:57,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:25:57,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:25:57,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:25:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:25:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:25:57,028 INFO L87 Difference]: Start difference. First operand 739 states and 2372 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 19:25:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:25:58,299 INFO L93 Difference]: Finished difference Result 961 states and 2934 transitions. [2022-03-03 19:25:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:25:58,299 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 19:25:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:25:58,300 INFO L225 Difference]: With dead ends: 961 [2022-03-03 19:25:58,300 INFO L226 Difference]: Without dead ends: 908 [2022-03-03 19:25:58,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 19:25:58,301 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 153 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:25:58,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 467 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 603 Invalid, 0 Unknown, 449 Unchecked, 0.2s Time] [2022-03-03 19:25:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-03-03 19:25:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 742. [2022-03-03 19:25:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 3.215924426450742) internal successors, (2383), 741 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:25:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2383 transitions. [2022-03-03 19:25:58,310 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2383 transitions. Word has length 20 [2022-03-03 19:25:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:25:58,310 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 2383 transitions. [2022-03-03 19:25:58,310 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 19:25:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2383 transitions. [2022-03-03 19:25:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:25:58,311 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:25:58,311 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 19:25:58,326 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 19:25:58,523 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,SelfDestructingSolverStorable337 [2022-03-03 19:25:58,523 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:25:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:25:58,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1393282129, now seen corresponding path program 187 times [2022-03-03 19:25:58,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:25:58,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308035121] [2022-03-03 19:25:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:25:58,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:25:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:58,749 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 19:25:58,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:25:58,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308035121] [2022-03-03 19:25:58,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308035121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:25:58,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704827116] [2022-03-03 19:25:58,750 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:25:58,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:25:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:25:58,751 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 19:25:58,751 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 19:25:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:25:58,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:25:58,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:25:59,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:59,298 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 117 treesize of output 101 [2022-03-03 19:25:59,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:25:59,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:25:59,871 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 19:26:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:00,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:00,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:00,685 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 90 treesize of output 84 [2022-03-03 19:26:01,015 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:01,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:26:01,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:01,020 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-03-03 19:26:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:01,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704827116] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:01,118 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:01,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:01,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161192363] [2022-03-03 19:26:01,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:01,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:01,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:01,119 INFO L87 Difference]: Start difference. First operand 742 states and 2383 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 19:26:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:01,979 INFO L93 Difference]: Finished difference Result 943 states and 2909 transitions. [2022-03-03 19:26:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:26:01,979 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 19:26:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:01,981 INFO L225 Difference]: With dead ends: 943 [2022-03-03 19:26:01,981 INFO L226 Difference]: Without dead ends: 850 [2022-03-03 19:26:01,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:26:01,981 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 103 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:01,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 460 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 776 Invalid, 0 Unknown, 312 Unchecked, 0.3s Time] [2022-03-03 19:26:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-03-03 19:26:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 745. [2022-03-03 19:26:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 3.213709677419355) internal successors, (2391), 744 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 2391 transitions. [2022-03-03 19:26:01,989 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 2391 transitions. Word has length 20 [2022-03-03 19:26:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:01,989 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 2391 transitions. [2022-03-03 19:26:01,990 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 19:26:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 2391 transitions. [2022-03-03 19:26:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:01,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:01,991 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 19:26:02,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Ended with exit code 0 [2022-03-03 19:26:02,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable338 [2022-03-03 19:26:02,203 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1987333483, now seen corresponding path program 188 times [2022-03-03 19:26:02,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:02,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454268629] [2022-03-03 19:26:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:02,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:02,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:02,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454268629] [2022-03-03 19:26:02,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454268629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:02,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830449225] [2022-03-03 19:26:02,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:26:02,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:02,363 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 19:26:02,363 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 19:26:02,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:26:02,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:02,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:26:02,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:03,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:03,172 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-03-03 19:26:03,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:03,791 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 165 treesize of output 147 [2022-03-03 19:26:03,793 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 147 treesize of output 129 [2022-03-03 19:26:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:04,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:04,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:04,402 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-03-03 19:26:04,686 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:04,686 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 102 treesize of output 94 [2022-03-03 19:26:04,691 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:04,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:26:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:04,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830449225] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:04,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:04,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:04,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744043929] [2022-03-03 19:26:04,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:04,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:04,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:04,771 INFO L87 Difference]: Start difference. First operand 745 states and 2391 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 19:26:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:05,653 INFO L93 Difference]: Finished difference Result 955 states and 3080 transitions. [2022-03-03 19:26:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 19:26:05,653 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 19:26:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:05,655 INFO L225 Difference]: With dead ends: 955 [2022-03-03 19:26:05,655 INFO L226 Difference]: Without dead ends: 896 [2022-03-03 19:26:05,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:26:05,655 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 103 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:05,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 466 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 781 Invalid, 0 Unknown, 363 Unchecked, 0.3s Time] [2022-03-03 19:26:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-03-03 19:26:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 758. [2022-03-03 19:26:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.206076618229855) internal successors, (2427), 757 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2427 transitions. [2022-03-03 19:26:05,664 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2427 transitions. Word has length 20 [2022-03-03 19:26:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:05,664 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 2427 transitions. [2022-03-03 19:26:05,664 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 19:26:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2427 transitions. [2022-03-03 19:26:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:05,665 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:05,665 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 19:26:05,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:05,880 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,SelfDestructingSolverStorable339 [2022-03-03 19:26:05,881 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:05,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1334703191, now seen corresponding path program 189 times [2022-03-03 19:26:05,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:05,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506931082] [2022-03-03 19:26:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:06,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:06,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506931082] [2022-03-03 19:26:06,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506931082] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:06,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966756797] [2022-03-03 19:26:06,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:26:06,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:06,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:06,097 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 19:26:06,115 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 19:26:06,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 19:26:06,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:06,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:26:06,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:06,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:06,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 116 treesize of output 100 [2022-03-03 19:26:07,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:07,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 164 treesize of output 146 [2022-03-03 19:26:07,784 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 128 [2022-03-03 19:26:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:08,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:08,338 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:08,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:26:08,628 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:08,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:26:08,634 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:08,634 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-03-03 19:26:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:08,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966756797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:08,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:08,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:08,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782789839] [2022-03-03 19:26:08,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:08,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:08,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:08,714 INFO L87 Difference]: Start difference. First operand 758 states and 2427 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 19:26:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:09,319 INFO L93 Difference]: Finished difference Result 850 states and 2674 transitions. [2022-03-03 19:26:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:26:09,320 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 19:26:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:09,321 INFO L225 Difference]: With dead ends: 850 [2022-03-03 19:26:09,321 INFO L226 Difference]: Without dead ends: 814 [2022-03-03 19:26:09,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 19:26:09,322 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:09,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 383 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 570 Invalid, 0 Unknown, 175 Unchecked, 0.2s Time] [2022-03-03 19:26:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-03-03 19:26:09,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 756. [2022-03-03 19:26:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 3.209271523178808) internal successors, (2423), 755 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2423 transitions. [2022-03-03 19:26:09,330 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 2423 transitions. Word has length 20 [2022-03-03 19:26:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:09,330 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 2423 transitions. [2022-03-03 19:26:09,330 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 19:26:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 2423 transitions. [2022-03-03 19:26:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:09,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:09,331 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 19:26:09,346 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 19:26:09,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:09,547 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1010377549, now seen corresponding path program 190 times [2022-03-03 19:26:09,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:09,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543512212] [2022-03-03 19:26:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:09,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:09,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:09,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543512212] [2022-03-03 19:26:09,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543512212] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:09,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949847081] [2022-03-03 19:26:09,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:26:09,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:09,706 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 19:26:09,707 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 19:26:09,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:26:09,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:09,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:26:09,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:10,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:10,074 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-03-03 19:26:10,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:10,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 171 treesize of output 147 [2022-03-03 19:26:10,482 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 147 treesize of output 123 [2022-03-03 19:26:11,358 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 19:26:11,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:11,873 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:11,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:26:12,135 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:12,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-03-03 19:26:12,139 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:12,140 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 100 treesize of output 90 [2022-03-03 19:26:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:12,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949847081] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:12,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:12,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:12,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452774833] [2022-03-03 19:26:12,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:12,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:12,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:12,236 INFO L87 Difference]: Start difference. First operand 756 states and 2423 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 19:26:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:13,142 INFO L93 Difference]: Finished difference Result 938 states and 2928 transitions. [2022-03-03 19:26:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:26:13,142 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 19:26:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:13,144 INFO L225 Difference]: With dead ends: 938 [2022-03-03 19:26:13,144 INFO L226 Difference]: Without dead ends: 866 [2022-03-03 19:26:13,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 19:26:13,144 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 92 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:13,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 400 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 869 Invalid, 0 Unknown, 378 Unchecked, 0.3s Time] [2022-03-03 19:26:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-03-03 19:26:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 759. [2022-03-03 19:26:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 3.2189973614775726) internal successors, (2440), 758 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2440 transitions. [2022-03-03 19:26:13,154 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2440 transitions. Word has length 20 [2022-03-03 19:26:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:13,154 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 2440 transitions. [2022-03-03 19:26:13,154 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 19:26:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2440 transitions. [2022-03-03 19:26:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:13,155 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:13,155 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 19:26:13,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Forceful destruction successful, exit code 0 [2022-03-03 19:26:13,362 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,SelfDestructingSolverStorable341 [2022-03-03 19:26:13,362 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash -178241975, now seen corresponding path program 191 times [2022-03-03 19:26:13,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:13,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910962412] [2022-03-03 19:26:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:13,579 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 19:26:13,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:13,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910962412] [2022-03-03 19:26:13,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910962412] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:13,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119427201] [2022-03-03 19:26:13,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:26:13,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:13,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:13,580 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 19:26:13,581 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 19:26:13,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:26:13,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:13,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:26:13,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:13,804 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 101 treesize of output 85 [2022-03-03 19:26:14,077 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 165 treesize of output 141 [2022-03-03 19:26:14,079 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 19:26:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:15,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:15,993 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:15,993 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 155 treesize of output 143 [2022-03-03 19:26:16,277 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-03 19:26:16,277 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 106 treesize of output 91 [2022-03-03 19:26:16,279 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 88 treesize of output 70 [2022-03-03 19:26:16,306 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 19:26:16,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119427201] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:16,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:16,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:26:16,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073472026] [2022-03-03 19:26:16,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:16,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:26:16,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:26:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:26:16,307 INFO L87 Difference]: Start difference. First operand 759 states and 2440 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 19:26:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:18,491 INFO L93 Difference]: Finished difference Result 1215 states and 3633 transitions. [2022-03-03 19:26:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 19:26:18,491 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 19:26:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:18,493 INFO L225 Difference]: With dead ends: 1215 [2022-03-03 19:26:18,493 INFO L226 Difference]: Without dead ends: 1158 [2022-03-03 19:26:18,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:26:18,493 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 198 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:18,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 385 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:26:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-03-03 19:26:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 762. [2022-03-03 19:26:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 3.222076215505913) internal successors, (2452), 761 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 2452 transitions. [2022-03-03 19:26:18,504 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 2452 transitions. Word has length 20 [2022-03-03 19:26:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:18,504 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 2452 transitions. [2022-03-03 19:26:18,504 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 19:26:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2452 transitions. [2022-03-03 19:26:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:18,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:18,505 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 19:26:18,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Ended with exit code 0 [2022-03-03 19:26:18,721 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,SelfDestructingSolverStorable342 [2022-03-03 19:26:18,721 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:18,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2036253725, now seen corresponding path program 192 times [2022-03-03 19:26:18,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:18,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424378881] [2022-03-03 19:26:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:18,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:18,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424378881] [2022-03-03 19:26:18,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424378881] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:18,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823991777] [2022-03-03 19:26:18,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:26:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:18,934 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 19:26:18,934 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 19:26:18,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 19:26:18,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:26:18,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:26:18,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:19,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:19,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:26:20,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:20,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 175 treesize of output 151 [2022-03-03 19:26:20,282 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 151 treesize of output 127 [2022-03-03 19:26:21,180 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 19:26:21,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:26:21,452 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:21,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 19:26:21,667 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:21,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-03-03 19:26:21,673 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 19:26:21,673 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 86 treesize of output 78 [2022-03-03 19:26:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:26:21,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823991777] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:26:21,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:26:21,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:26:21,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675660372] [2022-03-03 19:26:21,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:26:21,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:26:21,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:26:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:26:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:26:21,778 INFO L87 Difference]: Start difference. First operand 762 states and 2452 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 19:26:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:26:22,691 INFO L93 Difference]: Finished difference Result 962 states and 2979 transitions. [2022-03-03 19:26:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 19:26:22,691 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 19:26:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:26:22,693 INFO L225 Difference]: With dead ends: 962 [2022-03-03 19:26:22,693 INFO L226 Difference]: Without dead ends: 869 [2022-03-03 19:26:22,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 19:26:22,693 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 134 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:26:22,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 312 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 570 Invalid, 0 Unknown, 239 Unchecked, 0.2s Time] [2022-03-03 19:26:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-03-03 19:26:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 764. [2022-03-03 19:26:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.2241153342070774) internal successors, (2460), 763 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:26:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2460 transitions. [2022-03-03 19:26:22,712 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2460 transitions. Word has length 20 [2022-03-03 19:26:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:26:22,712 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 2460 transitions. [2022-03-03 19:26:22,712 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 19:26:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2460 transitions. [2022-03-03 19:26:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:26:22,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:26:22,713 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 19:26:22,731 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 19:26:22,919 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,SelfDestructingSolverStorable343 [2022-03-03 19:26:22,919 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:26:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:26:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1481089495, now seen corresponding path program 193 times [2022-03-03 19:26:22,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:26:22,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007053655] [2022-03-03 19:26:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:26:22,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:26:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:23,133 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 19:26:23,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:26:23,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007053655] [2022-03-03 19:26:23,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007053655] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:26:23,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886890874] [2022-03-03 19:26:23,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:26:23,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:26:23,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:26:23,134 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 19:26:23,135 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 19:26:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:26:23,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:26:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:26:23,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:23,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 121 treesize of output 103 [2022-03-03 19:26:25,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 19:26:25,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19:26:25,159 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 177 treesize of output 147 Received shutdown request... [2022-03-03 19:26:25,805 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-03 19:26:25,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Ended with exit code 0 [2022-03-03 19:26:25,839 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:26:25,848 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 19:26:26,006 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,SelfDestructingSolverStorable344 [2022-03-03 19:26:26,006 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-1 context. [2022-03-03 19:26:26,008 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-03 19:26:26,008 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-03 19:26:26,008 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-03 19:26:26,015 INFO L732 BasicCegarLoop]: Path program histogram: [193, 90, 12, 12, 6, 6, 6, 6, 6, 4, 2, 2] [2022-03-03 19:26:26,017 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 19:26:26,017 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 19:26:26,018 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 07:26:26 BasicIcfg [2022-03-03 19:26:26,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 19:26:26,019 INFO L158 Benchmark]: Toolchain (without parser) took 880984.23ms. Allocated memory was 188.7MB in the beginning and 615.5MB in the end (delta: 426.8MB). Free memory was 147.8MB in the beginning and 238.9MB in the end (delta: -91.1MB). Peak memory consumption was 337.7MB. Max. memory is 8.0GB. [2022-03-03 19:26:26,019 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 188.7MB. Free memory was 149.2MB in the beginning and 149.1MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:26:26,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.21ms. Allocated memory is still 188.7MB. Free memory was 147.8MB in the beginning and 146.2MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-03 19:26:26,019 INFO L158 Benchmark]: Boogie Preprocessor took 12.63ms. Allocated memory is still 188.7MB. Free memory was 146.2MB in the beginning and 145.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:26:26,019 INFO L158 Benchmark]: RCFGBuilder took 290.28ms. Allocated memory is still 188.7MB. Free memory was 145.1MB in the beginning and 132.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-03 19:26:26,019 INFO L158 Benchmark]: TraceAbstraction took 880658.63ms. Allocated memory was 188.7MB in the beginning and 615.5MB in the end (delta: 426.8MB). Free memory was 131.9MB in the beginning and 238.9MB in the end (delta: -107.0MB). Peak memory consumption was 319.9MB. Max. memory is 8.0GB. [2022-03-03 19:26:26,019 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 0.10ms. Allocated memory is still 188.7MB. Free memory was 149.2MB in the beginning and 149.1MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.21ms. Allocated memory is still 188.7MB. Free memory was 147.8MB in the beginning and 146.2MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.63ms. Allocated memory is still 188.7MB. Free memory was 146.2MB in the beginning and 145.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 290.28ms. Allocated memory is still 188.7MB. Free memory was 145.1MB in the beginning and 132.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 880658.63ms. Allocated memory was 188.7MB in the beginning and 615.5MB in the end (delta: 426.8MB). Free memory was 131.9MB in the beginning and 238.9MB in the end (delta: -107.0MB). Peak memory consumption was 319.9MB. 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 analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-1 context. - 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 analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-1 context. - 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 analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-1 context. - 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 analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 880.6s, OverallIterations: 345, TraceHistogramMax: 1, PathProgramHistogramMax: 193, EmptinessCheckTime: 0.3s, AutomataDifference: 240.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32394 SdHoareTripleChecker+Valid, 61.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32394 mSDsluCounter, 85148 SdHoareTripleChecker+Invalid, 52.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 42798 IncrementalHoareTripleChecker+Unchecked, 152164 mSDsCounter, 4664 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156049 IncrementalHoareTripleChecker+Invalid, 203511 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4664 mSolverCounterUnsat, 7362 mSDtfsCounter, 156049 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14663 GetRequests, 5738 SyntacticMatches, 432 SemanticMatches, 8493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35081 ImplicationChecksByTransitivity, 282.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=764occurred in iteration=344, InterpolantAutomatonStates: 4124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 344 MinimizatonAttempts, 57145 StatesRemovedByMinimization, 343 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 578.3s InterpolantComputationTime, 10772 NumberOfCodeBlocks, 10772 NumberOfCodeBlocksAsserted, 744 NumberOfCheckSat, 14364 ConstructedInterpolants, 1197 QuantifiedInterpolants, 401338 SizeOfPredicates, 4720 NumberOfNonLiveVariables, 17502 ConjunctsInSsa, 4759 ConjunctsInUnsatCore, 788 InterpolantComputations, 136 PerfectInterpolantSequences, 14/1818 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